Lower Mokelumne River

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					    Lower Mokelumne River
   Description of Watershed
   Beneficial Uses
   Pollution Sources
   Potential Pollution Management
    Strategies
    Description of Watershed
   Approximate Area
   Land Uses
   Typical Flow Rates
   Major Fish Species
         Approximate Area
   Topography
    – Mountainous
    – Flat
   Water Sources
    – Upper Mokelumne River
      • EBMUD
      • Melting snow
   Drainage Area = 627 mi2
              Land Uses
   Agriculture      70%
   Urban/Suburban   10%
   Undeveloped      20%
           Typical Flow Rates
   Avg. Annual Flow   730      50% Exceeds         437
   Avg. Daily Flow    876      10% Exceeds       1,680
   Dry Weather Flow   105      Max Flow (1986)   6,060
                                Min Flow (1977)      23
          Major Fish Species
   Chinook Salmon         Sacramento Blackfish
   Rainbow Trout          Sacramento Squawfish
   Green Sturgeon*        Sacramento Sucker
   Pacific Lamprey        Tule Perch
   River Lamprey*         White Sturgeon
   Prickly Sculpin

   * Special Concern Species
           Beneficial Uses
   Agriculture
   Recreation
   Migration
   Spawning
   Wildlife Habitat
   Power Generation
                  Agriculture
   Irrigation (Canals)
    – 58 MGD to Woodbridge Irrigation District
   Stock Watering
    – Camanche Dam
       • Capacity 431,500 ac-ft
    – Woodbridge Dam
       • 2,464 ac-ft
                 Recreation
   Contact                   Canoeing and Rafting
    – Lodi Lake
    – Camanche Reservoir
    – New Hope Landing
                   Migration
   Fish Ladders
                   Spawning
   Mokelumne River Fish Hatchery
    – Built by EBMUD as part of water rights deal
    – approx. 4 million Salmon and Steelhead Trout per year
              Wildlife Habitat
   Grazing
   Hunting
           Power Generation
   East Bay Municipal Utilities District
    – Hydroelectric Power - 40 million KW- hour/year
    – Enough to meet needs of 10,400 people
           Pollution Sources
   EPA Index of Watershed Indicators
    – Rank 4: Less serious water quality problems -
      High vulnerability to stressors such as pollutant
      loadings
   Point Source
   Non-Point Source
               Point Sources
   No CERCLA Sites
   Gravel Mining
     – 2 major dredge tailing areas w/many gravel pits
   Industrial Waste Ponds
     – 4 main areas
   Sewage Waste Ponds
     – 2 locations
   Lodi Treatment Plant (4 discharge points)
           Non-Point Source
   Agriculture
    – Fertilizers
    – Pesticides
   Farming
    – Grazing animals
   City of Lodi (Storm sewers?)
   Boating (New Hope Landing)
       Potential Pollution
      Management Strategies
   Excavate Dredge Tailings
   Grazing Control
   Limit boating activities
   Limit pesticide/fertilizer use
   ?????

				
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posted:10/5/2011
language:English
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