Dams, Water Diversions and Instream Flows

AMERICAN RIVER, CALIFORNIA — INSTREAM FLOWS, WATER TEMPERATURES, AND GROWTH OF ANADROMOUS FISHES

AAR assisted Sacramento County in a multi-year dispute over the effects of  water diversion from the American River Bay by the East Bay Municipal Utility District for domestic uses. To address the relationship between flows in the American River and thermal requirements of anadromous fishes, AAR designed and conducted laboratory and field physiology studies on Chinook salmon, steelhead trout, and American shad.   The results of the studies were presented to the State Water Resources Control Board by Dr. Alice A. Rich.

YUBA RIVER, CALIFORNIA — THERMAL  IMPACTS OF REDUCED FLOWS ON CHINOOK SALMON AND STEELHEAD

AAR analyzed the thermal impacts of  a water diversion on Chinook salmon and steelhead in the Yuba River  for the California Department of Fish and Game (DFG).  The results of the analysis were presented to the State Water Resources Control Board Hearings by Dr. Alice A. Rich.

NOYO RIVER, CALIFORNIA — WATER STORAGE/RECLAMATION– FLOWS, WATER QUALITY, AND WATER TEMPERATURE IMPACTS ON SALMONIDS

AAR conducted a seven-year assessment of fishery resources for a proposed water supply expansion for the City of Fort Bragg.  Of concern were the impacts of flow, water quality, and water temperature changes on coho salmon and steelhead trout.

PG&E’S DE SABLA-CENTERVILLE HYDROELECTRIC PROJECT, CALIFORNIA — THERMAL IMPACTS ON SPRING-RUN CHINOOK SALMON

Dr. Alice Rich provided testimony on the existing thermal conditions within the Project Area.  The testimony included: (1) analyzing the physiological effects of water temperatures on the various life stages of Spring-run Chinook salmon; and, (2) analyzing the effects of water temperature-related mortality (both sublethal and lethal) on the population of Spring-run Chinook salmon in the Butte Creek and West Branch Feather River Systems

CANYON CREEK, CALIFORNIA — SMALL HYDROELECTRIC PROJECT

In connection with a small hydroelectric project, AAR evaluated the water availability and potential conflicts that streamflow withdrawals would have on existing salmonids.