Pine Flat Turbine Bypass
The Pine Flat Turbine Bypass, a $6 million project completed in the spring of
2003, helps to control the temperature of water being released from Pine Flat
Reservoir into the Kings River when irrigation demands are too low to generate
electricity. The turbine bypass benefits the cold-water fishery during low-flow
periods of the year. Such conditions typically occur in the late summer and fall
months.
The system of pipes, valves and support structures connecting the Jeff L Taylor
Pine Flat Power Plant's three penstocks provide cooler water for the trout fishery
downstream from the dam. The new plumbing can also be used to preserve remaining
reserves of cold water in the reservoir under very dry conditions. Additionally, the
turbine bypass efficiently takes care of dissolved oxygen needs downstream from the
dam when the device is in use.
The U.S. Army Corps of Engineers, the federal agency that operates and maintains
Pine Flat Dam, administered the project. The Corps, with support and legislative
backing by Congress, pursued design and development of the turbine bypass as a
modification of the original Pine Flat Project.
KRCD was the local cost-sharing sponsor, with financial support from the
Kings River Water Association
(KRWA), the California Department of
Fish and Game and the California
Department of Water Resources.
KRCD's Pine Flat Power Plant staff operates the turbine bypass throughout the
year and releases water through the bypass as needed. At times during the late
summer and fall months, extreme temperatures and low river flows require the Pine
Flat staff to coordinate the bypass system and spill from the dam to regulate river
temperatures. KRWA advises the staff on desired blending rates for these two methods
of releasing water.
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