lower mokelumne river l description of watershed l beneficial uses l pollution sources l potential...
TRANSCRIPT
Lower Mokelumne River
Description of Watershed Beneficial Uses Pollution Sources Potential Pollution
Management Strategies
Approximate Area
Topography– Mountainous– Flat
Water Sources– Upper Mokelumne River
• EBMUD
• Melting snow
Drainage Area = 627 mi2
Typical Flow Rates 50% Exceeds 437 10% Exceeds 1,680 Max Flow (1986) 6,060 Min Flow (1977) 23
Avg. Annual Flow 730 Avg. Daily Flow 876 Dry Weather Flow 105
Major Fish Species
* Special Concern Species
Chinook Salmon Rainbow Trout Green Sturgeon* Pacific Lamprey River Lamprey* Prickly Sculpin
Sacramento Blackfish Sacramento Squawfish Sacramento Sucker Tule Perch White Sturgeon
Agriculture
Irrigation (Canals)– 58 MGD to Woodbridge Irrigation District
Stock Watering– Camanche Dam
• Capacity 431,500 ac-ft
– Woodbridge Dam• 2,464 ac-ft
Spawning
Mokelumne River Fish Hatchery– Built by EBMUD as part of water rights deal
– approx. 4 million Salmon and Steelhead Trout per year
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)