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South Fork Coquille Watershed Analysis

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South Fork Coquille Watershed Analysis DOCUMENT A 13.66/2: COQUILLE fiVE, LOWER S.F. 17 10 03 00* I C 66x 1 COQUILLE RIVER, UPPER S.F 17 1:-03 01* ' United States Q, '0) Departimnt of Agriculture THIS PUBLICATION Forest Serilce CMN FE CHECKED OUT Pacific Northwest Region 1995 JA* fSouth Fork Coquille Wate1hed Analysis Iteration 1.0 Powers Ranger Distric, Slsklyou National Forest September 1995 SOUTHERN OREGON UNWVERSiTY LIBRARY ASHLAND, OREGON 97520 United Stat. Depaenent of Agnculure Forest Service Pacific Northwest Region 1995 SOUTH FORK COQUILLE WATERSHED ANALYSIS ITERATION 1.0 I have read this analysis and it meets the Standards and Guidelines for watershed analysis required by an amendment to the Forest Plan (Record of Decision dated April 1994). Any additional evidence needed to make a decision will be gathered site-specifically as part of a NEPA document or as an update to this document. SIGNED CoQ 4 DATE q 1T2 letE District Ranger Powers Ranger District Siskiyou National Forest South Fork Coquille Watershed Analysis - September 1995 Developed by Interdisciplinary Team Members: Steve Harbert Team leader Betsy Howell Wildlife Biologist Dave Shea Botantist, Wildlife Biologist Ruth Sisko Forester Cindy Ricks Geologist Chris Parks Hydrologist Max Yager Fish Biologist Kathy Helm Writer-Editor (March-April 1995), BLM Tina Harbert Writer-Editor (May-July 1995), Powers R.D. Joe Hallett Cultural Resource Key Support: Joel King Forest Planner, Siskiyou National Forest Sue Olson Acting District Ranger, Powers R.D. (Jan-May 1995) Carl Linderman District Ranger, Powers R.D. Marshall Foster GIS, Powers R.D. Jodi Shorb Computer Assistant Linda Spencer Computer Support For Further Information, contact: Powers Ranger District Powers, OR 97466 (503) 439-3011 The policy of the United States Department of Agriculture Forest Service prohibits discrimination on the basis of race, color, national origin, age, religion, sex, or disability, familial status, or political affiliation. Persons believing they have been discriminated against in any Forest Service related activity should write to: Chief, Forest Service, USDA, P. 0. Box 96090, Washington, DC 20090-6090 South Fork Coquille Watershed Analysh - September 1995 SOUTH FORK COQUILLE WATERSHED ANALYSIS TABLE OF CONTENTS Watershed Overview Purpose 03 Values 03 Management Context 05 Southwestern Oregon Province South Coast Basin Coquille Basin South Fork Coq Social Setting (History) 07 Physical Setting 08 Climate Geology Biological Setting 09 Vegetation Wildlife Fisheries List of Figures: Figure 0-1: Vicinity Map 02 Figure 0-2: South Fork Coquille Watershed Analysis Area 03 Figure 0-3: Main Road Locations 04 South Fork Coquill Watershed Analysls - September 1995 Aquatic Ecosystem I. Watershed Geology and Geomorphology Al II. Aquatic Ecosystem Processes, Conditions, and Trends A4 A. Sediment Delivery A4 B. Large Wood A7 C. Water Quality A8 1. Turbidity 2. Stream Temperature D. Channel Morphology and Substrate A12 E. Key Fish Habitat Reaches and Fish Habitat Indicators A12 F. Fish Species, Distribution, and Population A17 1. Spring Chinook 2. Fall Chinook 3. Coho Salmon 4. Winter Steelhead 5. Sea-run Cutthroat 6. Resident Rainbow and Cutthroat Trout 7. Brook Trout 8. Other Species Ill. Subwatershed Processes, Conditions, and Trends A30 A. Foggy/Eden A30 B. Wooden Rock Creek A31 C. Upper Mainstem A32 D. Rock Creek A33 E. Johnson/Sucker Creek A35 F. Coal Creek A37 G. Lower Mainstem A38 H. Hayes Creek A39 IV. Findings of Fact A40 V. Summary of Data Gaps A42 VI. Management Recommendations A43 South Fork Coquill. Waterahod Analyss - September 1995 Aquatic Ecosystem (cont.) List of Tables: Table A-1: Fish Species found within the South Fork Coquille River Key A45 Watershed, 1995. Table A-2: Salmonid Life Cycles and Critical Watershed Habitat A46 Table A-3: Subwatershed Area, Habitat Miles A47 Table A-4: Current Physical Habitat Variables by Subwatershed A47 Table A-5: Stream Survey Data A48 Table A-6: Miles of High and Moderate Sensitivity Road A49 Table A-7: 1994 Maximum Water Temperatures by Subwatersheds A50 Table A-8: Change in Late Seral Successional Stage of Uplands and A51 Riparian Reserves List of Figures: Figure A-1: South Fork Coquille Geology (including Salmon Creek) A2 Figure A-2: Slope Steepness and Road Locations A3 Figure A-3: Riparian Reserve Seral Stage A6 Figure A-4: Stream Temperature Monitoring, 1993 A10 Figure A-5: Productive Flats and Lakes A13 Figure A-6 Fish Distribution A18 Figure A-7: Number of Adult Spring Chinook Observed in 3 Holding Pools A19 by Year Figure A-8: Historic Coho Distribution A23 Figure A-9: Current Coho Distribution A25 Figure A-10: Land Ownership and Federal Designation by Subbasin A52 Figure A-1 1: Foggy Creek Watershed Sensitive Area Disturbance History A53 Figure A-12: Wooden Rock Creek Watershed Sensitive Area Disturbance A53 History Figure A-13: Upper Mainstem Facing Watersheds Sensitive Area A54 Disturbance History Figure A-14: Rock Creek Watershed Sensitive Area Disturbance History A54 Figure A-15: Johnson Creek Watershed Sensitive Area Disturbance History A55 Figure A-16: Coal Creek Watershed Sensitive Area Disturbance History A55 Figure A- 17: Lower Mainstem Facing Watersheds Sensitive Area A56 Disturbance History South Fork Coquill. Watershed Analysis - September 1995 Social Discussion Timber Commodity Si Processes Reference/Historical Condition Current Conditions Future Trends Non-Timber Commodities S5 Processes Reference/Historical Conditions Current Conditions Future Trends Other Forest Products S7 Processes Reference/Historical Conditions Current Conditions Future Trends Mining S8 Processes Reference/Historical Conditions Current Conditions Future Trends Non-Commodity SIO Processes Reference/Historical Conditions Current Conditions Future Trends Findings of Fact S13 Opportunities S14 Data Gap S15 Management Recommendations S15 List of Tables: Table S-1: Recreation Sites and Trails within the South Fork Coquille S17 Watershed List of Figures: Figure S-1: Manaqeable Matrix Lands sacC9 South Fork Coquille Watershed Analysis - September 1995 Terrestrial Ecosystem Watershed Vegetation TI Processes Reference/Historical Condition Current Condition Sensitive Species Exotic (non-native) Species Future Trends Port-Orford cedar T8 Processes Reference/Historical Condition Current Condition Future Trends Wildlife TI 0 Processes Reference/Historical Condition Current Condition Mammals T13 Native Mammals Non-native Mammals Threatened, Endangered, and Sensitive Mammals Birds T13 Native Birds Non-native Birds Threatened, Endangered, and Sensitive Mammals Reptiles and Amphibians T15 Native Reptiles and Amphibians Non-native Reptiles and Amphibians Threatened, Endangered, and Sensitive Species Habitats T1 7 Future Trends Findings of Fact T20 Data Gaps T21 Opportunities T22 Management Recommendations T23 South Fork Coquille Watershed Analysis - September 1995 Terrestrial Ecosystem (cont.) List of Figures: Figure T-1: South Fork Coquille Watershed Existing Vegetation T3 Figure T-2: South Fork Coquille Watershed Historical Vegetation, 1890 T4 Figure T-3: South Fork Coquille Watershed Future Vegetation, 2040 T5 Figure T-4: Status of Port-Orford cedar within the South Fork Coquille Figure T12 Watershed Figure T-5: Areas of Elk Concentration within the South Fork Coquille T19 Watershed Figure T-6: Hardwood Stands within the South Fork Coquille Watershed T26 List of Tables: Table T-1: List of Special Habitats and Acres T27 South Fork Coquill. Watershed Analysis - September 1995 GLOSSARY REFERENCES APPENDICES: Appendix A: Methods Appendix B: Road Segments with Past or High Potential for Initiating Debris Flows Appendix C: South Fork Coquille River Historical Summary Appendix D: Exotic Plant Species Present within the South Fork Coquille River Watershed. Appendix E: Amphibians, Reptiles and Mammals of the South Fork Coquille Watershed and their Associated Habitat. Appendix F.: Birds of the South Fork Coquille Watershed and their Associated Habitat. South Fork Coquill. Watershod Anaiysis - September 1995 WATERSHED OVERVIEW INTRODUCTION The South Fork Coquille was designated as a Key Watershed by the Forest Ecosystem Management Assessment Team (FEMAT) in 1993 and the Northwest Forest Plan (USDA, 1994). Key Watersheds serve as refuge areas, or refugia, critical for maintaing and recovering habitat for at-risk stocks of anadromous salmonids. FEMAT direction requries that a watershed assessment be completed prior to identifying and implementing projects in Key Watersheds. Supplemental direction was provided to guide urgently needed restoriation work for fiscal year 1994 with an abbreviated analysis process. A preliminary watershed restoration assessment consists of: 1) identifying prinicipal issues that drive the need for action; 2) describing ecological processes and existing conditions within the watershed; 3) defining activities that need to be modified to achieve the desired condition; and 4) outlining restoration opportunities. The South Fork Coquille Watershed Analysis summarizes key information for the Upper South Fork Coquille beginning at the headwaters in Eden Valley and ending one mile south of the town of Powers. In this discussion, "South Fork Coquille" or "key watershed" refers to the Upper South Fork Coquille analysis area. (Figure 0-1) The analysis area contains 61,316 acres of Federally managed land and 25,749 acres of privately owned land for an approximate total of 87,100 acres. This is divided into eight subwatersheds (Foggy/Eden, Wooden Rock, Upper Mainstem, Johnson/Sucker, Rock, Lower
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