SURVEY FOR SPECIAL-STATUS VASCULAR PLANT SPECIES

Transcription

1 SURVEY FOR SPECIAL-STATUS VASCULAR PLANT SPECIES For the Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Millville, Shasta County, California Prepared for: Tehama Environmental Solutions 910 Main Street, Suite D Red Bluff, California Prepared by: Dittes & Guardino Consulting P.O. Box 6 Los Molinos, California (530) jcdittes@sbcglobal.net Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 1

2 SURVEY FOR SPECIAL-STATUS VASCULAR PLANT SPECIES Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project, Shasta County, California T31N, R2W, portion of W 1/2 of Sec. 6; R3W, Sec. 1 of the Palo Cedro 7.5 USGS Topographic Quadrangle TABLE OF CONTENTS I. Executive Summary... 3 II. Introduction... 3 III. Project Description... 3 IV. Location... 3 V. Methods... 4 VI. Results: Setting, Habitats and Plant Species Encountered... 4 VII. Results: Special-Status Plant Species:... 8 VIII. Potential Impacts... 8 IX. Mitigation Measures... 9 X. References... 9 LIST OF APPENDICES Appendix-A. Table 1- Special-Status Plant Species with Potential to Occur in the Vicinity Appendix-B. Table 2- Vascular Plant Species Identified During 2012/2013 Field Surveys LIST OF FIGURES Figure 1- Site Vicinity Map Figure 2- Project Elements Map Figure 3- Site Topography and Survey Routes Figure 4- Major Vegetation Types/Biocommunities Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 2

3 I. Executive Summary A survey for special-status vascular plant species was conducted at the proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project area, northeast of Millville, Shasta County, California. The survey area (hereafter referred to as the Study Area) included all portions of the property subject to potential project impacts. No specialstatus plant species were encountered within the Study Area on the survey dates. Consequently, implementation of the proposed project will not result in significant impacts to special-status plant species. Mitigation measures for minimization of impacts to sensitive botanical resources (blue elderberry shrubs, oak woodland, mixed riparian woodland/scrub, seasonal-ephemeral drainages) are included. II. Introduction At the request of Tehama Environmental Solutions LLC, a survey for special-status vascular plant species was conducted within the approximately 65-acre study area for the proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project on June 11, 2012 and May 23, 2013 (Figures 1 and 2). The purpose of the botanical survey was to ascertain the potential presence of any special-status plant species, to characterize the vegetation and habitats, and to provide suggestions for appropriate mitigation measures for special-status botanical resources that may be present. III. Project Description The proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project entails the construction of a fish ladder on the existing concrete siphon on Clover Creek (at bridge crossing site); this is designated as a 1.5-acre construction area. Another fish ladder and fish screen will be constructed on the existing concrete diversion dam, located upstream from the bridge; this is designated as a 1.2-acre construction area. In addition, there are two designated staging areas, one being 0.9-acre and the other 0.4-acre in size. The project also includes a rock harvest area, comprising an additional 57 acres, as well as an approximately 200- foot reach of Clover Creek (downstream of existing road-ford) which will have spawning gravel added to the channel/bed for improvement of salmonid spawning habitat. In addition, various existing dirt access-roads are designated for potential improvements (re-grading). Project components and locations are illustrated in Figure-2. IV. Location The proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project is located approximately 1 air-mile northeast of the town of Millville in Shasta County, CA (T31N, R2W, portion of W 1/2 of Sec. 6; R3W, Sec. 1 of the Palo Cedro 7.5 USGS Topographic Quadrangle; see Figure 1). The westernmost boundary of the Study Area is located approximately 2.0 air-miles northeast of the intersection of State Hwy 44 and Old 44 Drive. The eastern-most point (existing upstream ford) is situated approximately 0.6 air-mile north-by-northwest of the intersection of Whitmore and Brookdale Roads. Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 3

4 V. Methods A preliminary investigation was performed that included a query of The California Native Plant Society s Inventory of Rare and Endangered Plants (CNPS 2013) for Shasta and Tehama Counties. The California Department of Fish and Game Natural Diversity Database was also queried for special-status plant species from the Enterprise and surrounding eight USGS 7.5 Topographic Quadrangles (Palo Cedro, Bella Vista, Oak Run, Clough gulch, Tuscan Buttes NE, Balls Ferry, Cottonwood, Enterprise, Project City; CDFG 2012, 2013). In addition, the Consortium of California Herbaria was queried for special-status species potentially recorded from the vicinity, but not included in the CNDDB ( A previous botanical investigation, conducted within a portion of the overall Study Area, was also reviewed (Castro 2007). The results of these database queries were used, along with consideration of site location and habitat, to compile a list of vascular plant species with potential to occur in the Study Area. This information is summarized in Table 1 (Appendix-A). Field surveys were conducted by John Dittes on June 11, 2012 and May 23, The survey was performed with aid of a boundary map on aerial photo-base. An intuitive-controlled survey was performed within the Study Area. All proposed construction, staging and gravel augmentation areas were completely surveyed where vegetation allowed access on foot. The stream channel, bed and banks were directly/completely inspected. In addition, all access roads were walked and the edges/margins inspected. The proposed rock-harvest area was intuitive-controlled surveyed with roughly parallel-meandering transects. Particular attention was paid to areas with thinner-rockier soils and seasonal/ephemeral drainages. All plant species encountered were identified to the taxonomic level necessary to determine legal status and scientific significance. Plants not readily identified in the field were collected and identified later in the lab. Scientific names follow Baldwin et al. (2012); common names follow Oswald (2002). Plant species encountered during the field surveys are listed in Table 2 (Appendix-B). VI. Results: Setting, Habitats and Plant Species Encountered a) Topography: The Study Area includes several reaches of the channel, beds and banks of Clover Creek, as well as the proposed Rock Harvest Area on the terrace, toe slope, slope and northeast-southwest trending ridge that parallels Clover Creek on its north side. Slopes range from nearly level on the ridge top, as well as on alluvial terrace areas between toe slopes and creek channel, to more than 100% along one reach of the easternmost access road (south side of Clover Creek) and along portions of the south-facing slope of the main northern ridge. Elevations range from 545 feet along Clover Creek (at downstream end of the gravel augmentation area) to 740 feet on the main ridge at the northernmost point of the project area (see Figure 3). b) Geology/Soils: The Study Area is situated on a mostly Tertiary-Age volcanic landform in the Cascade Range foothills near the eastern edge of the Northern Sacramento Valley. Substrates are derived from alluvium, weathered volcanic breccia and in areas, from weathered sedimentary rock. The predominant mapped soil associated with the main ridge top north of Clover Creek is Toomes Very Rocky Loam, 0-50% Slopes (TcE); associated slopes and toe slope areas are mapped as Newtown Stony Loam, 8-50% Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 4

5 Slopes (NfE2). Soils associated with lower elevation, mostly terrace settings include Tuscan Cobbly Loam, 3-8% Slopes (ThB), Inks-Pentz Complex, 5-30% Slopes (IeE), Honn Fine Sandy Loam, 0-3% Slopes (HgB), Kilarc Very Stony Sandy Clay Loam, 10-30% Slopes (KlE), Meyers Silty Clay, 0-3% Slopes (MrA), Sehorn Silty Clay, 3-8% Slopes (ScB), and Los Robles Loam, 0-3% Slopes (LcA). An area on the south side of Cow Creek, in the vicinity of one of the access roads is mapped as Rockland (Rxf); the corridor of Clover Creek itself is mapped as Cobbly Alluvial Land, Frequently Flooded (Ck). c) Hydrology: The principal hydrologic feature is the perennial drainage of Clover Creek, which passes in a southwesterly direction through the Study Area. The upstream-most point (ford above diversion dam) is at an elevation of 562 feet, the lowest-most point (downstream end of gravel augmentation area) is 545 feet; the grade through this reach is approximately 0.45%. Several seasonal drainages, indicated on the USGS Topographic map as blue-line features, are present. On passes southward into Clover Creek from the north side. The others are indicated as passing southwesterly on the south side of the creek. In addition, there are several other ephemeral stream-courses flowing southward into Clover Creek, draining from the south-facing slope of the main ridge. Two stockponds are present on the relatively level area between the main ridge and Clover Creek; these appear to be permanent, or at least of long duration, as reflected in support of emergent marsh species. d) Disturbances: Aside from use/maintenance of access roads, the only current disturbance within the Study Area is associated with livestock (cattle) grazing. Hoof-prints, chiseling trampling and cow-pies are apparent throughout the open rangeland on the north side of Clover Creek. The riparian corridor of Clover Creek is fenced; there are no livestock impacts there. There are numerous cut oak stumps, apparently resulting from past/ongoing firewood-cutting. e) Plant Communities: Vegetation in the Study Area was characterized by species composition and habitat association (see Figure 4). The predominant vegetation type is Annual Grassland. Mixed Oak Woodland and Blue Oak Woodland/Savannah occupy areas of the terraces and lower south-facing slope of the main ridge. Mixed Foothill Woodland occurs along the upper margins of the ridge top plateau, as well as the north aspect. Mixed Riparian Woodland/Scrub and Herbaceous Emergent Wetland are associated with the corridor of Clover Creek. Small areas of seasonal wetland vegetation are supported by some of the larger seasonal drainages/swales. Annual Grassland: This predominant plant community is dominated by mostly non-native annual grasses with scattered native and non-native forbs. Depending on the site it best corresponds to the Bromus (diandrus, hordeaceus)-brachypodium distachyon semi-natural stand, and the Lolium perenne semi-natural stand of Sawyer et al. (2009). Non-native annual grasses observed include Soft Chess (Bromus hordeaceus), Foxtail Chess (Bromus madritensis), Ripgut (Bromus diandrus), Slender Wild Oat (Avena barbata), Wild Rye (Festuca perennis), Silver European Hairgrass (Aira caryophyllea), Nitgrass (Gastridium ventricosum), Rattail Fescue (Festuca myuros), Medusa-Head (Elymus caput-medusa), Hedgehog Dogtail (Cynosurus echinatus) and Wall Barley (Hordeum murinum ssp. leporinum). Native grasses observed include Few-Flowered Fescue (Festuca microstachys) and in a few places in openings and at woodland edges, California Melic (Melica Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 5

6 californica). Frequently observed non-native forbs include Rose Clover (Trifolium hirtum), Common Bur-Clover (Medicago polymorpha), Grasspink (Petrorhagia dubia), Narrow- Leaved Filago (Filago gallica), Filarees (Erodium spp.), Yellow Star-Thistle (Centaurea solstitialis), Winter Vetch (Vicia villosa ssp. varia) and others. Native annual herbs frequently observed include Valley Popcorn-Flower (Plagiobothrys canescens), California Plantain (Plantago californica), Q-Tips (Micropus californicus), Small-Headed Clover (Trifolium microcephalum), Foothill Clover (T. ciliatum), Cowbag Clover (T. depauperatum), Bicolored Lupine (Lupinus bicolor), Marigold Navarretia (Navarretia tagetina), Sticky Navarretia (N. viscidula), Downy Navarretia (N. pubescens), Doveweed (Croton setigerus), Spanish Lotus (Acmispon americanus), Wrangel Lotus (Acmispon wrangelianus), Valley Tassels (Castilleja attenuata), Vinegar-Weed (Trichostemma lanceolatum), Fitch s Spikeweed (Centromadia fitchii), Rosinweed (Calycadenia truncata), and others. Frequently-observed native perennial herbs include California Brodiaea (Brodiaea californica), Harvest Brodiaea (B. coronaria), Narrow-Leaved Soaproot (Chlorogalum angustifolium) and Round-Toothed Ookow (Dichelostemma multiflorum). Valley Oak Woodland: A relatively small area of this type, comprised of Valley Oak (Quercus lobata) and scattered Blue Oak (Q. douglasii), dominates the relatively level deeper-soil alluvial terrace on the northeast portion of the Study Area. This corresponds best to the Valley Oak Woodland Alliance of Sawyer et al. (2009). The stands are mostly oldermature trees with little regeneration apparent; shrubs are mostly lacking. The understory and open areas are dominated by mostly non-native annual grasses and scattered native and nonnative forbs already mentioned. Blue Oak Woodland/Savannah: This woodland type dominates thinner, rocky substrates on the south-facing slope, toe slope and alluvial bench on the north side of Clover Creek. This corresponds closest to the Quercus douglasii Woodland Alliance of Sawyer et al. (2009). The dominant tree is Blue Oak (Q. douglasii), with occasional Foothill Pine (Pinus sabiniana) and Interior Live Oak (Q. wislizenii). Scattered shrubs include Sticky Manzanita (Arctostaphylos viscida), Big Manzanita (Arctostaphylos manzanita ssp. manzanita), Buckbrush (Ceanothus cuneatus) and occasional Poison Oak (Toxicodendron diversilobum). The understory and open areas are dominated by mostly non-native annual grasses and scattered native and non-native forbs. Mixed Foothill Woodland: This woodland type dominates the upper south-facing slope and north-facing slope of the main ridge on the north side of Clover Creek, as well as the slopes around the ridge on the south side of the creek, south and east of the bridge-crossing. This corresponds closest to the Quercus wislizenii Woodland Alliance of Sawyer et al. (2009). Species composition varies by site, but is generally comprised of a mostly closed canopy of trees, generally dominated by Interior Live Oak (Q. wislizenii) and a varied mix of Blue Oak (Q. douglasii), Foothill Pine (P. sabiniana) and in places Black Oak (Q. kelloggii). Several trees appearing to be Oracle Oak (Q. x morehus) were observed along the upper edge of the woodland on the north-aspect of the main ridge north of Clover Creek. The shrub component varies by site, but generally includes scattered Sticky Manzanita (Arctostaphylos viscida), Big Manzanita (Arctostaphylos manzanita ssp. manzanita), Buckbrush (Ceanothus cuneatus), Poison Oak (Toxicodendron diversilobum), Hoary Coffeeberry (Frangula Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 6

7 tomentella ssp. tomentella), and occasional California Buckeye (Aesculus californica) and CaliforniaYerba Santa (Eriodictyon californicum). In places where the tree canopy is densest, the herbaceous understory is depauperate. Elsewhere it is comprised of a varied mix of grasses, usually including non-native Hedgehog Dogtail (Cynosurus echinatus), Slender Wild Oat (Avena barbata), Bromes (Bromus spp.) and occasional native California Melic (Melica californica), Blue Wild Rye (Elymus glaucus) and Squirreltail (Elymus elymoides ssp. californicus). Chaparral Honeysuckle (Lonicera interrupta) is a frequent vine; California Grape (Vitis californica) was also observed. Native forbs observed include Purple Sanicle (Sanicula bipinnatifida), Wavy-Leaved Soaproot (Chlorogalum pomeridianum), Mexican Onion (Allium penninsulare var. penninsulare), California Goldenrod (Solidago velutina ssp. californica), Climbing Bedstraw (Galium porrigens var. tenue) and occasional Narrow- Leaved Mule s-ears (Wyethia angustifolia). Non-native Common Hedge Parsley (Torrilis arvensis ssp. arvensis) is a frequent component. Mixed Oak Woodland: This woodland type was mapped as a separate polygon on the north side of Clover Creek, on the alluvial terrace in the central portion of the study area. This woodland is comprised of Valley Oak with scattered Blue Oak. The herbaceous component is Annual Grassland; shrubs are mostly lacking. This corresponds best to the Valley Oak Woodland Alliance of Sawyer et al. (2009). Mixed Riparian Woodland/Scrub: This woodland type is associated with the banks and in places, adjacent low terrace along Clover Creek. Composition varies by location. Along the upper banks and immediately adjacent terrace, depending on site and scale of consideration, this type corresponds imperfectly to the Populus fremontii Forest Alliance and to the Alnus rhombifolia Woodland Alliance, and along immediate banks and where larger trees are lacking, to the Salix exigua and S. lasiolepis Shrubland Alliances of Sawyer et al. (2009). Trees observed include Fremont s Cottonwood (Populus fremontii), Oregon Ash (Fraxinus latifolia), White Alder (Alnus rhombifolia), Box Elder (Acer negundo), Valley Oak (Quercus lobata), Black Walnut (Juglans hindsii), and Black Willow (S. gooddingii). Shrubs and subshrubs include Sandbar Willow (Salix exigua), Arroyo Willow (S. lasiolepis), Shining Willow (S. lasiandra ssp. lucida), Red or Black Willow (S. laevigata or hindsii), occasional California Buckeye (Aesculus californica), Brown Dogwood (Cornus glabrata), Mulefat (Baccharis salicifolia), California Rose (Rosa californica) and California Brickllebush (Brickellia californica). Several Blue Elderberry (Sambucus nigra ssp. caerulea) bushes were encountered. Vines observed include California Grape (V. californica), California Pipevine (Aristolochia californica) and Virgin s Bower (Clematis ligusticifolia). Himalayan Blackberry (Rubus armeniacus) is abundant in places, particularly along the immediate bank. Herbaceous species observed include Blue Wild Rye (Elymus glaucus), Santa Barbara Sedge (Carex barbarae), Rosila (Helenium puberulum), Mint (Mentha sp.), Bird s-foot Trefoil (Lotus corniculatus), Western Goldenrod (Euthamia occidentalis), Mugwort (Artemisia douglasiana), Ryegrass (Lolium perennis), Bermudagrass (Cynodon dactylon), White Sweet- Clover (Melilotus albus) and Kentucky Bluegrass (Poa pratensis). Riparian Grassland: A few small areas of this type were mapped along the north side of Clover Creek, mostly on the north and south side of the Millville Ditch. This corresponds to the Elymus triticoides Herbland Alliance of Sawyer et al. (2009). Other species include Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 7

8 Annual Ryegrass (Festuca perennis), Meadow Fescue (Festuca arundinacea/pratensis), Blue Wild Rye (Elymus glaucus) and Intermediate Wheatgrass (Elymus hispidus). Drier areas support some of the grass species mentioned for the Annual Grassland type. Emergent Wetland: Small areas of Emergent Wetland are associated with margins of Clover Creek, and with the two stockponds. Depending on site, this vegetation corresponds to the Eleocharis macrostachya Herbland Alliance, Schoenoplectus acutus Herbland Alliance, and Carex nudata Herbland Alliance of Sawyer et al. (2009). In addition to these species, others near water s edge include Soft Rush (Juncus effusus), Ditch Beardgrass (Polypogon interruptus), Tall Cyperus (Cyperus eragrostis), Cocklebur (Xanthium strumarium), Rice Cutgrass (Leersia oryzoides) and Sticktight (Bidens frondosa). Seasonal Wetland: Small areas of Seasonal Wetland are associated with some of the larger seasonal/ephemeral drainages that drain southward towards Clover Creek from the main ridge. These areas were not mapped owing to scale and purpose of this survey/report. Another area of this type is located on the alluvial terrace near the barn, on the south side of Clover Creek in the northeastern-most portion of the study area. These potentially jurisdictional areas do not correspond well with any of the Alliances of Sawyer et al (2009). Dominant species include Annual Ryegrass (Festuca perennis) and Mediterranean Barley (Hordeum marinum ssp. gussoneanum). VII. Results: Special-Status Plant Species: The 2013 Online CNPS Inventory lists 176 special-status plant taxa for Shasta County (CNPS 2013). Some of these are currently listed, or are candidates for inclusion on state and federal lists. Several of these special-status species are known to occur in the general vicinity of the Project or have potentially suitable habitat present. Table 1 summarizes the results of the CNDDB, CNPS Inventory, and CSUC Herbarium database queries for sensitive plant species with geographic and elevation ranges that overlap with the Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Area. No special-status vascular plant species have been previously documented from the site as indicated by the database queries, and none were encountered during the 2012 and 2013 field surveys (see Table 2). Timing of the surveys was such that all potentially occurring species included in the database queries would have been identifiable at least to the level of genus (see Table 1), if present. No plant species were encountered that were not identifiable to the level necessary to make determination of significance. VIII. Potential Impacts Implementation of the proposed project will not result in direct or indirect impacts to any Special-Status Plant Species, since none were found during the 2012 and 2013 surveys, and the likelihood of their occurrence and chance they may have been missed is low (J. Dittes pers. obs.). Implementation of the proposed project may result in potential impacts to areas of Riparian Willow/Scrub Wetland, Mixed Riparian Woodland/Scrub Emergent Wetland and Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 8

9 Seasonal Wetland communities. Additional analysis of direct and indirect impacts to some of the in-stream project actions are described by Castro (2007).These sensitive habitat areas are potentially jurisdictional and under regulation of the United States Army Corp of Engineers (USCOE under authority of Section 404 of the Clean Water Act, and of California Department of Fish and Wildlife (CDFW) under Section 1600 of the Fish and Game Code. IX. Mitigation Measures a) Special-Status Plant Species: Since no Special-Status Plant Species were encountered during the 2012 and 2013 surveys and the likelihood of their presence is considered low (J. Dittes pers. obs.), specific avoidance/minimization mitigation measures are not necessary. b) Sensitive Habitats: Implementation of the Project may result in impacts to areas of potentially jurisdictional Riparian Willow/Scrub Wetland, Mixed Riparian Woodland/Scrub, Riparian Grassland, Seasonal Wetland communities and seasonal/permanent aquatic habitats. Direct and indirect impacts to these sensitive habitats should be avoided or minimized to the degree possible. Appropriate mitigation measures will be developed by Tehama Environmental Solutions (TES) during the permitting process and in consultation with lead agencies. X. References Baldwin, B.G. and D.H. Goldman, D.J. Keil, R. Patterson, T.J. Rosatti, D.H. Wilken (eds.) The Jepson Manual: Vascular Plants of California. University of California Press. Berkeley and Los Angeles, California California Department of Fish and Wildlife 2012, California Natural Diversity Database (CNDDB). California Native Plant Society. 2012, Inventory of Rare and Endangered Vascular Plants of California, 7th Edition. Sacramento CA. Castro, B Memorandum: Clover Creek Dam Removal-Botanical Investigation. State of California. Oswald, V Selected Plants of Northern California and Adjacent Nevada. Studies from the Herbarium. California State University, Chico. Sawyer, J.O., T. Keeler-Wolf and J. Evens A Manual of California Vegetation. 2 nd Edition. California Native Plant Society, In collaboration with California Department of Fish and Game. Sacramento, CA. Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Botany Report June, 2013 Prepared by: Dittes & Guardino Consulting 9

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13 Figure 4. Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Major Vegetation Types/Biocommunities Shasta County, CA " " " " " " " " " " " Miles Ü Legend Stockpond BioCommunities Developed Mixed Riparian Woodland/Scrub " Structures Vegetation Emergent Wetland Perennial Stream Roads Annual Grassland Hay Field Riparian Grassland Blue Oak Woodland/Savannah Mixed Foothill Woodland Valley Oak Woodland Chaparral Mixed Oak Woodland

14 Appendix-A; Table 1. Special-status Vascular Plant Species With Potential to Occur in Vicinity of Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project, Northeast of Millville, Shasta County, California; CNDDB and CNPS Query Conducted for Palo Cedro and Adjacent Eight USGS 7.5 Quadrangles, Shasta and Tehama Counties Common Name Scientific Name Henderson s Bentgrass Agrostis hendersonii Pointed Broomsedge Carex scoparia var. scoparia Pink Creamsacks Castilleja rubicundula ssp. rubicundula Shasta Clarkia Clarkia borealis ssp. arida Silky Cryptantha Cryptantha crinita Boggs Lake Hedge- Hyssop Gratiola heterosepala Red Bluff Dwarf Rush Juncus leiospermus var. leiospermus Legenere Legenere limosa Bellinger s Meadow Foam Limnanthes floccosa ssp. bellingeriana Wooly Meadowfoam Limnanthes floccosa ssp. floccosa Tehama Navarretia Navarretia heteranda Slender Orcutt Grass Orcuttia tenuis Ahart s Paronychia Paronychia ahartii Status* (CNPS) Geographic Range (CA Counties) 3.2 Butte?, Calaveras, Merced, Shasta, Tehama and Tuolumne Habitat (Elevation) Vernally mesic (70 to 305 m) 2.2 Plumas and Shasta Vernally mesic ( m) 1B.2 Butte, Contra Costa, Colusa, Glenn, Lake, Napa, Santa Clara, Shasta Serpentinite ( m) 1B.1 Shasta and Tehama Forest openings ( m) 1B.2 Shasta and Tehama Gravelly streambeds (61 to 1,215 m) 1B.2 CE Fresno, Lake, Lassen, Madera, Merced, Modoc, Placer, Sacramento, Shasta, Siskiyou, San Joaquin, Solano, Tehama; Oregon Vernally mesic; (10-2,375 m) 1B.1 Butte, Placer, Shasta and Tehama Vernally mesic (35 to 1,020 m) 1B.1 Alameda, Lake, Monterey, Napa, Placer, Sacramento, Santa Clara, Shasta, San Joaquin, San Mateo, Solano, Sonoma, Stanislaus*, Tehama, Yuba Vernally mesic (1-880 m) 1B.2 Shasta; OR Vernally mesic (290-1,100 m) 4.2 Butte, Lake, Napa, Shasta, Siskiyou, Tehama, and Trinity; Oregon. 4.3 Butte, Colusa, Lake, Shasta, 1B.1 SE,FT Vernally mesic (60 to 1,335 m) Tehama, Trinity and Yuba; Oregon (30 to 1,010 m) Butte, Lake, Lassen, Modoc, Plumas, Sacramento, Shasta, Siskiyou and Tehama Plant Community Association VFGrs, VnPls GBScr CmWld, Chprl, Medws, VFGrs CmWld, LMCFrs CmWld, LCFrs, RpFrs, RpWld and VFGrs MshSw(lake margin), VnPls/clay Chprl, CmWld, Medws, VFGrs and VnPls VFGrs, VnPls CmWld; Mdws (mesic) Chprl, CmWld, VFGrs and VnPls VFGrs and Flowering Period April-July VnPls * California Native Plant Society (CNPS) Status Codes: List 1B = Rare, Threatened, or Endangered in CA and elsewhere List 2 = Rare, Threatened or Endangered in CA but more common elsewhere. Threat ranks: 0.1 = high; 0.2 = moderate; 0.3 = low Agency Listing Codes: CE = State Endangered; FT = Federally Threatened Plant Community Association Codes: Chrpl = Chaparral; CmWld = Cis Montane Woodland; GBScr = Great Basin Scrub; LMCfrs= Lower Montane Coniferous Forest; NJW = Northern Juniper Woodland; MCF = Mixed Conifer Forest; Mdws = Meadows; MshSw = Marshes and Swamps; NCCF = Northern Coastal Conifer Forest; NCS = Northern Coastal Scrub; UCfrs= Upper Montane Coniferous Forest; YPF = Yellow Pine Forest May April-June April-May April-Aug March-May April-June April-June March-June April-June VnPls (35-1,760 m ) VnPls May- October 1B.1 Butte, Shasta and Tehama (30 and 510 m) CmWld, VFGrs and February- June

15 Appendix B-Table 2. Plant Species Observed within the Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Study Area, Shasta County, CA Acer negundo N Box-elder Sapindaceae Achyrachaena mollis N Blow-wives Asteraceae Acmispon brachycarpus N Foothill Lotus Fabaceae Acmispon micranthus N Small-flowered Lotus Fabaceae Acmispon americanus var. americanus N Spanish Lotus Fabaceae Acmispon wrangelianus N Wrangel Lotus Fabaceae Aegilops triuncialis I Barbed Goatgrass Poaceae Aesculus californica N California Buckeye Sapindaceae Agoseris heterophylla N Annual Agoseris Asteraceae Agrostis stolonifera I Creeping Bentgrass Poaceae Aira caryophyllea I Silver European Hairgrass Poaceae Allium amplectens N Clasping Onion Alliaceae Allium peninsulare var. peninsulare N Mexican Onion Alliaceae Alnus rhombifolia N White Alder Betulaceae Amaranthus albus I Tumbleweed Amaranthaceae Amsinckia intermedia N Common Fiddleneck Boraginaceae Amsinckia menziesii N Menzies' Fiddleneck Boraginaceae Anagallis arvensis I Scarlet Pimpernel Myrsinaceae Arctostaphylos manzanita ssp. manzanita N Big Manzanita Ericaceae Arctostaphylos viscida ssp. viscida N White-leaved Manzanita Ericaceae Aristida oligantha N Oldfield Three-awn Poaceae Aristolochia californica N California Pipevine Aristolochiaceae Artemisia douglasiana N Mugwort Asteraceae Asclepias fascicularis N Narrow-leaved Milkweed Apocynaceae Astragalus gambelianus N Gambel's Milk-vetch Fabaceae Athysanus pusillus N Petty Athysanus Brassicaceae Avena barbata I Slender Wild Oat Poaceae Avena fatua I Wild Oat Poaceae Baccharis salicifolia N Mule's-fat Asteraceae Bidens frondosa N Sticktight Asteraceae Brickellia californica N California Brickellbush Asteraceae Briza minor I Lesser Quaking-grass Poaceae Brodiaea californica N California Brodiaea Themidaceae Brodiaea coronaria N Harvest Brodiaea Themidaceae Brodiaea elegans ssp. elegans N Elegant Brodiaea Themidaceae Bromus diandrus I Ripgut Brome Poaceae Bromus hordeaceus I Soft Chess Poaceae Bromus madritensis ssp. madritensis I Foxtail Chess Poaceae Bromus madritensis ssp. rubens I Red Brome Poaceae Bromus tectorum I Cheat Grass, Downy Brome Poaceae Calycadenia fremontii N Fremont's Calycadenia Asteraceae Calycadenia truncata N Rosinweed Asteraceae Capsella bursa-pastoris I Shepherds's-purse Brassicaceae Cardamine oligosperma N Western Bittercress Brassicaceae Carex barbarae N Santa Barbara Sedge Cyperaceae Carex nudata N Torrent Sedge Cyperaceae Castilleja attenuata N Valley Tassel Orobanchaceae Ceanothus cuneatus var. cuneatus N Buckbrush Rhamnaceae Centaurea solstitialis I Yellow Starthistle Asteraceae Centromadia fitchii N Fitch's Spikeweed Asteraceae Cerastium glomeratum I Sticky Mouse-eared Chickweed Caryophyllaceae Chamaemelum fuscatum I Dusky Dog-fennel Asteraceae Chamaesyce ocellata ssp. ocellata N Valley Spurge Euphorbiaceae Chamaesyce serpyllifolia ssp. serpyllifolia N Thyme-leaved Spurge Euphorbiaceae Chenopodium album I Lamb's Quarters Chenopodiaceae Chlorogalum angustifolium N Narrow-leaved Soap-plant Agavaceae Chlorogalum pomeridianum var. pomeridianum N Wavy-leaved soap-plant Agavaceae Chorizanthe membranacea N Pink Spineflower Polygonaceae Chorizanthe polygonoides var. polygonoides N Knotweed Spineflower Polygonaceae Cichorium intybus I Chicory Asteraceae Clarkia purpurea ssp. quadrivulnera N Purple Clarkia Onagraceae Clematis ligusticifolia N Virgin's-bower Ranunculaceae Convolvulus arvensis I Bindweed Convolvulaceae Cornus glabrata N Brown Dogwood Cornaceae Crassula tillaea I Mossy Pigmyweed Crassulaceae Croton setigerus N Turkey-mullein Euphorbiaceae Crucianella angustifolia I Crosswort Rubiaceae Crypsis schoenoides I Swamp Grass Poaceae Cynodon dactylon I Bermuda Grass Poaceae Cynosurus echinatus I Hedgehog Dogtail Poaceae Cyperus eragrostis N Tall Cyperus Cyperaceae Daucus pusillus N Rattlesnake-weed Apiaceae Delphinium variegatum ssp. variegatum N Royal Larkspur Ranunculaceae Deschampsia danthonioides N Annual Hairgrass Poaceae Dichelostemma multiflorum N Round-toothed Ookow Themidaceae Dittes and Guardino Consulting Page 1

16 Appendix B-Table 2. Plant Species Observed within the Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Study Area, Shasta County, CA Dodecatheon clevelandii ssp. patulum N Lowland Shootingstar Primulaceae Draba verna N Spring Whitlow Grass Brassicaceae Elatine sp. N Waterwort Elatinaceae Eleocharis macrostachya N Pale Spike-rush Cyperaceae Eleocharis quinqueflora N Few-flowered Spike-rush Cyperaceae Elymus elymoides ssp. californicus N Squirreltail Poaceae Elymus glaucus ssp. glaucus N Blue Wild-rye Poaceae Elymus hispidus I Intermediate Wheatgrass Poaceae Elymus triticoides N Alkali Ryegrass Poaceae Elymus caput-medusae I Medusa-head Poaceae Epilobium brachycarpum N Tall Annual Willowherb Onagraceae Epilobium cleistogamum N Cleistogamous Spike-primrose Onagraceae Epilobium torreyi N Torrey's Spike-primrose Onagraceae Eriodictyon californicum N California Yerba-santa Boraginaceae Erodium botrys I Long-beaked Stork's-bill Geraniaceae Erodium brachycarpum I Short-fruited Stork's-bill Geraniaceae Erodium cicutarium I Red-stemmed Filaree Geraniaceae Eryngium articulatum N Bee-thistle Apiaceae Euthamia occidentalis N Western Goldenrod Asteraceae Festuca arundinacea/pratensis I Meadow Fescue Poaceae Festuca perennis I Annual Ryegrass Poaceae Festuca bromoides I Brome Fescue Poaceae Festuca microstachys N Small Fescue Poaceae Festuca myuros I Rattail Sixweeks Grass Poaceae Frangula californica ssp. tomentella N Hoary Coffeeberry Rhamnaceae Fraxinus latifolia N Oregon Ash Oleaceae Galium aparine N Cleavers Rubiaceae Galium parisiense I Wall Bedstraw Rubiaceae Galium porrigens var. tenue N Narrow-leaved Climbing Bedstraw Rubiaceae Gastridium phleoides I Nitgrass Poaceae Gnaphalium palustre N Western Cudweed Asteraceae Helenium puberulum N Rosilla Asteraceae Hirschfeldia incana I Mediterranean Hoary-mustard Brassicaceae Holcus lanatus I Common Velvetgrass Poaceae Hordeum marinum ssp. gussoneanum I Mediterranean Barley Poaceae Hordeum murinum ssp. leporinum I Hare Wall Barley Poaceae Hypericum perforatum I Klamathweed Hypericaceae Hypochaeris glabra I Smooth Cat's-ear Asteraceae Juglans hindsii N Northern California Black Walnut Juglandaceae Juncus bufonius var. bufonius N Common Toad Rush Juncaceae Juncus bufonius var. occidentalis N Round-fruited Toad Rush Juncaceae Juncus effusus ssp. pacificus N Pacific Rush Juncaceae Juncus exiguus N Weak Rush Juncaceae Lactuca serriola I Prickly Lettuce Asteraceae Lamium amplexicaule I Giraffehead Lamiaceae Lasthenia californica N California Goldfields Asteraceae Lathyrus angulatus I Angular-seeded Pea Fabaceae Layia fremontii N Fremont's Tidytips Asteraceae Leersia oryzoides N Rice Cutgrass Poaceae Lemna sp. N Duckweed Araceae Leontodon saxatillis I Long-beaked Hawkbit Asteraceae Lepidium nitidum N Shiny Pepper-grass Brassicaceae Lepidium strictum N Upright Pepper-grass Brassicaceae Leptosiphon ciliatus N Whiskerbrush Polemoniaceae Logfia gallica N Narrow-leaved Filago Asteraceae Lomatium marginatum var. marginatum N Margined Lomatium Apiaceae Lonicera interrupta N Chaparral Honeysuckle Caprifoliaceae Lotus corniculatus I Bird's-foot Trefoil Fabaceae Lupinus bicolor N Bicolored Lupine Fabaceae Lupinus nanus N Valley Sky Lupine Fabaceae Lythrum hyssopifolium I Hyssop Loosestrife Lythraceae Maclura pomifera I Mock Orange Moraceae Madia subspicata N Spiked Tarweed Asteraceae Malva parviflora I Little Mallow Malvaceae Matricaria discoidea I Common Pineapple-weed Asteraceae Medicago polymorpha I California or Common Bur-clover Fabaceae Melica californica N California Melic Poaceae Melilotus albus I White Sweet-clover Fabaceae Mentha sp. I Mint Lamiaceae Micropus californicus var. californicus N Slender Cottonweed Asteraceae Minuartia californica/cismontana Sandwort (dried) Caryophyllaceae Monardella sheltonii N Shelton's Coyote-mint Lamiaceae Morus alba I White Mulberry Moraceae Navarretia divaricata ssp. vividior N Spreading Navarretia Polemoniaceae Navarretia intertexta ssp. intertexta N Needle-leaved Navarretia Polemoniaceae Dittes and Guardino Consulting Page 2

17 Appendix B-Table 2. Plant Species Observed within the Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Study Area, Shasta County, CA Navarretia pubescens N Downy Navarretia Polemoniaceae Navarretia tagetina N Marigold Navarretia Polemoniaceae Navarretia viscidula N Sticky Navarretia Polemoniaceae Odontostomum hartwegii N Hartweg's Odontostomum Tecophilaeceae Panicum sp. I Panicgrass Poaceae Persicaria maculosa I Lady's Thumb Polygonaceae Petrorhagia dubia I Grass Pink Caryophyllaceae Phleum pratense I Cultivated Timothy Poaceae Philadelphus lewisii N Mock Orange Hydrangeaceae Pinus sabiniana N Gray Pine Pinaceae Plagiobothrys canescens N Valley Popcorn-flower Boraginaceae Plagiobothrys fulvus var. campestris N Fulvous Popcorn-flower Boraginaceae Plagiobothrys nothofulvus N Common Popcorn-flower Boraginaceae Plagiobothrys stipitatus var. micranthus N Small-flowered Popcorn-flower Boraginaceae Plantago erecta N Erect Plantain Plantaginaceae Plantago lanceolata I English Plantain Plantaginaceae Poa annua I Annual Bluegrass Poaceae Poa pratensis ssp. pratensis I Kentucky Bluegrass Poaceae Poa secunda ssp. secunda N One-sided Bluegrass Poaceae Polygonum aviculare ssp. depressum I Common Knotweed Polygonaceae Polygonum californicum N California Knotweed Polygonaceae Polygonum parryi N Parry's Knotweed Polygonaceae Polypogon interruptus I Ditch Beard Grass Poaceae Polypogon monspeliensis I Annual Beard Grass Poaceae Populus fremontii ssp. fremontii N Fremont's Cottonwood Salicaceae Potamogeton sp. N Pondweed Potamogetonaceae Prunus cerasifera I Cherry Plum Rosaceae Psilocarphus oregonus N Oregon Woolly-marbles Asteraceae Quercus douglasii N Blue Oak Fagaceae Quercus kelloggii N California Black Oak Fagaceae Quercus lobata N Valley Oak Fagaceae Quercus morehus N Oracle Oak Fagaceae Quercus wislizenii var. wislizeni N Interior Live Oak Fagaceae Ranunculus aquatilis var. aquatilis N Broad-leaved Water Buttercup Ranunculaceae Ranunculus sp. N Buttercup (dried) Ranunculaceae Rhamnus tomentella ssp. tomentella N Hoary Coffeeberry Rhamnaceae Rhus aromatica N Skunkbrush Anacardiaceae Rosa californica N California Rose Rosaceae Rubus armeniacus I Himalayan Blackberry Rosaceae Rumex pulcher I Fiddle Dock Polygonaceae Rumex crispus I Curly Dock Polygonaceae Salix exigua N Sandbar Willow Salicaceae Salix gooddingii N Black Willow Salicaceae Salix laevigata N Red Willow Salicaceae Salix lasiandra ssp. lucida N Shining Willow Salicaceae Salix lasiolepis N Arroyo Willow Salicaceae Sambucus nigra ssp. caerulea N Blue Elderberry Apoxaceae Sanicula bipinnatifida N Purple Sanicle Apiaceae Schoenoplectus acutus var. occidentalis N Hard-stemmed Tule Cyperaceae Scleranthus annuus ssp. annuus I Knawel Caryophyllaceae Selaginella hansenii N Hansen's Spike-moss Selaginellaceae Sidalcea hartwegii N Hartweg's Checkerbloom Malvaceae Silene gallica I Windmill-pink Caryophyllaceae Silybum marianum I Milk-thistle Asteraceae Solidaga velutine ssp. californica N California Goldenrod Asteraceae Sonchus asper ssp. asper I Prickly Sow Thistle Asteraceae Sorghum halepense I Johnsongrass Poaceae Spergularia bocconei I Baccone's Sandspurry Caryophyllaceae Symphoricarpos albus var. laevigatus N Common Snowberry Caprifoliaceae Thysanocarpus curvipes var. elegans N Elegant Fringepod Brassicaceae Torilis arvensis I Tall Sock-Destroyer Apiaceae Toxicodendron diversilobum N Western Poison-oak Anacardiaceae Trichostema lanceolatum N Vinegar-weed Lamiaceae Trifolium ciliolatum N Foothill Clover Fabaceae Trifolium depauperatum? N Cowbag Clover Fabaceae Trifolium dubium I Little Hop Clover Fabaceae Trifolium glomeratum I Sessile-headed Clover Fabaceae Trifolium hirtum I Rose Clover Fabaceae Trifolium microcephalum N Small-headed Clover Fabaceae Trifolium variegatum N White-tipped Clover Fabaceae Triphysaria eriantha ssp. eriantha N Johnnytuck Orobanchaceae Ventenata dubia I Ventenata Poaceae Verbascum blattaria I Moth Mullein Scrophulariaceae Veronica peregrina ssp. xalapensis N Purslane Speedwell Plantaginaceae Vicia villosa ssp. varia I Winter Vetch Fabaceae Dittes and Guardino Consulting Page 3

18 Appendix B-Table 2. Plant Species Observed within the Proposed Cow Creek Fish Passage - Clover Creek/Millville Diversion Fisheries Restoration Project Study Area, Shasta County, CA Vitis californica N California Wild Grape Vitaceae Wolffia borealis N Northern Watermeal Araceae Wyethia angustifolia N Narrow-leaved Mule's-ears Asteraceae Xanthium strumarium N Cocklebur Asteraceae Zeltnera venusta N Canchalagua Gentianaceae Dittes and Guardino Consulting Page 4