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Stanislaus River-Introduction

Stanislaus River-Introduction. River Overview Map Drainage Area Precipitation Hydrology Land Use. Stanislaus River-Introduction (cont.). Beneficial Uses Non-Point Source Pollution Junkyards Agriculture Suburban Management of Non-Point Source Pollution Strategies. Stanislaus River-Map.

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Stanislaus River-Introduction

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  1. Stanislaus River-Introduction • River Overview • Map • Drainage Area • Precipitation • Hydrology • Land Use

  2. Stanislaus River-Introduction (cont.) • Beneficial Uses • Non-Point Source Pollution • Junkyards • Agriculture • Suburban • Management of Non-Point Source Pollution Strategies

  3. Stanislaus River-Map

  4. Upper Stanislaus Drainage Area • Land Use-991 mi2 • 0% urban • 64% forest • 7% crop • Precipitation • Average annual 47.1 inches

  5. Lower Stanislaus River Overview • Extends from Goodwin Dam to the San Joaquin River • 59 Miles • Regulated by releases from New Melones Dam and Tulloch Reservoir

  6. Stanislaus River Overview (cont.) • Precipitation • Average annual 12.84 inches • Channel capacity • 8000 cfs

  7. Stanislaus River-Hydrology • Typical Flows • Annual average-1288 cfs • Dry weather-1816 cfs • .34 inches • Typical wet weather-2226 cfs • 7.33 inches • Flood levels-6385 cfs • 12.29 inches

  8. Historical Stream Flow

  9. Lower Stanislaus River-Estimated Land Use

  10. Stanislaus River-Estimated Land Use (cont.) • Area Estimation • Scanned in quad maps • Scanned in AAA maps • Delineated 3 mile sections of the river • Added up area • Crossed reference with land use information for Middle San Joaquin-Lower Merced-Lower Stanislaus Watershed

  11. Beneficial Uses • Recreation • Rafting • Swimming • Fishing • Fish Habitat • Trout • Steel Head • Salmon • Planting

  12. Beneficial Uses (cont.) • Irrigation Water • Local water districts • Drinking Water • Local communities

  13. Non-Point Source Pollution • Junkyards • Agriculture • Crops/field • Livestock • Suburban • Housing • Illegal dumping

  14. Non-Point Source-Junkyards • Several vehicles underwater • Engine parts • Drums/tires

  15. Non-Point Source-Junkyards (cont.) • Oil/Gas/Grease • Solids • Erosion around vehicles

  16. Non-Point Source-Agriculture • Crops • Pesticides • Erosion • Biomass • Livestock • Manure • Erosion • Excess feed

  17. Non-Point Source-Agriculture Example: Vineyard • Plowed Area on side of hill • Several hundred acres • Rain • Runoff across street into river

  18. Non-Point Source-AgricultureExample: Donkey Farm

  19. Non-Point Source-Donkey Farm (cont.) • Effects • Vegetation loss leading to increased erosion • Manure leads to increased nutrients • nitrogen • phosphorus • Stimulates plant growth

  20. Non-Point Source-Suburban • Trailers and mobile homes line river • commonly inundated

  21. Non-Point Source-Suburban (cont.) • Homes also line river within flowage easement • again, area surrounding house commonly inundated

  22. Non-Point Source-Suburban (cont.) • Effects • Household trash in flow area • Overflow onto lawns • pesticides/fertilizers/grass clipping

  23. Non-Point Source Pollution-Management Strategies • Agriculture • Junkyards • Suburban-household debris

  24. Management of Non-Point Source-Agriculture • Depending on size, require small detention basin • Manure collection • Ensure feed is placed in feed bins to limit runoff • Requirements for animals per acre

  25. Management of Non-Point Source-Junkyards • Require areas to be out of flow stream • Require removal of POLs’ from vehicles prior to storage

  26. Management of Non-Point Source-Suburban • Require houses/mobile homes/trailers to be built out of the flow stream • Restrict storage of household debris within flow stream • Restrict vegetation clearing within flow stream

  27. Conclusion • Non-Point Sources • Junkyards/agriculture/suburban • Possible Management Strategies • Removal of material from high flow areas • Steps to reduce runoff from agriculture areas • Numerous Small Sources • Series of BMPs for all

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