Office of Columbia River > Instream Benefits >
Stream Flow Enhancement Projects
Stream Flow Enhancement Projects
OCR is funding a number of projects that will increase
instream flows.
Lake Roosevelt Incremental Storage Releases:
Annually, releases at Lake Roosevelt will add 27,500 acre-feet of
water to instream flows. In drought years, another 17,000 acre-feet will
be added to that quantity. Additionally, 25,000 acre-feet of the
releases will be allocated for municipal use. Much of that water will be
available to enhance instream flows in the Hanford Reach—the most
productive salmon spawning area of the Columbia River. More information...
Barker Ranch Canal Piping:
This project converted the Horn Rapids Canal
from an open ditch to a closed pipe system. The resulting
efficeiency savings increased flows in a
seven-mile stretch of the Yakima River by up to 10 cfs.
More information...
Kennewick Irrigation District
(KID)/Red Mountain AVA Pump exchange:
In addition to other efficiency improvements, KID will move a
water diversion point on the Yakima River from Prosser to Kiona. The
move and efficiency savings will provide an additional 11,005 ac-ft
of water to a low flowing stretch of the Yakima River.
More information...
Yakima Basin Integrated Water Resource Management Plan:
OCR, the U.S. Bureau of Reclamation, the Yakama Nation,
irrigation districts, environmental organizations, and other
federal, state, county, and city governments and agencies. are
collaborating on a plan to address the Yakima Basin's water
problems. Instream benefits will be provided by water conveyance
efficiency improvements, decreased power generation at Roza Dam and
Chandler Powerhouse, construction of a pipeline between Lake
Keechelus and Lake Kachess and other construction and conservation
projects.
Additionally, fish survival will be
enhanced through habitat protection and enhancement and passage improvement. More information about Yakima Basin Integrated Water
Resource Management.
Walla Walla Pump Exchange:
OCR provided $400,000 to the Confederated
Tribes of the Umatilla Indian Reservation for a cooperative study in the
Walla Walla River Basin. Due in 2009, the four-year study assesses the
feasibility of restoring stream flows through several options,
including: acquisition, water conservation, groundwater recharge, and
replacing Walla Walla River irrigation water with Columbia River water.
Manastash Ditch Piping:
This project will result in piping the
Manastash Water Ditch Association’s unlined ditch from the Kittitas
Reclamation District’s south branch to Hanson Road. Approximately 4,440
feet of ditch would be piped with a net water savings of 1.4 cfs. By
consolidating points of diversions, the Manastash Creek Restoration
Project has potential to re-wet a portion of the stream that is
typically dry during irrigation season.
Beaver Population Enhancement & Water Storage Feasibility Study:
This project is a study of small storage
potential in natural environments through the re-introduction of beaver
to the upper Columbia River Basin and tributaries. Wetlands created by
the beavers would capture peak spring runoff and retime it for both
water supply and water quality benefits. News report on Beaver Study.
Campbell Creek Reservoir Feasibility Study:
This study will examine the possibility of
constructing an off-stream reservoir that will store water and release
it to the Peshastin Irrigation District. The water would be used to
replace Peshastin Creek diversions. Current District diversions from
Peshastin Creek would remain instream to benefit fish. Stream flows
would be increased by 1.7-3.3 cfs depending upon the month in the lower
1.5 miles of the Peshastin Creek and 18 miles of the Wenatchee River.