Evaluation of the Effectiveness of an Orifice Shelter at McNary Dam, Columbia River, 1999: Fid-Bau Portal

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Evaluation of the Effectiveness of an Orifice Shelter at McNary Dam, Columbia River, 1999

M. H. Gessel / B. P. Sandford / J. W. Ferguson

During the 1999 spring and summer juvenile salmonid outmigrations, we evaluated an orifice shelter at McNary Dam (Columbia River) by conducting orifice passage efficiency (OPE) tests and descaling evaluations. These tests were conducted in Turbine Units 3 and 4. Test units were equipped with extended-length submersible bar screens (ESBS), partially raised operating gates, and inlet flow vanes. Dip-basket efficiency tests were also conducted. We tested the orifice shelter from 1 May through 2 June for yearling and from 4 June through 16 July for subyearling chinook salmon (Oncorhynchus tshawytscha).

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Evaluation of the Effectiveness of an Orifice Shelter at McNary Dam, Columbia River, 1999

M. H. Gessel / B. P. Sandford / J. W. Ferguson

During the 1999 spring and summer juvenile salmonid outmigrations, we evaluated an orifice shelter at McNary Dam (Columbia River) by conducting orifice passage efficiency (OPE) tests and descaling evaluations. These tests were conducted in Turbine Units 3 and 4. Test units were equipped with extended-length submersible bar screens (ESBS), partially raised operating gates, and inlet flow vanes. Dip-basket efficiency tests were also conducted. We tested the orifice shelter from 1 May through 2 June for yearling and from 4 June through 16 July for subyearling chinook salmon (Oncorhynchus tshawytscha).

Evaluation of the Effectiveness of an Orifice Shelter at McNary Dam, Columbia River, 1999

M. H. Gessel / B. P. Sandford / J. W. Ferguson

During the 1999 spring and summer juvenile salmonid outmigrations, we evaluated an orifice shelter at McNary Dam (Columbia River) by conducting orifice passage efficiency (OPE) tests and descaling evaluations. These tests were conducted in Turbine Units 3 and 4. Test units were equipped with extended-length submersible bar screens (ESBS), partially raised operating gates, and inlet flow vanes. Dip-basket efficiency tests were also conducted. We tested the orifice shelter from 1 May through 2 June for yearling and from 4 June through 16 July for subyearling chinook salmon (Oncorhynchus tshawytscha).

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Title:

Evaluation of the Effectiveness of an Orifice Shelter at McNary Dam, Columbia River, 1999

Contributors:

M. H. Gessel (author) / B. P. Sandford (author) / J. W. Ferguson (author)

Publication date:

2000

Size:

24 pages

Type of media:

Report

Type of material:

No indication

Language:

English

Keywords:

Hydrology & Limnology , Fisheries & Aquaculture , Ecology , Orifice shelter , McNary Dam , Columbia River , Outmigrations , Juvenile salmon , Fisheries , Tests , Evaluation , Effectiveness , Extended-length bar screens(ESBS) , Orifice passage efficiency (OPE)

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