Dillwater LWD Enhancement
|
Chelan Co Natural Resource; Dillwater LWD Enhancement (#10-1843)
09/28/2012, Attachment #152924, 2012 Mckenzie-Dillwater 005
|
|
|
|
|
|
The Dillwater LWD Enhancement project, located between River Mile 21.2 and 21.4 on the Entiat River, aims to improve habitat complexity by construction of 4-5 Engineered Log Jams (ELJs) in the main channel and along the banks. This project is located in the “Stillwater Reach” which will be intensively monitored for fish response to restoration activities by the ISEMP Program in 2011. The upper sub-basin is considered a Category 1 Watershed and is also a critical spawning area for Federally Endangered spring Chinook, Threatened Upper Columbia River steelhead, and Threatened bull trout. This project would have direct benefits to a 1/3-mile reach on the mainstem, improve habitat conditions in a 1,100 ft side-channel, and affect approximately 13 acres of connected riparian floodplain. The USBR Preston Reach Assessment recommends the addition of large woody debris in this reach as a habitat improvement action and the REI indicates an “at risk” condition for this habitat element. The Dillwater ELJ structures are intended to create habitat by adding stream channel complexity elements, particularly for juvenile fishes, and to afford high-flow refugia. In addition, they would be effective at sediment storage which is needed to reduce lateral stream channel instability. USFWS data shows that a high local sediment supply (from upstream bank erosion), coupled with high width-to-depth ratios, has resulted in an enlarging channel and instability is exaserbated by limited riparian vegetation upstream.
|
|
General Area:
|
|
Chelan County
|
|
County:
|
|
Chelan
|
|
Legislative District:
|
|
12
|
|
Congressional District 2022:
|
|
08
|
|
Salmon Recovery Regions:
|
|
Upper Columbia River
|
|
Watershed Administrative Unit:
|
|
Middle Entiat
|
|
HUC8:
|
|
Upper Columbia-Entiat (17020010)
|
|
WRIA:
|
|
Entiat
|
|
Sections:
|
|
11
|
|
Township:
|
|
T27NR19E
|
|
Coordinates:
|
|
47.85985367
-120.42286590
|
|
|
| Worksite Name | Scope of Work | Actual Restoration Cost |
|
CDLT Property (#1)
|
Architectural & Engineering (A&E), Channel structure placement (C.4.d.1), Cultural resources, Obtain permits, Planting (C.5.c.1)
|
$345,884
|
| | Total | $345,884 |
Amounts may not be complete
| Worksite Name | | Property Name | Landowner Type |
|
CDLT Property (#1)
|
|
Property 1 - CDLT Dill Creek Property
|
Private
|
| | | | Total |
Amounts may not be complete
| | Category / Work Type / Metric | Final |
Restoration Metrics (rolled up from Worksite level) |
Instream Habitat Project |
| Channel structure placement (C.4.d.1) |
|
|
Miles of Stream Treated for channel structure placement (C.4.d.3)
|
0.30
|
|
|
Acres Of Streambed Treated for channel structure placement (C.4.d.4)
|
2.3
|
|
|
Pools Created through channel structure placement (C.4.d.5)
|
5
|
|
|
Number of structures placed in channel (C.4.d.7)
|
5
|
Riparian Habitat Project |
| Planting (C.5.c.1) |
|
|
Acres Planted in riparian (C.5.c.3)
|
1.5
|
Permits |
| Obtain permits |
|
|
Number of permits required for implementation of project
|
3
|
| Milestone Name | Target Date | Description |
|
Project Start
|
12/10/2010
|
|
|
Applied for Permits
|
03/31/2011
|
|
|
Preliminary Design to RCO
|
05/13/2011
|
|
|
Annual Project Billing Due
|
07/31/2011
|
|
|
Progress Report Due
|
07/31/2011
|
|
|
Landowner Agreement to RCO
|
08/01/2011
|
|
|
Bid Awarded/Contractor Hired
|
08/15/2011
|
|
|
Final Design to RCO
|
08/31/2011
|
|
|
Progress Report Due
|
12/31/2011
|
|
|
Cultural Resources Complete
|
06/29/2012
|
|
|
Permits Complete
|
07/16/2012
|
|
|
Restoration Started
|
07/16/2012
|
|
|
Annual Project Billing Due
|
07/31/2012
|
|
|
Progress Report Due
|
07/31/2012
|
|
|
Restoration Complete
|
12/31/2012
|
|
|
Progress Report Due
|
12/31/2012
|
|
|
Annual Project Billing Due
|
07/31/2013
|
|
|
Progress Report Due
|
07/31/2013
|
|
|
Final Report Due
|
12/31/2013
|
|
|
RCO Final Inspection
|
12/31/2013
|
|
|
Agreement End Date
|
12/31/2013
|
|
|
Final Billing Due
|
03/31/2014
|
|