Issaquah Creek In-stream Restoration
#IC-R1-1-INS #IC-R1-1-INS
 Tier 1 Issaquah Creek Issaquah Creek In-stream Restoration
Organization Lake Washington/Cedar/Sammamish Watershed (WRIA 8) Lead Entity
Sponsor Mountains to Sound Greenway Trust
Status Active
Schedule Start Date: 9/16/2020 End Date: 12/31/2026
Category Category: Restoration
DESCRIPTION
The Mountains to Sound Greenway Trust will complete final designs and permitting and construct Phase 1 of a habitat restoration project along ~3,165 feet  of Issaquah Creek in Lake Sammamish State Park. Within the project area the creek is incised in many locations, with moderate to high flows confined to a primary, single-thread channel without high-flow refugia. The goal of the project is to restore natural habitat forming processes to improve juvenile rearing habitat for Chinook and other salmonids by connecting the creek to its floodplain, increasing off-channel habitat, improving in-stream habitat diversity and complexity by adding large wood, and enhancing riparian buffers and wetland habitat.  This phase of  the project targets restoration of Reaches 2 and 3 as described in the attached Preliminary Design Report. the Greenway Trust will also install an interpretive sign to educate park visitors about ways they can support salmon recovery. In addition to advancing recovery of  ESA-listed Chinook, this project seeks to  increase salmon populations to feed ESA-listed Southern Resident Orcas. This project continues the work underway between the Greenway Trust, State Parks, and other partners, and builds upon 15+ years of riparian habitat restoration. When all phases of the overall restoration project are funded and constructed, more than 6,500 feet of Issaquah Creek in Lake Sammamish State Park will be restored. Final Designs will meet Manual 18 Appendix D-3.  
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FUNDING SOURCES
FUNDING ENTRIES FROM GRANT PROJECT AGREEMENT
TypeDateFunding OrgFunding ProgramMatchAmount
Requested06/29/2020Mountains to Sound Greenway TrustMatch$325,000.00
Requested06/29/2020Recreation and Conservation Office (RCO)Salmon State Projects$1,840,560.00
Allocated06/13/2024Mountains to Sound Greenway TrustMatch$325,000.00
Allocated06/13/2024Recreation and Conservation Office (RCO)Salmon State Projects$445,894.00
Allocated06/13/2024Recreation and Conservation Office (RCO)Puget Sound Acq. & Restoration$631,983.00
Allocated06/13/2024Recreation and Conservation Office (RCO)Salmon Federal Projects$762,683.00
Spent09/20/2022Recreation and Conservation Office (RCO)Salmon State Projects-$134,559.42
Spent09/19/2023Recreation and Conservation Office (RCO)Puget Sound Acq. & Restoration-$40,428.35
Spent07/09/2024Mountains to Sound Greenway TrustMatch-$93,965.29
Spent07/09/2024Recreation and Conservation Office (RCO)Salmon Federal Projects-$357,162.22
Grant Project Agreement Totals Proposed Requested Allocated Spent Balance
$3,500,000.00 $2,165,560.00 $2,165,560.00 $626,115.28 $1,539,444.72
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
PHOTOS

 
LOCATION
Chinook-Pop (ESU):Chinook-Puget Sound, Sammamish River, Threatened
Chum-Pop (ESU):Chum-Puget Sound/Strait of Georgia, Not Warranted
City Areas:Issaquah
Coho-Pop (ESU):Coho-Puget Sound/Strait of Georgia, Species of Concern
County:King
HUC12:Issaquah Creek (171100120201)
HUC12:Lake Sammamish-Sammamish River (171100120202)
HUC8:Lake Washington (17110012)
Lead Entity Area:Lake Washington/Cedar/Sammamish Watershed (WRIA 8)
Legislative District:41
Pink-Pop (ESU):Pink-Odd Year, Not Warranted
Puget Sound Action Areas:South Central Puget Sound
Salmon Recovery Regions:Puget Sound
Sections:16
Sections:17
Sections:20
Sections:21
Steelhead-Pop (ESU):Steelhead-Puget Sound, North Lake Washington and Lake Sammamish, Threatened
Township:T24NR06E
Watershed Administrative Unit:Lake Sammamish
Watershed Administrative Unit:Tiger
WRIA:Cedar - Sammamish
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Related Projects

  APPLICATION FINAL 
RESTORATION METRICS
Miles of Stream and/or Shoreline Treated or Protected (C.0.b)
0.60mi
Instream Habitat Project    
Total Miles Of Instream Habitat Treated (C.4.b)
1.25mi
 Channel reconfiguration and connectivity (C.4.c.1)    
Acres Of Channel/Off-Channel Connected Or Added (C.4.c.5)
1.50acres
Instream Pools Created/Added (C.4.c.6)
0.00
Miles of Off-Channel Stream Created or Connected (C.4.c.4)
0.30mi
Miles of Stream Treated for channel reconfiguration and connectivity (C.4.c.3)
0.30mi
 Channel structure placement (C.4.d.1)    
Miles of Stream Treated for channel structure placement (C.4.d.3)
0.60mi
Number of structures placed in channel (C.4.d.7)
37.00
Pools Created through channel structure placement (C.4.d.5)
23.00
 Unspecified or other instream habitat project. (C.4.j.1)    
Unspecified Or Other Instream Habitat Project (C.4.j.2)
0.00mi
Riparian Habitat Project    
*Total Riparian Acres Treated (C.5.b.2)
3.50acres
*Total Riparian Miles Streambank Treated (C.5.b.1)
0.30mi
 Planting (C.5.c.1)    
Acres Planted in riparian (C.5.c.3)
5.00acres
Miles of streambank planted (C.5.c.4)
0.25mi
 Riparian Plant removal / control (C.5.h.1)    
Acres of riparian treated for plant removal/control (C.5.h.3)
4.00acres
Miles of streambank treated for plant removal/control (C.5.h.4)
0.25mi
NOTES
State Parks will be conducting restoration assessment starting in 2004, in support of Park redevelopment program. Planning has not yet begun. WSDOT may be in need of a mitigation site in the area due to I-405 improvements, and could be a source of funding. There are large degraded wetlands in reach that could be restored/reconnected to creek. However, wetland restoration may not benefit Chinook - could increase bass predation on Chinook. Channel is quite active in this area, and any park development should be conducted so as to allow for continued meandering. Some work could be done to reduce incision of creek and reconnect it with the floodplain in the uppermost portion of the site.