Estimating the impacts of reservoir elevation changes on kokanee emergence in flaming Gorge Reservoir, Wyoming-Utah
North American Journal of Fisheries Management
By: T. Modde, R.J. Jeric, W.A. Hubert, and R.D. Gipson
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Abstract
Flaming Gorge Reservoir, like many western North American reservoirs, is managed to release water during the winter months to allow for water storage associated with melting snow and rain during spring. Decreases in reservoir elevation during winter can cause mortalities of kokanee Oncorhynchus nerka spawned along the shoreline the previous fall. This study compared data on depth distribution of embryos and depth-adjusted survival to estimate the relative survival of emergent kokanee at different depths and the effect of winter drawdown on the proportion of deposited eggs that survive to emergence. Estimates of decreases in kokanee survival to emergence were 8.3% and 38.1% for reservoir elevation reductions of 1.0 m and 5.0 m, respectively.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Estimating the impacts of reservoir elevation changes on kokanee emergence in flaming Gorge Reservoir, Wyoming-Utah |
| Series title | North American Journal of Fisheries Management |
| Volume | 17 |
| Issue | 2 |
| Year Published | 1997 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | North American Journal of Fisheries Management |
| First page | 470 |
| Last page | 473 |
| Google Analytic Metrics | Metrics page |