Custom Soil Resource Report for Polk and San Jacinto Counties, Texas

Transcription

1 United States Department of Agriculture Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Polk and San Jacinto Counties, Texas June 9, 2014

2 Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments ( nrcs/main/soils/health/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center ( offices.sc.egov.usda.gov/locator/app?agency=nrcs) or your NRCS State Soil Scientist ( cid=nrcs142p2_053951). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Web Soil Survey, the site for official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means 2

3 for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C or call (800) (voice) or (202) (TDD). USDA is an equal opportunity provider and employer. 3

4 Contents Preface...2 How Soil Surveys Are Made...6 Soil Map...8 Soil Map...9 Legend...10 Map Unit Legend...11 Map Unit Descriptions...12 Polk and San Jacinto Counties, Texas...14 BeB Bernaldo fine sandy loam, 0 to 3 percent...14 BnB Bienville loamy fine sand, 0 to 3 percent...15 BoB Boykin loamy fine sand, 1 to 5 percent...16 BuD Burkeville clay, 5 to 15 percent...17 CaB Choates loamy fine sand, 1 to 5 percent...18 CrB Conroe gravelly loamy fine sand, 1 to 5 percent...20 CrC Conroe gravelly loamy fine sand, 5 to 8 percent...21 DaA Kountze very fine sandy loam, 0 to 2 percent...22 DoB Doucette loamy fine sand, 1 to 5 percent...23 Hf Hatliff loam, frequently flooded...24 Ka Kaman clay, rarely flooded...25 Kf Kaman clay, frequently flooded...26 KvA Kirbyville fine sandy loam, 0 to 2 percent...27 LgB Leggett fine sandy loam, 0 to 3 percent...29 Na Nahatche fine sandy loam, rarely flooded...30 OtA Otanya very fine sandy loam, 1 to 3 percent...31 PaB Pinetucky loamy fine sand, 1 to 5 percent...32 PfB Pinetucky fine sandy loam, 1 to 5 percent...33 PGB Pinetucky and Conroe soils, graded...34 PK Pluck and Kian soils, frequently flooded...35 SoA Sorter-Dallardsville complex, 0 to 1 percent...37 SpA Splendora fine sandy loam, 0 to 2 percent...39 SrB Spurger fine sandy loam, 1 to 5 percent...40 SrD Spurger fine sandy loam, 5 to 15 percent...41 STE Stringtown-Bonwier association, strongly sloping...42 W Water...43 WaA Waller silt loam, 0 to 1 percent...44 WgB Wiergate clay, 1 to 5 percent...45 WgC Wiergate clay, 5 to 8 percent...46 WoB Woodville fine sandy loam, 1 to 5 percent...47 WoD Woodville fine sandy loam, 5 to 12 percent...48 Soil Information for All Uses...50 Suitabilities and Limitations for Use...50 Land Management...50 Erosion Hazard (Off-Road, Off-Trail) (San Jacinto County, TX)...50 Harvest Equipment Operability (San Jacinto County, TX)

5 References

6 How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the ; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the 6

7 individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soillandscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 7

8 Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 8

9 95 15' 27'' W Custom Soil Resource Report Soil Map 94 56' 20'' W 30 35' 42'' N ' 42'' N 30 24' 58'' N ' 58'' N 95 15' 27'' W N Map Scale: 1:140,000 if printed on A landscape (11" x 8.5") sheet. Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 20'' W

10 MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Unit Polygons Soil Map Unit Lines Soil Map Unit Points Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Polk and San Jacinto Counties, Texas Survey Area Data: Version 9, Dec 12, 2013 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Miscellaneous Water Perennial Water Date(s) aerial images were photographed: 26, 2011 Jan 26, 2011 May Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. Sinkhole Slide or Slip Sodic Spot 10

11 Map Unit Legend Polk and San Jacinto Counties, Texas (TX617) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI BeB Bernaldo fine sandy loam, 0 to 3 percent BnB Bienville loamy fine sand, 0 to 3 percent BoB Boykin loamy fine sand, 1 to 5 percent % 1, % 2, % BuD Burkeville clay, 5 to 15 percent CaB Choates loamy fine sand, 1 to 5 percent CrB CrC Conroe gravelly loamy fine sand, 1 to 5 percent Conroe gravelly loamy fine sand, 5 to 8 percent DaA Kountze very fine sandy loam, 0 to 2 percent DoB Doucette loamy fine sand, 1 to 5 percent % 3, % 1, % % 2, % 10, % Hf Hatliff loam, frequently flooded 1, % Ka Kaman clay, rarely flooded % Kf Kaman clay, frequently flooded % KvA Kirbyville fine sandy loam, 0 to 2 percent LgB Leggett fine sandy loam, 0 to 3 percent Na Nahatche fine sandy loam, rarely flooded OtA Otanya very fine sandy loam, 1 to 3 percent PaB Pinetucky loamy fine sand, 1 to 5 percent PfB Pinetucky fine sandy loam, 1 to 5 percent PGB PK Pinetucky and Conroe soils, graded Pluck and Kian soils, frequently flooded SoA Sorter-Dallardsville complex, 0 to 1 percent SpA Splendora fine sandy loam, 0 to 2 percent SrB Spurger fine sandy loam, 1 to 5 percent 5, % % % 5, % % 20, % % 12, % 6, % % % 11

12 Polk and San Jacinto Counties, Texas (TX617) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI SrD Spurger fine sandy loam, 5 to 15 percent % STE Stringtown-Bonwier association, strongly sloping 7, % W Water % WaA WgB WgC Waller silt loam, 0 to 1 percent Wiergate clay, 1 to 5 percent Wiergate clay, 5 to 8 percent WoB Woodville fine sandy loam, 1 to 5 percent WoD Woodville fine sandy loam, 5 to 12 percent 2, % % % 1, % 2, % Totals for Area of Interest 93, % Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially 12

13 where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 13

14 Polk and San Jacinto Counties, Texas BeB Bernaldo fine sandy loam, 0 to 3 percent Map Unit Elevation: 200 to 550 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 64 to 68 degrees F Frost-free period: 240 to 260 days Map Unit Composition Bernaldo and similar soils: 80 percent Minor components: 20 percent Description of Bernaldo Landform: Stream terraces Landform position (three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Loamy alluvium H1-0 to 6 inches: moderately acid, fine sandy loam H2-6 to 14 inches: moderately acid, very fine sandy loam H3-14 to 47 inches: strongly acid, clay loam H4-47 to 80 inches: strongly acid, loam Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 48 to 72 inches Frequency of flooding: None Available water storage in profile: High (about 9.3 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Ecological site: Quercus alba-pinus taeda/callicarpa americana/chasmanthium sessiliflorum (F133BY029TX) Minor Components Spurger Percent of map unit: 5 percent Kirbyville Percent of map unit: 3 percent Landform: Meander scrolls 14

15 Nahatche Percent of map unit: 3 percent Ecological site: Quercus phellos/justicia ovata (F133BY009TX) Pluck Percent of map unit: 3 percent Landform: Flood plains Kian Percent of map unit: 3 percent Landform: Flood plains Bienville Percent of map unit: 3 percent BnB Bienville loamy fine sand, 0 to 3 percent Map Unit Elevation: 10 to 550 feet Mean annual precipitation: 40 to 62 inches Mean annual air temperature: 61 to 70 degrees F Frost-free period: 220 to 300 days Map Unit Composition Bienville and similar soils: 70 percent Minor components: 30 percent Description of Bienville Landform: Stream terraces Landform position (three-dimensional): Tread Down-slope shape: Linear Across-slope shape: Linear Parent material: Sandy alluvium of late pleistocene age H1-0 to 7 inches: strongly acid, loamy fine sand H2-7 to 48 inches: strongly acid, loamy fine sand H3-48 to 72 inches: strongly acid, loamy fine sand Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat excessively drained Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) Depth to water table: About 48 to 72 inches Frequency of flooding: None Available water storage in profile: Moderate (about 6.0 inches) 15

16 Farmland classification: Not prime farmland Land capability classification (nonirrigated): 2s Hydrologic Soil Group: A Minor Components Bernaldo Percent of map unit: 10 percent Ecological site: Quercus alba-pinus taeda/callicarpa americana/chasmanthium sessiliflorum (F133BY029TX) Boykin Percent of map unit: 8 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Pinetucky Percent of map unit: 6 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Choates Percent of map unit: 6 percent BoB Boykin loamy fine sand, 1 to 5 percent Map Unit Elevation: 100 to 700 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Map Unit Composition Boykin and similar soils: 70 percent Minor components: 30 percent Description of Boykin Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 8 inches: strongly acid, loamy fine sand H2-8 to 24 inches: strongly acid, loamy fine sand H3-24 to 80 inches: strongly acid, sandy clay loam Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches 16

17 Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.3 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Betis Percent of map unit: 10 percent Choates Percent of map unit: 10 percent Doucette Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) BuD Burkeville clay, 5 to 15 percent Map Unit Elevation: 80 to 450 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 270 days Map Unit Composition Burkeville and similar soils: 60 percent Minor components: 40 percent Description of Burkeville Landform: Interfluves Down-slope shape: Linear Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 5 inches: moderately alkaline, clay H2-5 to 65 inches: moderately alkaline, clay 17

18 Slope: 5 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Calcium carbonate, maximum in profile: 10 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.6 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Minor Components Wiergate Percent of map unit: 20 percent Garner Percent of map unit: 15 percent Woodville Percent of map unit: 5 percent Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) CaB Choates loamy fine sand, 1 to 5 percent Map Unit Elevation: 100 to 300 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 260 days Map Unit Composition Choates and similar soils: 65 percent Minor components: 35 percent Description of Choates Landform: Interfluves Landform position (two-dimensional): Toeslope Down-slope shape: Concave Across-slope shape: Linear 18

19 Parent material: Loamy residuum H1-0 to 11 inches: moderately acid, loamy fine sand H2-11 to 24 inches: moderately acid, loamy fine sand H3-24 to 42 inches: very strongly acid, sandy clay loam H4-42 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: None Available water storage in profile: Moderate (about 7.4 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 3w Hydrologic Soil Group: A Minor Components Boykin Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Leggett Percent of map unit: 5 percent Dallardsville Percent of map unit: 5 percent Doucette Percent of map unit: 5 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Kian Percent of map unit: 3 percent Landform: Flood plains Kirbyville Percent of map unit: 3 percent Landform: Meander scrolls Pluck Percent of map unit: 2 percent Landform: Flood plains Pinetucky Percent of map unit: 2 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) 19

20 CrB Conroe gravelly loamy fine sand, 1 to 5 percent Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 283 days Map Unit Composition Conroe and similar soils: 80 percent Minor components: 20 percent Description of Conroe Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 25 inches: strongly acid, gravelly loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, sandy clay H4-78 to 80 inches: very strongly acid, sandy clay Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.2 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Minor Components Pinetucky Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) 20

21 Boykin Percent of map unit: 5 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Betis Percent of map unit: 5 percent CrC Conroe gravelly loamy fine sand, 5 to 8 percent Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 41 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 283 days Map Unit Composition Conroe and similar soils: 70 percent Minor components: 30 percent Description of Conroe Landform: Interfluves Down-slope shape: Linear Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 25 inches: strongly acid, gravelly loamy fine sand H2-25 to 31 inches: very strongly acid, sandy clay loam H3-31 to 78 inches: very strongly acid, sandy clay H4-78 to 80 inches: very strongly acid, sandy clay Slope: 5 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.2 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B 21

22 Minor Components Conroe, thick surface Percent of map unit: 20 percent Pinetucky Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) DaA Kountze very fine sandy loam, 0 to 2 percent Map Unit Elevation: 80 to 150 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 69 degrees F Frost-free period: 240 to 300 days Map Unit Composition Kountze and similar soils: 90 percent Minor components: 10 percent Description of Kountze Landform: Interfluves Landform position (three-dimensional): Rise Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy fluviomarine deposits A - 0 to 6 inches: strongly acid, very fine sandy loam E - 6 to 17 inches: very strongly acid, very fine sandy loam EB - 17 to 25 inches: very strongly acid, very fine sandy loam Bt/E - 25 to 54 inches: very strongly acid, loam Btv/E - 54 to 80 inches: extremely acid, loam Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 17 to 32 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.2 to 0.6 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: High (about 10.2 inches) 22

23 Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: B/D Minor Components Kirbyville Percent of map unit: 5 percent Landform: Interfluves Landform position (three-dimensional): Rise Down-slope shape: Linear Across-slope shape: Convex Sorter Percent of map unit: 3 percent Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear Waller Percent of map unit: 2 percent Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear DoB Doucette loamy fine sand, 1 to 5 percent Map Unit Elevation: 100 to 300 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 260 days Map Unit Composition Doucette and similar soils: 70 percent Minor components: 30 percent Description of Doucette Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 12 inches: moderately acid, loamy fine sand 23

24 H2-12 to 24 inches: moderately acid, loamy fine sand H3-24 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Moderate (about 6.3 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 3s Hydrologic Soil Group: B Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Boykin Percent of map unit: 10 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Choates Percent of map unit: 10 percent Pinetucky Percent of map unit: 5 percent Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Woodville Percent of map unit: 5 percent Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) Hf Hatliff loam, frequently flooded Map Unit Elevation: 50 to 230 feet Mean annual precipitation: 40 to 48 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 250 to 270 days Map Unit Composition Hatliff and similar soils: 85 percent Minor components: 15 percent 24

25 Description of Hatliff Landform: Flood plains Down-slope shape: Linear Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 10 inches: slightly acid, loam H2-10 to 26 inches: slightly acid, fine sandy loam H3-26 to 70 inches: slightly acid, loamy fine sand H4-70 to 80 inches: slightly acid, sand Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): High (1.98 to 5.95 in/hr) Depth to water table: About 0 to 24 inches Frequency of flooding: Frequent Available water storage in profile: Low (about 5.5 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A/D Minor Components Unnamed, minor components Percent of map unit: 10 percent Kaman Percent of map unit: 5 percent Landform: Flood plains Ka Kaman clay, rarely flooded Map Unit Elevation: 20 to 50 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 235 to 280 days Map Unit Composition Kaman and similar soils: 75 percent Minor components: 25 percent 25

26 Description of Kaman Landform: Flood plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Clayey alluvium of holocene age H1-0 to 5 inches: neutral, clay H2-5 to 39 inches: neutral, clay H3-39 to 70 inches: neutral, clay Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: Rare Calcium carbonate, maximum in profile: 10 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 6.0 Available water storage in profile: Moderate (about 7.8 inches) Farmland classification: Prime farmland if drained Land capability classification (nonirrigated): 2w Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 25 percent Kf Kaman clay, frequently flooded Map Unit Elevation: 20 to 50 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 235 to 280 days Map Unit Composition Kaman and similar soils: 90 percent Minor components: 10 percent 26

27 Description of Kaman Landform: Flood plains Down-slope shape: Linear Across-slope shape: Linear Parent material: Clayey alluvium of holocene age H1-0 to 5 inches: neutral, clay H2-5 to 39 inches: neutral, clay H3-39 to 70 inches: neutral, clay Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 18 to 30 inches Frequency of flooding: Frequent Calcium carbonate, maximum in profile: 10 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline to slightly saline (0.0 to 8.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 6.0 Available water storage in profile: Moderate (about 7.8 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 5w Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 10 percent KvA Kirbyville fine sandy loam, 0 to 2 percent Map Unit Elevation: 80 to 150 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 68 degrees F Frost-free period: 240 to 300 days Map Unit Composition Kirbyville and similar soils: 90 percent Minor components: 10 percent 27

28 Description of Kirbyville Landform: Interfluves Landform position (three-dimensional): Rise Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy fluviomarine deposits Ap - 0 to 6 inches: moderately acid, fine sandy loam Ep - 6 to 13 inches: strongly acid, fine sandy loam EB - 13 to 19 inches: strongly acid, fine sandy loam B/Etcv - 19 to 56 inches: strongly acid, loam B/Etgv - 56 to 80 inches: very strongly acid, sandy clay loam Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Low to moderately low (0.01 to 0.14 in/hr) Depth to water table: About 10 to 21 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: High (about 10.2 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: D Minor Components Niwana Percent of map unit: 5 percent Landform: Flats Landform position (three-dimensional): Rise Microfeatures of landform position: Pimple mounds Down-slope shape: Convex Across-slope shape: Convex Waller Percent of map unit: 5 percent Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear 28

29 LgB Leggett fine sandy loam, 0 to 3 percent Map Unit Elevation: 100 to 500 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 240 days Map Unit Composition Leggett and similar soils: 95 percent Minor components: 5 percent Description of Leggett Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 15 inches: strongly acid, fine sandy loam H2-15 to 40 inches: strongly acid, sandy clay loam H3-40 to 70 inches: strongly acid, sandy clay loam Slope: 0 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 6 to 18 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 3w Hydrologic Soil Group: B/D Minor Components Kian Percent of map unit: 5 percent Landform: Flood plains 29

30 Na Nahatche fine sandy loam, rarely flooded Map Unit Elevation: 100 to 400 feet Mean annual precipitation: 40 to 52 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 235 to 270 days Map Unit Composition Nahatche and similar soils: 80 percent Minor components: 20 percent Description of Nahatche Landform: Flood plains Down-slope shape: Linear Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 8 inches: neutral, fine sandy loam H2-8 to 29 inches: neutral, loam H3-29 to 80 inches: neutral, stratified loam to silty clay loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 6 to 18 inches Frequency of flooding: Rare Calcium carbonate, maximum in profile: 5 percent Gypsum, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 10.0 Available water storage in profile: High (about 9.0 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: B/D Ecological site: Quercus phellos/justicia ovata (F133BY009TX) 30

31 Minor Components Unnamed, minor components Percent of map unit: 20 percent OtA Otanya very fine sandy loam, 1 to 3 percent Map Unit Elevation: 80 to 150 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 69 degrees F Frost-free period: 240 to 300 days Map Unit Composition Otanya and similar soils: 89 percent Minor components: 11 percent Description of Otanya Landform: Interfluves Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy fluviomarine deposits Ap - 0 to 6 inches: strongly acid, very fine sandy loam Ep - 6 to 12 inches: very strongly acid, very fine sandy loam Bt - 19 to 28 inches: very strongly acid, very fine sandy loam Btc - 43 to 60 inches: very strongly acid, sandy clay loam B't - 60 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.14 to 1.42 in/hr) Depth to water table: About 54 to 60 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 0.6 mmhos/cm) Sodium adsorption ratio, maximum in profile: 2.0 Available water storage in profile: Moderate (about 6.4 inches) Farmland classification: All areas are prime farmland 31

32 Land capability classification (nonirrigated): 2e Hydrologic Soil Group: B Minor Components Kirbyville Percent of map unit: 10 percent Landform: Interfluves Landform position (three-dimensional): Rise Down-slope shape: Linear Across-slope shape: Convex Waller Percent of map unit: 1 percent Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear PaB Pinetucky loamy fine sand, 1 to 5 percent Map Unit Elevation: 100 to 250 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 250 days Map Unit Composition Pinetucky and similar soils: 80 percent Minor components: 20 percent Description of Pinetucky Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 13 inches: strongly acid, loamy fine sand H2-13 to 27 inches: very strongly acid, sandy clay loam H3-27 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches 32

33 Frequency of flooding: None Available water storage in profile: High (about 9.6 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Unnamed, minor components Percent of map unit: 20 percent PfB Pinetucky fine sandy loam, 1 to 5 percent Map Unit Elevation: 100 to 250 feet Mean annual precipitation: 45 to 60 inches Mean annual air temperature: 61 to 70 degrees F Frost-free period: 200 to 300 days Map Unit Composition Pinetucky and similar soils: 80 percent Minor components: 20 percent Description of Pinetucky Landform: Interfluves Landform position (two-dimensional): Shoulder Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy alluvium and/or marine deposits A - 0 to 13 inches: strongly acid, fine sandy loam Bt - 13 to 27 inches: very strongly acid, sandy clay loam Btv - 27 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None 33

34 Available water storage in profile: High (about 10.1 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Minor Components Unnamed, minor components Percent of map unit: 20 percent PGB Pinetucky and Conroe soils, graded Map Unit Elevation: 50 to 500 feet Mean annual precipitation: 40 to 58 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 285 days Map Unit Composition Pinetucky and similar soils: 50 percent Conroe and similar soils: 25 percent Minor components: 25 percent Description of Pinetucky Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 3 inches: strongly acid, fine sandy loam H2-3 to 27 inches: very strongly acid, sandy clay loam H3-27 to 80 inches: very strongly acid, sandy clay loam Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Available water storage in profile: High (about 10.6 inches) 34

35 Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: C Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Description of Conroe Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 5 inches: strongly acid, gravelly loamy fine sand H2-5 to 52 inches: very strongly acid, sandy clay H3-52 to 65 inches: very strongly acid, sandy clay Slope: 1 to 3 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 24 to 42 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: Low (about 5.4 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 25 percent PK Pluck and Kian soils, frequently flooded Map Unit Elevation: 50 to 400 feet Mean annual precipitation: 40 to 55 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 220 to 270 days 35

36 Map Unit Composition Pluck and similar soils: 45 percent Kian and similar soils: 30 percent Minor components: 25 percent Description of Pluck Landform: Flood plains Down-slope shape: Linear Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 6 inches: moderately acid, fine sandy loam H2-6 to 26 inches: slightly acid, fine sandy loam H3-26 to 35 inches: slightly acid, sandy clay loam H4-35 to 52 inches: slightly acid, sandy clay loam H5-52 to 65 inches: neutral, silty clay loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Available water storage in profile: Moderate (about 9.0 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 5w Hydrologic Soil Group: B/D Description of Kian Landform: Flood plains Down-slope shape: Linear Across-slope shape: Concave Parent material: Loamy alluvium of holocene age H1-0 to 4 inches: slightly acid, fine sandy loam H2-4 to 26 inches: slightly acid, fine sandy loam H3-26 to 52 inches: slightly acid, fine sandy loam H4-52 to 65 inches: neutral, clay loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 1.98 in/hr) 36

37 Depth to water table: About 0 to 18 inches Frequency of flooding: Frequent Available water storage in profile: Moderate (about 8.0 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 5w Hydrologic Soil Group: A/D Minor Components Unnamed, minor components Percent of map unit: 25 percent SoA Sorter-Dallardsville complex, 0 to 1 percent Map Unit Elevation: 80 to 150 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 69 degrees F Frost-free period: 240 to 300 days Map Unit Composition Sorter and similar soils: 65 percent Dallardsville and similar soils: 30 percent Minor components: 5 percent Description of Sorter Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear Parent material: Loamy fluviomarine deposits A - 0 to 3 inches: extremely acid, very fine sandy loam Bg - 3 to 24 inches: very strongly acid, very fine sandy loam B/Etg1-24 to 78 inches: very strongly acid, very fine sandy loam B/Etg2-78 to 80 inches: strongly acid, very fine sandy loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) 37

38 Depth to water table: About 0 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.3 to 1.0 mmhos/cm) Sodium adsorption ratio, maximum in profile: 13.0 Available water storage in profile: High (about 10.1 inches) Farmland classification: Prime farmland if drained Land capability classification (nonirrigated): 4w Hydrologic Soil Group: B/D Description of Dallardsville Landform: Flats Landform position (three-dimensional): Rise Microfeatures of landform position: Pimple mounds Down-slope shape: Convex Across-slope shape: Convex Parent material: Loamy fluviomarine deposits A - 0 to 7 inches: extremely acid, very fine sandy loam E - 7 to 21 inches: extremely acid, very fine sandy loam E/Bt - 21 to 38 inches: extremely acid, very fine sandy loam B/Et - 38 to 61 inches: extremely acid, very fine sandy loam B/Etx - 61 to 80 inches: extremely acid, very fine sandy loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 42 to 65 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 0.5 mmhos/cm) Sodium adsorption ratio, maximum in profile: 4.0 Available water storage in profile: Very high (about 13.8 inches) Farmland classification: Prime farmland if drained Land capability classification (nonirrigated): 2w Hydrologic Soil Group: C/D Minor Components Kirbyville Percent of map unit: 5 percent Landform: Interfluves Landform position (three-dimensional): Rise Down-slope shape: Linear Across-slope shape: Convex 38

39 SpA Splendora fine sandy loam, 0 to 2 percent Map Unit Elevation: 80 to 400 feet Mean annual precipitation: 48 to 58 inches Mean annual air temperature: 67 to 68 degrees F Frost-free period: 240 to 300 days Map Unit Composition Splendora and similar soils: 90 percent Minor components: 10 percent Description of Splendora Landform: Flatwoods Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy fluviomarine deposits of early pleistocene age A - 0 to 6 inches: very strongly acid, fine sandy loam E - 6 to 15 inches: strongly acid, fine sandy loam Bt/E - 15 to 28 inches: very strongly acid, loam Bt - 28 to 70 inches: very strongly acid, loam Btg - 70 to 80 inches: very strongly acid, sandy clay loam Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: About 10 to 32 inches Frequency of flooding: None Available water storage in profile: High (about 10.0 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 2w Hydrologic Soil Group: C/D Minor Components Waller Percent of map unit: 7 percent Landform: Flats 39

40 Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear Segno Percent of map unit: 3 percent Landform: Interfluves Landform position (two-dimensional): Backslope, shoulder Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Convex SrB Spurger fine sandy loam, 1 to 5 percent Map Unit Elevation: 20 to 200 feet Mean annual precipitation: 42 to 60 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Map Unit Composition Spurger and similar soils: 90 percent Minor components: 10 percent Description of Spurger Landform: Terraces Landform position (two-dimensional): Footslope Landform position (three-dimensional): Riser Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy alluvium of late pleistocene age H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 36 inches: strongly acid, clay H3-36 to 65 inches: strongly acid, clay loam H4-65 to 80 inches: strongly acid, sand Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 60 to 72 inches Frequency of flooding: None Available water storage in profile: Moderate (about 8.9 inches) 40

41 Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 3e Hydrologic Soil Group: C Minor Components Unnamed, minor components Percent of map unit: 10 percent SrD Spurger fine sandy loam, 5 to 15 percent Map Unit Elevation: 20 to 200 feet Mean annual precipitation: 42 to 60 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 230 to 260 days Map Unit Composition Spurger and similar soils: 90 percent Minor components: 10 percent Description of Spurger Landform: Terraces Landform position (two-dimensional): Footslope Landform position (three-dimensional): Riser Down-slope shape: Linear Across-slope shape: Convex Parent material: Loamy alluvium of late pleistocene age H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 36 inches: strongly acid, clay H3-36 to 65 inches: strongly acid, clay loam H4-65 to 80 inches: strongly acid, sand Slope: 5 to 15 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 60 to 72 inches Frequency of flooding: None Available water storage in profile: Moderate (about 8.9 inches) 41

42 Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: C Minor Components Unnamed, minor components Percent of map unit: 10 percent STE Stringtown-Bonwier association, strongly sloping Map Unit Elevation: 200 to 500 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 260 days Map Unit Composition Stringtown and similar soils: 40 percent Bonwier and similar soils: 30 percent Minor components: 30 percent Description of Stringtown Landform: Interfluves Down-slope shape: Linear Across-slope shape: Linear Parent material: Loamy residuum H1-0 to 11 inches: strongly acid, fine sandy loam H2-11 to 54 inches: strongly acid, sandy clay loam H3-54 to 80 inches:, variable Slope: 5 to 15 percent Depth to restrictive feature: 40 to 60 inches to densic material Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Available water storage in profile: High (about 9.2 inches) Farmland classification: Not prime farmland 42

43 Land capability classification (nonirrigated): 6e Hydrologic Soil Group: B Ecological site: Pinus palustris/schizachyrium scoparium (F133BY027TX) Description of Bonwier Landform: Interfluves Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Down-slope shape: Linear Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 33 inches: very strongly acid, sandy clay H3-33 to 60 inches:, variable Slope: 5 to 15 percent Depth to restrictive feature: 20 to 40 inches to paralithic bedrock Natural drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Available water storage in profile: Low (about 4.8 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: C Minor Components Unnamed, minor components Percent of map unit: 30 percent W Water Map Unit Composition Water: 100 percent 43

44 WaA Waller silt loam, 0 to 1 percent Map Unit Elevation: 20 to 400 feet Mean annual precipitation: 40 to 60 inches Mean annual air temperature: 64 to 70 degrees F Frost-free period: 245 to 285 days Map Unit Composition Waller and similar soils: 90 percent Minor components: 10 percent Description of Waller Landform: Flats Landform position (three-dimensional): Talf Down-slope shape: Linear Across-slope shape: Linear Parent material: Loamy fluviomarine deposits of early pleistocene age H1-0 to 4 inches: strongly acid, silt loam H2-4 to 34 inches: strongly acid, silt loam H3-34 to 80 inches: moderately acid, clay loam Slope: 0 to 1 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: About 0 to 30 inches Frequency of flooding: None Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 10.8 inches) Farmland classification: Prime farmland if drained Land capability classification (irrigated): 4w Land capability classification (nonirrigated): 4w Hydrologic Soil Group: C/D Minor Components Unnamed, minor components Percent of map unit: 10 percent 44

45 WgB Wiergate clay, 1 to 5 percent Map Unit Elevation: 300 to 450 feet Mean annual precipitation: 44 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 260 days Map Unit Composition Wiergate and similar soils: 85 percent Minor components: 15 percent Description of Wiergate Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Calcareous clayey residuum H1-0 to 21 inches: neutral, clay H2-21 to 75 inches: moderately alkaline, clay Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Calcium carbonate, maximum in profile: 10 percent Available water storage in profile: Moderate (about 7.8 inches) Farmland classification: All areas are prime farmland Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 15 percent 45

46 WgC Wiergate clay, 5 to 8 percent Map Unit Elevation: 300 to 450 feet Mean annual precipitation: 44 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 240 to 260 days Map Unit Composition Wiergate and similar soils: 85 percent Minor components: 15 percent Description of Wiergate Landform: Interfluves Down-slope shape: Linear Across-slope shape: Linear Parent material: Calcareous clayey residuum H1-0 to 21 inches: neutral, clay H2-21 to 75 inches: moderately alkaline, clay Slope: 5 to 8 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Calcium carbonate, maximum in profile: 10 percent Available water storage in profile: Moderate (about 7.8 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Minor Components Unnamed, minor components Percent of map unit: 15 percent 46

47 WoB Woodville fine sandy loam, 1 to 5 percent Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Map Unit Composition Woodville and similar soils: 80 percent Minor components: 20 percent Description of Woodville Landform: Interfluves Down-slope shape: Convex Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 65 inches: very strongly acid, clay H3-65 to 80 inches: neutral, clay Slope: 1 to 5 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 4e Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) Minor Components Unnamed, minor components Percent of map unit: 20 percent 47

48 WoD Woodville fine sandy loam, 5 to 12 percent Map Unit Elevation: 150 to 450 feet Mean annual precipitation: 46 to 58 inches Mean annual air temperature: 66 to 70 degrees F Frost-free period: 230 to 270 days Map Unit Composition Woodville and similar soils: 80 percent Minor components: 20 percent Description of Woodville Landform: Interfluves Down-slope shape: Linear Across-slope shape: Linear Parent material: Clayey residuum H1-0 to 9 inches: strongly acid, fine sandy loam H2-9 to 65 inches: very strongly acid, clay H3-65 to 80 inches: neutral, clay Slope: 5 to 12 percent Depth to restrictive feature: More than 80 inches Natural drainage class: Somewhat poorly drained Capacity of the most limiting layer to transmit water (Ksat): Very low to moderately low (0.00 to 0.06 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Calcium carbonate, maximum in profile: 2 percent Salinity, maximum in profile: Nonsaline (0.0 to 2.0 mmhos/cm) Available water storage in profile: High (about 9.1 inches) Farmland classification: Not prime farmland Land capability classification (nonirrigated): 6e Hydrologic Soil Group: D Ecological site: Pinus echinata-quercus stellata/callicarpa americana/ Chasmanthium sessiliflorum (F133BY025TX) Minor Components Unnamed, minor components Percent of map unit: 20 percent 48

49 49

50 Soil Information for All Uses Suitabilities and Limitations for Use The Suitabilities and Limitations for Use section includes various soil interpretations displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each interpretation. Land Management Land management interpretations are tools designed to guide the user in evaluating existing conditions in planning and predicting the soil response to various land management practices, for a variety of land uses, including cropland, forestland, hayland, pastureland, horticulture, and rangeland. Example interpretations include suitability for a variety of irrigation practices, log landings, haul roads and major skid trails, equipment operability, site preparation, suitability for hand and mechanical planting, potential erosion hazard associated with various practices, and ratings for fencing and waterline installation. Erosion Hazard (Off-Road, Off-Trail) (San Jacinto County, TX) The ratings in this interpretation indicate the hazard of soil loss from off-road and offtrail areas after disturbance activities that expose the soil surface. The ratings are based on slope and soil erosion factor K. The soil loss is caused by sheet or rill erosion in off-road or off-trail areas where 50 to 75 percent of the surface has been exposed by logging, grazing, mining, or other kinds of disturbance. The ratings are both verbal and numerical. The hazard is described as "slight," "moderate," "severe," or "very severe." A rating of "slight" indicates that erosion is unlikely under ordinary climatic conditions; "moderate" indicates that some erosion is likely and that erosion-control measures may be needed; "severe" indicates that erosion is very likely and that erosion-control measures, including revegetation of bare areas, are advised; and "very severe" indicates that significant erosion is expected, loss of soil productivity and off-site damage are likely, and erosion-control measures are costly and generally impractical. 50

51 Numerical ratings indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to They indicate gradations between the point at which a soil feature has the greatest negative impact on the specified aspect of forestland management (1.00) and the point at which the soil feature is not a limitation (0.00). The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen. An aggregated rating class is shown for each map unit. The components listed for each map unit are only those that have the same rating class as listed for the map unit. The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented. Other components with different ratings may be present in each map unit. The ratings for all components, regardless of the map unit aggregated rating, can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site. Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site. 51

52 ' 20'' W 95 15' 27'' W Custom Soil Resource Report Map Erosion Hazard (Off-Road, Off-Trail) (San Jacinto County, TX) 30 35' 42'' N ' 42'' N 30 24' 58'' N 30 24' 58'' N Map Scale: 1:140,000 if printed on A landscape (11" x 8.5") sheet. N Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 20'' W 95 15' 27'' W

53 MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Rating Polygons Very severe Severe Moderate Slight Not rated or not available Soil Rating Lines Very severe Severe Moderate Slight Not rated or not available Soil Rating Points Very severe Severe Moderate Slight Not rated or not available Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads Local Roads Background Aerial Photography The soil surveys that comprise your AOI were mapped at 1:24,000. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Polk and San Jacinto Counties, Texas Survey Area Data: Version 9, Dec 12, 2013 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: 26, 2011 Jan 26, 2011 May The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. 53

54 Tables Erosion Hazard (Off-Road, Off-Trail) (San Jacinto County, TX) Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Polk and San Jacinto Counties, Texas (TX617) Map unit symbol Map unit name Rating Component name (percent) BeB BnB BoB Bernaldo fine sandy loam, 0 to 3 percent Bienville loamy fine sand, 0 to 3 percent Boykin loamy fine sand, 1 to 5 percent BuD Burkeville clay, 5 to 15 percent CaB CrB CrC DaA DoB Hf Ka Kf KvA Choates loamy fine sand, 1 to 5 percent Conroe gravelly loamy fine sand, 1 to 5 percent Conroe gravelly loamy fine sand, 5 to 8 percent Kountze very fine sandy loam, 0 to 2 percent Doucette loamy fine sand, 1 to 5 percent Hatliff loam, frequently flooded Kaman clay, rarely flooded Kaman clay, frequently flooded Kirbyville fine sandy loam, 0 Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Bernaldo (80%) % Slight Bienville (70%) 1, % Bernaldo (10%) Slight Boykin (70%) 2, % Betis (10%) Choates (10%) Doucette (10%) Slight Burkeville (60%) % Wiergate (20%) Garner (15%) Slight Choates (65%) 3, % Boykin (10%) Slight Conroe (80%) 1, % Pinetucky (10%) Slight Conroe (70%) % Conroe, thick surface (20%) Pinetucky (10%) Slight Kountze (90%) 2, % Kirbyville (5%) Sorter (3%) Waller (2%) Slight Doucette (70%) 10, % Boykin (10%) Choates (10%) Slight Hatliff (85%) 1, % Slight Kaman (75%) % Slight Kaman (90%) % Slight Kirbyville (90%) 5, % 54

55 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Polk and San Jacinto Counties, Texas (TX617) Map unit symbol Map unit name Rating Component name (percent) LgB Na OtA PaB PfB PGB PK SoA SpA SrB SrD STE to 2 percent Leggett fine sandy loam, 0 to 3 percent Nahatche fine sandy loam, rarely flooded Otanya very fine sandy loam, 1 to 3 percent Pinetucky loamy fine sand, 1 to 5 percent Pinetucky fine sandy loam, 1 to 5 percent Pinetucky and Conroe soils, graded Pluck and Kian soils, frequently flooded Sorter- Dallardsville complex, 0 to 1 percent Splendora fine sandy loam, 0 to 2 percent Spurger fine sandy loam, 1 to 5 percent Spurger fine sandy loam, 5 to 15 percent Stringtown- Bonwier association, strongly sloping Waller (5%) Niwana (5%) Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Leggett (95%) % Slight Nahatche (80%) % Slight Otanya (89%) 5, % Kirbyville (10%) Waller (1%) Slight Pinetucky (80%) % Slight Pinetucky (80%) 20, % Slight Pinetucky (50%) % Conroe (25%) Slight Pluck (45%) 12, % Kian (30%) Slight Sorter (65%) 6, % Dallardsville (30%) Kirbyville (5%) Slight Splendora (90%) % Waller (7%) Segno (3%) Slight Spurger (90%) % Moderate Spurger (90%) Slope/erodibility % Slight Stringtown (40%) 7, % Bonwier (30%) W Water Not rated Water (100%) % WaA Waller silt loam, 0 to 1 percent Slight Waller (90%) 2, % 55

56 Erosion Hazard (Off-Road, Off-Trail) Summary by Map Unit Polk and San Jacinto Counties, Texas (TX617) Map unit symbol Map unit name Rating Component name (percent) WgB Wiergate clay, 1 to 5 percent WgC Wiergate clay, 5 to 8 percent WoB WoD Woodville fine sandy loam, 1 to 5 percent Woodville fine sandy loam, 5 to 12 percent Rating reasons (numeric values) Acres in AOI Percent of AOI Slight Wiergate (85%) % Slight Wiergate (85%) % Slight Woodville (80%) 1, % Slight Woodville (80%) 2, % Totals for Area of Interest 93, % Erosion Hazard (Off-Road, Off-Trail) Summary by Rating Value Rating Acres in AOI Percent of AOI Slight 92, % Moderate % Null or Not Rated % Totals for Area of Interest 93, % Rating Options Erosion Hazard (Off-Road, Off-Trail) (San Jacinto County, TX) Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Harvest Equipment Operability (San Jacinto County, TX) Ratings for this interpretation indicate the suitability for use of forestland harvesting equipment. The ratings are based on slope, rock fragments on the surface, plasticity index, content of sand, the Unified classification of the soil, depth to a water table, and ponding. Standard rubber-tire skidders and bulldozers are assumed to be used for ground-based harvesting and transport. The ratings are both verbal and numerical. Rating class terms indicate the degree to which the soils are suited to this aspect of forestland management. "Well suited" indicates that the soil has features that are favorable for the specified management aspect and has no limitations. Good performance can be expected, and little or no maintenance is needed. "Moderately suited" indicates that the soil has features that are moderately favorable for the specified management aspect. One or more soil properties are less than desirable, and fair performance can be expected. Some 56

57 maintenance is needed. "Poorly suited" indicates that the soil has one or more properties that are unfavorable for the specified management aspect. Overcoming the unfavorable properties requires special design, extra maintenance, and costly alteration. Numerical ratings indicate the severity of individual limitations. The ratings are shown as decimal fractions ranging from 0.01 to They indicate gradations between the point at which a soil feature has the greatest negative impact on the specified aspect of forestland management (1.00) and the point at which the soil feature is not a limitation (0.00). The map unit components listed for each map unit in the accompanying Summary by Map Unit table in Web Soil Survey or the Aggregation Report in Soil Data Viewer are determined by the aggregation method chosen. An aggregated rating class is shown for each map unit. The components listed for each map unit are only those that have the same rating class as listed for the map unit. The percent composition of each component in a particular map unit is presented to help the user better understand the percentage of each map unit that has the rating presented. Other components with different ratings may be present in each map unit. The ratings for all components, regardless of the map unit aggregated rating, can be viewed by generating the equivalent report from the Soil Reports tab in Web Soil Survey or from the Soil Data Mart site. Onsite investigation may be needed to validate these interpretations and to confirm the identity of the soil on a given site. 57

58 ' 20'' W 95 15' 27'' W Custom Soil Resource Report Map Harvest Equipment Operability (San Jacinto County, TX) 30 35' 42'' N ' 42'' N 30 24' 58'' N 30 24' 58'' N Map Scale: 1:140,000 if printed on A landscape (11" x 8.5") sheet. N Meters Feet Map projection: Web Mercator Corner coordinates: WGS84 Edge tics: UTM Zone 15N WGS ' 20'' W 95 15' 27'' W