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SUNNYSIDE/SNAKE RIVER WILDLIFE AREA MANAGEMENT PLAN Washington Department of Fish and Wildlife Prepared by Wildlife Area Manager, Rocky Ross & Leray Stream, Regional Wildlife Program Manager 2006 STATE OF WASHINGTON CHRIS GREGOIRE, GOVERNOR DEPARTMENT OF FISH AND WILDLIFE JEFF KOENINGS, Ph.D., DIRECTOR WILDLIFE PROGRAM DAVE BRITTELL, ASSISTANT DIRECTOR LANDS DIVISION MARK QUINN, MANAGER The Sunnyside Wildlife Area is primarily funded by the Bonneville Power Administration to mitigate for the Federal Columbia River Hydropower System. (Project Number 200201400) & The Snake River Units are funded by the Army Corp of Engineers to mitigate for the Snake River hydroelectric projects. This report should be cited as: Washington Department of Fish and Wildlife. 2006. Sunnyside/Snake River Wildlife Area Management Plan. Wildlife Management Program, Washington Department of Fish and Wildlife, Olympia. 214 pp. Washington State Wildlife Area Plan SUNNYSIDE / SNAKE RIVER WILDLIFE AREA Washington Department of Fish and Wildlife Wildlife Management Program 600 Capitol Way North Olympia, WA 98501-1091 Table of Contents EXECUTIVE SUMMARY................................................................................................................ vi CHAPTER I. INTRODUCTION...................................................................................................... 1 1.1 Agency Mission Statement ..................................................................................................... 1 1.2 Agency Goals and Objectives................................................................................................. 1 1.3 Agency Policies........................................................................................................................ 2 1.4 Sunnyside/Snake River Wildlife Area Complex Goals........................................................ 2 1.5 Planning Process ..................................................................................................................... 2 1.6 Other Stakeholders ................................................................................................................. 4 CHAPTER II. AREA DESCRIPTIONS AND MAPS..................................................................... 5 2.1 Property Locations and Size .................................................................................................. 5 2.2 Purchase History and Purpose ............................................................................................ 36 2.3 Ownership and Use of Adjacent Lands .............................................................................. 45 2.4 Funding .................................................................................................................................. 45 2.5 Climate................................................................................................................................... 48 2.6 Soils and Geology .................................................................................................................. 49 2.7 Hydrology and Watersheds.................................................................................................. 52 2.8 Fire History............................................................................................................................ 55 2.9 Vegetation Characterization................................................................................................ 56 2.10 Important Habitats ............................................................................................................. 62 2.11 Fish and Wildlife................................................................................................................. 67 2.11.1 Fish Resources ............................................................................................................... 71 2.11.2 Amphibians/Reptiles...................................................................................................... 74 2.11.3 Birds............................................................................................................................... 75 2.11.4 Mammals........................................................................................................................ 82 2.11.5 Species of Concern or Special Status/ Priority Species................................................. 86 2.12 Cultural Resources.............................................................................................................. 88 CHAPTER III. MANAGEMENT OBJECTIVES, ISSUES & STRATEGIES ........................... 89 Agency Objective: Protect, restore and enhance fish and wildlife populations and their habitats......................................................................................................................................... 89 1. Improve or Maintain Big Game Populations........................................................................ 89 2. Protect, Enhance and Restore Function and Structure of Native Habitats ........................... 90 3. Monitor and Control Noxious Weeds................................................................................... 92 4. Enhance and Protect Endangered, Threatened, and Sensitive Species................................. 94 5. Improve and Maintain Fish Populations............................................................................... 95 6. Protect Upland Game Bird Habitat....................................................................................... 96 November 2006 ii Washington Department of Fish and Wildlife 7. Protect and Manage Other Species ....................................................................................... 98 Agency Objective: Provide sustainable fish and wildlife-related recreational and commercial opportunities compatible with maintaining healthy fish and wildlife populations and habitats. Improve the economic well being of Washington by providing diverse, high-quality recreational and commercial opportunities. ........................................ 99 1. Provide Public Access Compatible With Fish, Wildlife and Habitat Protection.................. 99 2. Provide Commercial Opportunities Compatible With Fish, Wildlife and Habitat Protection ................................................................................................................................................. 100 3. Provide Fish and Wildlife Recreational Opportunities....................................................... 101 Agency Objective: Minimize adverse interactions between humans and wildlife............. 102 1. Provide Refuge Areas for Wildlife and Reduce Winter Disturbance................................. 102 2. Implement Strategies to Reduce Elk Damage on Private Lands ........................................ 103 Agency Objective: Ensure WDFW activities, programs, facilities and lands are consistent with local, state and federal regulations that protect and recover fish, wildlife and their habitats....................................................................................................................................... 103 1. Manage Weeds in a Manner Consistent with Local, State, and Federal Regulations ........ 103 2. Manage Species and Habitats in Compliance with ESA and EPA Regulations................. 104 3. Provide Fire Management on WDFW Lands ..................................................................... 105 4. Protect Cultural Resources Consistent with State and Federal Law................................... 105 5. Pay PILT and Assessment Obligations............................................................................... 105 Agency Objective: Work with Tribal governments to ensure fish and wildlife management objectives are achieved. ............................................................................................................ 106 1. Discuss Mutual Concerns for Wildlife Resources with Tribal Representatives................. 106 Region wide ............................................................................................................................ 106 Agency Objective: Connect with those interested in Washington's fish and wildlife. ...... 107 1. Offer Volunteer Projects to Involve the Public in Wildlife Area Efforts ........................... 107 2. Participate in Local Cooperative Projects........................................................................... 107 3. Be Responsive to Public Concerns ..................................................................................... 107 Agency objective: Provide sound operational management of WDFW lands, facilities and access sites.................................................................................................................................. 108 1. Develop, and Annually Update a Management Plan for the Sunnyside/Snake River Complex.................................................................................................................................. 108 2. Monitor All Grazing & Agricultural Leases to Ensure Proper Land Use........................... 108 3. Maintain Roads and Trails as Necessary to Perform Management Functions ................... 109 Thornton Unit.......................................................................................................................... 109 4. Maintain a Knowledgeable and Well-Trained Work Force................................................ 110 5. Maintain
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