Analysis of the Potential for Boundary Release Flow-Through to Affect White Sturgeon Spawning/Incubation Success
Author: Waneta Expansion Power Corporation
This document examines further the potential for such flow-through to affect spawning and incubation, and reaffirms WEPC's original conclusion of no harm to white sturgeon. This Supplemental Analysis includes a proposed enhancement to the existing Waneta White Sturgeon Flow Augmentation Program, together with proposed monitoring and adaptive management measures.
Boundary Flow-through will have no effect on 95% of deposited eggs, negligible effect on 5% of deposited eggs, and will provide day-time velocity enhancements. Recruitment failure despite favourable flow velocities in most years. Field survey findings support model predictions of low predation. In conclusion, no significant negative effects on spawning/incubation.
Boundary Flow-through will have no effect on 95% of deposited eggs, negligible effect on 5% of deposited eggs, and will provide day-time velocity enhancements. Recruitment failure despite favourable flow velocities in most years. Field survey findings support model predictions of low predation. In conclusion, no significant negative effects on spawning/incubation.
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Additional Info
Study Years: 2007
Published: 2007
Analysis of the Potential for Boundary Release Flow-Through to Affect White Sturgeon Spawning/Incubation Success
Author: Waneta Expansion Power Corporation
Tags: Acipenser Transmontanus, Adaptive Management, Columbia River, Flow, Incubation, Monitoring Recommendation, Pend DOreille River, Spawning, Waneta Expansion Project, White Sturgeon
This document examines further the potential for such flow-through to
affect spawning and incubation, and reaffirms WEPC's original conclusion of no harm to white sturgeon. This Supplemental Analysis includes
a proposed enhancement to the existing Waneta White Sturgeon Flow Augmentation Program, together with proposed monitoring and adaptive management measures.
Summary
Boundary Flow-through will have no effect on 95% of deposited eggs, negligible effect on 5% of deposited eggs, and will provide day-time velocity enhancements. Recruitment failure despite favourable flow velocities in most years. Field survey findings support model predictions of low predation. In conclusion, no significant negative effects on spawning/incubation.