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Demographics

Demographics . Population - 44,301 18% - Aged 65+ Household Median Income- $29,530 Jan.-March 2004 unemployment 14 % . Siskiyou County Land Use . 6,342 sq. miles or 4,058,983 acres 63% public land and 37% private (Only 6% of all land has buildings) 45% of private is in TPZ

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Demographics

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  1. Demographics • Population - 44,301 • 18% - Aged 65+ • Household Median Income- $29,530 • Jan.-March 2004 unemployment 14 %

  2. Siskiyou County Land Use • 6,342 sq. miles or 4,058,983 acres • 63% public land and 37% private (Only 6% of all land has buildings) • 45% of private is in TPZ • 42% of private is in farmland • .8% of private land is urban

  3. Mid-Klamath Basin

  4. Shasta River Valley • 795 sq. mile basin - 508,734 acres • 72% private land – 364,729 acres • 50-55,000 irrigated acres

  5. Topography • 0-7% slope – 56% • 7-15% slope – 23% • 15+% slope – 21%

  6. Climate • Average precipitation is 25.71 inches; ranges from 9 to 75 inches • Average temperature ranges from 34˚F in winter to 72˚F in summer • Extremes range from high of 110˚F to low of -11˚F

  7. Shasta River Dams & Weirs • Dwinell dam blocks accessibility to upper reaches of the Shasta River. • Six temporary flashboard dams and several smaller dams exist below Dwinell

  8. Typical Riparian

  9. Limiting Factors/Issues • Recruitment of spawning gravels • Siltation of gravels • High water temperature • Low dissolved oxygen • Nutrient loading • Difficulty regulating flow • Interception of groundwater/springs

  10. Top 3 Study Needs Shasta CRMP • Model the relationship of flow to rearing habitat • Expand temperature/flow model and habitat/flow models to include all tributaries  • Engineering and economic feasibility study for the Klamath Shasta Water Import Project

  11. Scott River Valley • 814 sq. mile basin - 520,968 acres • 61% private land –316,471 acres • 32,443 Irrigated acres

  12. Topography • 0-7% slope – 23% • 7-15% slope – 23% • 15+% – 54%

  13. Climate • Average precipitation is 35.87 inches. West and south side mountains 60-80 inches. Eastside 12-15 inches • Average temperature ranges from 33˚F in winter to 70˚F in summer • Extremes range from high of 110˚F and low of -23˚F

  14. Eastside Westside

  15. Dredger Tailings • The Scott River from Callahan to French Creek was dredged for gold from the 1920s-40s, Large- scale tailings piles remain for about 6 miles.

  16. Snow-fed Systems 420K average annual discharge

  17. Range of Riparian

  18. Limiting Factors/Issues • Water temperature • Sediment • Accessibility – canyon barriers to spawning and connectivity to summer rearing habitat • Lack of flood plain connectivity • Altered flow regime

  19. Top 3 Study NeedsSiskiyou RCD • Feasibility study for siting of off-stream water storage of about 7-10 K acre feet. • Study to determine the impact of upland consumption by over-stocked trees and junipers on stream flows. • Coho habitat utilization study to determine when 1+yr. leave the tributaries for the mainstem Scott, so connectivity barriers may be addressed.

  20. Salmon River • 751 sq. miles or 480,864 acres • 1% privately owned – 6,232 acres • 205,165 acres or 43% public land in protected status • 250 year round residents

  21. Topography • 0-7% slope – 6% • 7-15% slope – 14% • 15+% – 80%

  22. Climate • Average precipitation is 56.54 inches • Extremes range from high of 112˚F and low of -3˚F

  23. Landslides

  24. Riparian Area

  25. Limiting Factors • Sediment from failing roads, trails and slides • Temperature • Predation • Effects of fire and fire exclusion on the watershed • Invasive species and toxics used for control

  26. Top 3 Study NeedsSalmon River Restoration Council • Understand natural fire regime in the watershed • Understand harvest and hatchery effects on key life stages of Spring Chinook • Find out where Salmon River Spring Chinook go in the ocean

  27. Summary Points • Siskiyou County is a region of ecological transition and diversity on the edge of the range of salmonids • Natural conditions (temperature and precipitation) can be limiting factors • Localized areas of suitable habitat become very important

  28. My Personal Top 3 Studies • Locate where the fish are at their various life stages and describe preferred habitat • Study the relationship of hydrology to areas of suitable habitat and its accessibility • Study the relationship of vegetation (upland and riparian) to altered flow regime

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