Harrison Side Channel
#07-1761 #07-1761
 Entiat Sub-basin Lower Entiat Harrison Side Channel
Organization Upper Columbia Salmon Recovery Board Lead Entity
Sponsor Chelan County Natural Resources Department
Status Completed
Schedule Start Date: 12/13/2007 End Date: 3/16/2010
Priority 1
Category Category: Restoration
Project Photo
DESCRIPTION
The Harrison Side Channel Project was completed by the Chelan County Natural Resources Department (CCNRD) in summer 2008. The Harrison project area is located between river mile 3.7 and 4.2 adjacent to the Entiat River. This river left side channel was cut off from all main channel flows less than a 100 year event through the historic practices of levee building. This project reconnected the relict side channel and floodplain area by removing part of an existing levee, excavating a portion of the middle side channel to ensure perennial flow connection to the main channel, adding large woody debris to the excavated portion of the middle side channel to improve habitat complexity and adding an instream structure to the mainstem Entiat River to redirect the thalweg toward the side channels to provide perennial flow. The levee removal allows connectivity between the mainstem Entiat R. and relic side channels, re-establishing a remnant floodplain. This project was designed to restore floodplain function and increase juvenile salmon and steelhead rearing and steelhead spawning habitat. Hydraulic modeling completed for the 2008 design indicated that sufficient flow would pass through the inlet into the historic oxbow to pass fine sediment and maintain side channel function over time through periodic flushing. The two-dimensional hydraulic model terrain included a small ridge along the right bank of the side channel inlet.
Show more  ↓
FUNDING SOURCES
FUNDING ENTRIES FROM GRANT PROJECT AGREEMENT
TypeDateFunding OrgFunding ProgramMatchAmount
Requested09/17/2007Chelan Co Natural ResourceMatch$270,105.00
Requested09/17/2007Recreation and Conservation OfficeSalmon State Projects$427,382.00
Allocated03/16/2010Chelan Co Natural ResourceMatch$68,766.33
Allocated03/16/2010Recreation and Conservation OfficeSalmon Federal Projects$108,807.65
Spent12/01/2009Chelan Co Natural ResourceMatch-$68,766.33
Spent12/01/2009Recreation and Conservation OfficeSalmon Federal Projects-$108,807.65
Grant Project Agreement Totals Proposed Requested Allocated Spent Balance
$475,078.00 $697,487.00 $177,573.98 $177,573.98 $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
PROJECT CONTACT
COORDINATOR
GRANT MANAGER
LAND OWNER
PARTNER
SPONSOR
PHOTOS

 
LOCATION
Legislative District 2022:12
Sections:14
County:Chelan
Chinook-Pop (ESU):Chinook-Upper Columbia River Spring, Entiat River, Endangered
Chinook2-Pop (ESU):Chinook-Upper Columbia River Summer/Fall, Not Warranted
WRIA:Entiat
HUC12:Mills Creek-Entiat River (170200100209)
Steelhead-Pop (ESU):Steelhead-Upper Columbia River, Entiat River, Threatened
Township:T25NR20E
Lead Entity Area:Upper Columbia
Salmon Recovery Regions:Upper Columbia River
HUC8:Upper Columbia-Entiat (17020010)
View project on a larger map
ACTIVITY-FISH PASSAGE IMPROVEMENT PCSRF
* Miles of Stream Made AccessibleNot entered
*Number of Blockages/Impediments/Barriers Impeding PassageNot entered
ACTIVITY-INSTREAM HABITAT PROJECT PCSRF
Miles of Streambank Stabilized
100%
0.18 Actual
0.18 Planned
Miles
Total Miles Of Instream Habitat Treated
100%
0.27 Actual
0.27 Planned
Miles
Acres Of Off-Channel/Floodplain Connected Or Added 01.5 Acres
Miles of Off-Channel Stream Created 00.27 Miles
Number of structures placed in channel 04 Number
ACTIVITY-RIPARIAN HABITAT PROJECT PCSRF
* Total Riparian Acres TreatedNot entered
* Total Riparian Miles Streambank TreatedNot entered
Acres Planted in riparianNot entered
ACTIVITY-WETLAND PROJECT PCSRF
Total Acres Of Wetland Area TreatedNot entered
PROJECT SCHEDULE
2007 Design by Reclamation
2007 Permitting
2007 Survey
2008 Construction
SUBBASIN
Entiat
ADDITIONAL INFORMATION