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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

  • River Overview

    • Map

    • Drainage Area

    • Precipitation

    • Hydrology

    • Land Use


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Stanislaus River-Introduction (cont.)

  • Beneficial Uses

  • Non-Point Source Pollution

    • Junkyards

    • Agriculture

    • Suburban

  • Management of Non-Point Source Pollution Strategies



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Upper Stanislaus Drainage Area

  • Land Use-991 mi2

    • 0% urban

    • 64% forest

    • 7% crop

  • Precipitation

    • Average annual 47.1 inches


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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


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Stanislaus River Overview (cont.)

  • Precipitation

    • Average annual 12.84 inches

  • Channel capacity

    • 8000 cfs


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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




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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


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Beneficial Uses

  • Recreation

    • Rafting

    • Swimming

    • Fishing

  • Fish Habitat

    • Trout

    • Steel Head

    • Salmon

    • Planting


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Beneficial Uses (cont.)

  • Irrigation Water

    • Local water districts

  • Drinking Water

    • Local communities


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Non-Point Source Pollution

  • Junkyards

  • Agriculture

    • Crops/field

    • Livestock

  • Suburban

    • Housing

  • Illegal dumping


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Non-Point Source-Junkyards

  • Several vehicles underwater

  • Engine parts

  • Drums/tires


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Non-Point Source-Junkyards (cont.)

  • Oil/Gas/Grease

  • Solids

  • Erosion around vehicles


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Non-Point Source-Agriculture

  • Crops

    • Pesticides

    • Erosion

    • Biomass

  • Livestock

    • Manure

    • Erosion

    • Excess feed


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Non-Point Source-Agriculture Example: Vineyard

  • Plowed Area on side of hill

    • Several hundred acres

    • Rain

    • Runoff across street into river


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Non-Point Source-AgricultureExample: Donkey Farm


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Non-Point Source-Donkey Farm (cont.)

  • Effects

    • Vegetation loss leading to increased erosion

    • Manure leads to increased nutrients

      • nitrogen

      • phosphorus

    • Stimulates plant growth


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Non-Point Source-Suburban

  • Trailers and mobile homes line river

    • commonly inundated


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Non-Point Source-Suburban (cont.)

  • Homes also line river within flowage easement

    • again, area surrounding house commonly inundated


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Non-Point Source-Suburban (cont.)

  • Effects

    • Household trash in flow area

    • Overflow onto lawns

      • pesticides/fertilizers/grass clipping


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Non-Point Source Pollution-Management Strategies

  • Agriculture

  • Junkyards

  • Suburban-household debris


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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


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Management of Non-Point Source-Junkyards

  • Require areas to be out of flow stream

  • Require removal of POLs’ from vehicles prior to storage


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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


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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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