A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Monitoring of downstream salmon and steelhead trout at federal hydroelectric facilities, annual report 1999
1999 marked the second year of sampling in the new Smolt Monitoring Facility (SMF) at John Day Dam. A new high for sample numbers was established in 1999 due to The Dalles Dam spillway survival study collecting fish for PIT tagging from our samples. Collection and index numbers roughly doubled for yearling and subyearling chinook and were about a third higher for hatchery steelhead. Descaling and mortality rates were similar to or lower than last year for all species due in large part to excellent migration conditions in 1999. Flows were manageable and debris was light. Dissolved gas levels were generally below the Oregon and Washington water quality standards. Migration duration was longer this year for all species except for subyearling chinook and sockeye. The PIT tag detection aspect of the facility performed well again this year. Total detections were 138,705, up from 49,615 detections last year. The Separation by Code component of the system also worked well being utilized by 3 studies.
Monitoring of downstream salmon and steelhead trout at federal hydroelectric facilities, annual report 1999
1999 marked the second year of sampling in the new Smolt Monitoring Facility (SMF) at John Day Dam. A new high for sample numbers was established in 1999 due to The Dalles Dam spillway survival study collecting fish for PIT tagging from our samples. Collection and index numbers roughly doubled for yearling and subyearling chinook and were about a third higher for hatchery steelhead. Descaling and mortality rates were similar to or lower than last year for all species due in large part to excellent migration conditions in 1999. Flows were manageable and debris was light. Dissolved gas levels were generally below the Oregon and Washington water quality standards. Migration duration was longer this year for all species except for subyearling chinook and sockeye. The PIT tag detection aspect of the facility performed well again this year. Total detections were 138,705, up from 49,615 detections last year. The Separation by Code component of the system also worked well being utilized by 3 studies.
Monitoring of downstream salmon and steelhead trout at federal hydroelectric facilities, annual report 1999
R. D. Martinson (author)
2000
82 pages
Report
No indication
English
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