Touchet River Assess/Design - Phase 1 Reach 1
#07-1875 #07-1875
Organization Snake River Salmon Recovery Board Lead Entity
Sponsor Walla Walla County Conservation District
Status Completed
Schedule Start Date: 1/1/2008 End Date: 12/1/2010
Category Category: Planning
Project Photo
DESCRIPTION
Walla Walla County Conservation District used this grant to fund a geomorphic assessment of a reach of the Touchet River from ½ mile above the town of Waitsburg, WA to the Hwy 124 Bolles Bridge (river miles 40-45). The assessment examined channel, vegetation, and floodplain conditions. The upper part of this study reach is leveed for to protect the town of Waitsburg and other features along the river. The Highway 12 and Main Street Bridges cross the river along this reach. Generally, the levees transport sediment through the channelized reach, allowing for little deposition, and sediment is deposited in downstream areas, past the confluence with Coppei Creek. The excess accumulation of sediment in areas downstream of the levee system generally has caused higher channel width to depth ratios, leading to extensive bank instability, and a higher probability of channel migration. Objectives of this study were to provide recommendations for accommodating human uses along the Touchet River, while also suggesting ways to improve channel and riparian health and river stability through active restoration and river management. The assessment proposes several areas for restoration, including these activities: bank stabilization, bar stabilization, creation of a bank-full bench, relief channels for routing high flows around or away from structures, or other treatments. Restoration designs are consistent with geomorphic information that has been gathered at each site. Information on pool and riffle dimensions, total scour depth, and meander shape determine the appropriate restoration design. Total station surveys, information from LIDAR imagery, and hydraulic and sediment modeling information have also been used to determine restoration designs.
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FUNDING SOURCES
FUNDING ENTRIES FROM GRANT PROJECT AGREEMENT
TypeDateFunding OrgFunding ProgramMatchAmount
Requested09/17/2007Walla Walla County Conservation DistrictMatch$58,528.00
Requested09/17/2007Recreation and Conservation Office (RCO)Salmon State Projects$155,204.00
Allocated12/01/2010Walla Walla County Conservation DistrictMatch$29,868.63
Allocated12/01/2010Recreation and Conservation Office (RCO)Salmon State Projects$79,205.35
Spent11/18/2010Walla Walla County Conservation DistrictMatch-$29,868.63
Spent11/18/2010Recreation and Conservation Office (RCO)Salmon State Projects-$79,205.35
Grant Project Agreement Totals Proposed Requested Allocated Spent Balance
$213,273.00 $213,732.00 $109,073.98 $109,073.98 $0.00
OTHER FUNDING (Funding that is NOT in a grant project agreement)
TypeDateFunding OrgFunding ProgramMatchAmount
Other Funding Totals Proposed Requested Allocated Spent Balance
Grand Totals Proposed Requested Allocated Spent Balance
PRIMARY SPONSOR
PROJECT CONTACT
PROJECT MANAGER
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LOCATION
Chinook-Pop (ESU):Chinook-Middle Columbia River Spring, Not Warranted
County:Walla Walla
HUC12:Town of Prescott-Touchet River (170701020405)
HUC8:Walla Walla (17070102)
Lead Entity Area:Snake River
Legislative District:16
Salmon Recovery Regions:Snake River
Sections:07
Snake Major Spawning Areas:Middle Touchet River
Steelhead-Pop (ESU):Steelhead-Middle Columbia River, Touchet River, Threatened
Township:T09NR37E
Watershed Administrative Unit:Walla Walla Agricultural Lands
WRIA:Walla Walla
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  APPLICATION FINAL 
PLANNING METRICS
Area Encompassed (acres) (B.0.b.1)
240.00acres
Miles of Stream and/or Shoreline Affected (B.0.b.2)
ADDITIONAL INFORMATION