Peshastin Irrigation Pump Exchange Design
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Chelan Co Natural Resource; Peshastin Irrigation Pump Exchange Design (#16-1787)
Attachment #275643, Peshastin Creek
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Chelan County will use these funds to work with the Peshastin Irrigation District (PID) to complete preliminary designs for a proposed pump exchange facility that would deliver up to 30 cubic feet per second (cfs) from the Wenatchee River to the Peshastin Irrigation District Canal during late summer critical low flow period. This would allow for a corresponding reduction in diversions from Peshastin Creek, thus increasing instream flow to the lower 2.4 miles of Peshastin Creek and a portion of the Wenatchee River. Increased instream flows in lower Peshastin Creek during the late summer critical low flow period would improve passage conditions for Chinook salmon and bull trout, improve spawning habitat for Chinook salmon, and improve rearing habitat for Chinook salmon, bull trout, and steelhead. An appraisal study was prepared in 2012 to evaluate alternatives for pumping water from the Wenatchee River to the PID Canal. A preferred alternative (Alternative 1) was selected and is the alternative being proposed here. Peshastin Creek is a Priority 2 area with a major spawning population of steelhead, a minor spawning population of Spring Chinook, and a core area for bull trout. The priority action for lower Peshastin Creek is to increase instream flows.
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County:
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Chelan
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Legislative District:
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12
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Congressional District 2022:
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08
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Salmon Recovery Regions:
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Upper Columbia River
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Watershed Administrative Unit:
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Lower Wenatchee
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HUC8:
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Wenatchee (17020011)
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WRIA:
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Wenatchee
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Sections:
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27
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Township:
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T24NR18E
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Coordinates:
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47.54104965
-120.56630729
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Amounts may not be complete
| | Category / Work Type / Metric | Final |
Restoration Metrics (rolled up from Worksite level) |
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Area Encompassed (acres) (B.0.b.1)
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0.5
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Miles of Stream and/or Shoreline Affected (B.0.b.2)
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2.40
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| Milestone Name | Target Date | Description |
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Project Start
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12/07/2016
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RFP Complete/Consultant Hired
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01/30/2017
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Data Gathering Started
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04/15/2017
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Progress Report Due
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07/31/2017
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Annual Project Billing Due
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07/31/2017
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Progress Report Due
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12/31/2017
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Cultural Resources Complete
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09/15/2018
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Monitoring of geotech activities required.
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Progress Report Due
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11/15/2020
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Draft Design to RCO
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02/26/2021
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Draft Conceptual Design (Manual 18, Appendix D-1)
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Agreement End Date
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03/31/2021
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Special Conditions Met
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03/31/2021
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Final Design to RCO
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03/31/2021
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Final Conceptual Design (Manual 18, Appendix D-1)
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Final Report Due
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04/30/2021
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Final Billing Due
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04/30/2021
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