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Redd Dewatering Monitoring and Assessment on the Sacramento River

Redd Dewatering Monitoring and Assessment on the Sacramento River. What is redd dewatering?. Conditions that cause redd dewatering?. Dewatering Monitoring and Assessment . Study Question.

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Redd Dewatering Monitoring and Assessment on the Sacramento River

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  1. Redd Dewatering Monitoring and Assessment on the Sacramento River

  2. What is redd dewatering? Conditions that cause redd dewatering? Dewatering Monitoring and Assessment

  3. Study Question What percentage of fall-run redds are being dewatered while eggs and fry are still in the gravel?

  4. Keswick Dam STUDY AREA Sacramento River Redding to Los Molinos About 70 miles of River Redding 5 Anderson 5 Bend Red Bluff N 5 Los Molinos

  5. Sacramento River Fall-run Spawning Life History Fall-run Spawning Eggs and Fry in Gravel - 60 to 90 days Oct Nov Dec Jan Feb Mar

  6. Flow

  7. COMPETING DEMANDS ON SHASTA LAKE WATER Water Supply Delivery/Storage Winter-Run Cold Water Pool Flood Management Fall-Run Spawning

  8. Keswick Reservoir Release Fall 2011 – Winter 2012 9,000 7,500 CFS 6,000 3,372 4,500 3,000 30-Sep 30-Oct 30-Nov 30-Dec 30-Jan Eggs and Fry in Gravel - 60 to 90 days

  9. Keswick Reservoir Release Fall 2009 – Winter 2010 9,000 7,500 CFS 6,000 3,250 4,500 3,000 30-Sep 30-Oct 30-Nov 30-Dec 30-Jan Eggs and Fry in Gravel - 60 to 90 days

  10. Keswick Reservoir Release Fall 2006 – Winter 2007 9,000 7,500 CFS 6,000 4,500 3,000 30-Sep 30-Oct 30-Nov 30-Dec 30-Jan Eggs and Fry in Gravel - 60 to 90 days

  11. Monitoring and Assessment Ground/Boat Based redd survey Mark and record accurate location of redd Record when redd was created Fall-run Spawning Oct Nov Dec Jan Feb Mar

  12. DURING LOW-FLOW PERIODS Record dewatered redds and state of dewatering Map dewatered spawning areas Eggs and Fry in Gravel - 60 to 90 days Oct Nov Dec Jan Feb Mar

  13. 2011-2012 DFG Survey Dewatered Redds Fall-run Spawning Eggs and Fry in Gravel - 60 to 90 days Oct Nov Dec Jan Feb Mar

  14. Area Subject to Dewatering Mapped 2009/2010

  15. Fall-run Redds Mapped 2011/2012 Area Subject to Dewatering Mapped 2009/2010

  16. Topographic Survey to Determine Stage/Discharge Relationship

  17. What’s next?

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