1. Bear River Cathy Lee CE 296 B Spring 1998 Assignment #4

2. Bear River Introduction Watershed Information Beneficial Uses Point Source Pollution Non-Point Source Pollution Management of Non-Point Source Pollution

3. Bear River Introduction Approximately 80 miles long. From Tahoe National Forest to Feather River in Yuba County

4. Watershed Overview Watershed Ranking Hydrology Land Uses Bear River Watershed Information

5. Two Basins - Upper Bear River Watershed (369.93 mi 2 ) Bear River Little Clipper Creek Little Wolf Creek - Lower Bear River Watershed (105.5. mi 2 ) Bear River

6. Bear River Watershed Information Watershed Ranking 1997 California Rivers Assessment: Functioning - at risk

7. Hydrology Average annual flow:400 cfs Dry Weather Flow Rate :11 cfs Wet Weather Flow Rate:1080 cfs Min. Dry Weather:0 cfs (1977) Max. Wet Weather:48,000 cfs (1986) Bear River Watershed Information

8. Water Diversion

9. Land Use - Upper Bear Bear River Watershed Information

10. Land Use - Lower Bear Bear River Watershed Information

11. Industrial - Power Generation** Agricultural Water Supply** Recreation - Contact and Non-Contact* Municipal Water Supply Fish Habitat, Migration, and Spawning Wildlife Habitat Bear River Beneficial Uses

12. Power Generation Upper Bear River Watershed Only 11 Hydroelectric Power Facilities 581.71 gigawatt hours / year Bear River Beneficial Uses

14. Recreation Upper Bear River Watershed Swimming Fishing Shoreline Activities

15. Agricultural Irrigation Lower Bear River Watershed Both crops and livestock 17.66 mgd = 27.5 cfs (Average) Bear River Beneficial Uses

16. Bear River Point Source Pollution 2 Major Point Source Discharges City of Grass Valley Beale Air Force Base Not Directly into the River

17. Sources Agriculture –Fertilizer Use –Pesticide Application –Animal Waste –Sedimentation / Erosion Bear River Non-point Source Pollution

18. Example- Storm water carrying trash and debris entering the River Bear River Non-point Source Pollution

19. Reduce Agricultural Runoff –Apply fertilizer and pesticides at the proper agronomic rates –Timing of application –Use of filter media, i.e. grass, to absorb extra fertilizers, pesticides, and water between orchard rows Bear River Management Strategies

20. Public Education –Proper use of fertilizers and pesticide Implement BMPs –Land use : Crop rotation Minimum distance between the River and farm –Livestock manure control –Fertilizer and pesticide sales