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Pre-Dam Removal Monitoring of Goldsborough Creek, Washington: 2000 Smolt Trapping Study
Trapping of salmonid (oncorhynchus spp.) smolts was conducted as part of the monitoring plan for the Goldborough Creek, Washington, dam removal and stream restoration project headed by the U.S. Army Corps of Engineers. The aim of the current year's monitoring is to provide data on existing use of the watershed by salmonids prior to dam removal. These data will be assessed with data from other years to allow pre and post-removal comparisons, and thus facilitate evaluation of the effect dam removal has on naturally reproducing salmonid populations. The 2000 smolt trapping study represents the first pre-removal collection of salmonid smolt data affiliated with the removal and restoration. A primary goal of the dam removal project is to enhance access of spawning salmonids to habitat currently above the dam. This study used smolt trapping rather than spawner surveys to evaluate any improvement in access since spawner surveys can be unreliable particularly with respect to coho salmon. If smolt trapping data show a post-removal increase in proportion of smolts originating from the upper watershed, it might be concluded that dam removal enhaced adult access to the upper wahtershed. As such, the 2000 study: provides data on smolt production above the dam relative to production for the entire watershed; and offer preliminary conclusions on restrictions imposed by the dam on access to upper watershed habitat, which will be further evaluated with future pre- and post removal studies. In addition, as part of estimating relative production from the upper watershed, potential mortality to smolts caused by passing over the dam spillway was assessed.
Pre-Dam Removal Monitoring of Goldsborough Creek, Washington: 2000 Smolt Trapping Study
Trapping of salmonid (oncorhynchus spp.) smolts was conducted as part of the monitoring plan for the Goldborough Creek, Washington, dam removal and stream restoration project headed by the U.S. Army Corps of Engineers. The aim of the current year's monitoring is to provide data on existing use of the watershed by salmonids prior to dam removal. These data will be assessed with data from other years to allow pre and post-removal comparisons, and thus facilitate evaluation of the effect dam removal has on naturally reproducing salmonid populations. The 2000 smolt trapping study represents the first pre-removal collection of salmonid smolt data affiliated with the removal and restoration. A primary goal of the dam removal project is to enhance access of spawning salmonids to habitat currently above the dam. This study used smolt trapping rather than spawner surveys to evaluate any improvement in access since spawner surveys can be unreliable particularly with respect to coho salmon. If smolt trapping data show a post-removal increase in proportion of smolts originating from the upper watershed, it might be concluded that dam removal enhaced adult access to the upper wahtershed. As such, the 2000 study: provides data on smolt production above the dam relative to production for the entire watershed; and offer preliminary conclusions on restrictions imposed by the dam on access to upper watershed habitat, which will be further evaluated with future pre- and post removal studies. In addition, as part of estimating relative production from the upper watershed, potential mortality to smolts caused by passing over the dam spillway was assessed.
Pre-Dam Removal Monitoring of Goldsborough Creek, Washington: 2000 Smolt Trapping Study
M. T. Celedonia (Autor:in) / R. J. Peters (Autor:in) / B. R. Missildine (Autor:in)
2001
38 pages
Report
Keine Angabe
Englisch
Fisheries & Aquaculture , Natural Resource Management , Dam , Removal , Monitoring , Fishes , Watershed , Habitat , Cocho salmon , Smolts , Evaluation , Trapping , Spawning , Fish populations , Surveys , Restoration , Mortality , Spillways , Assessment , Salmonid(oncorhynchus spp) , Goldsborough creek(Washington) , U.S. army corps of engineers
Goldsborough Creek Smolt Trapping Study, 2001
| NTIS | 2001
| British Library Conference Proceedings | 2005