This project separated the Ellensburg Water Company Canal water from Cooke Creek water, separating irrigation flow from natural creek flow. The improvement prevents the entrainment of aquatic life into the irrigation canal with the addition of a WDFW / NMFS criteria fish screen on the creek diversion. Grade improvements were provided to remove an existing upstream fish passage barrier in Cooke Creek, allowing upstream fish migration past the old diversion site. Water quality in the creek will improve with the removal of canal sediments and agricultural pollutants. Water quantities (in-flow) will increase in Cooke Creek and will be more easily monitored in the stream and the canal. A new flow measurement flume was rovided on the creek diversion to monitor flows.
This project was identified as a priority Early Action Project by the YTAHP core team, and had funding authorization from the BPA and EWC.
For pictures and more information, go to Cooke Creek Siphon Project.
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