Hydroacoustic Assessment of Downstream Migrating Salmonids at the Dalles Dam in Spring and Summer, 1985 Final Report.
- BioSonics, Inc. Seattle, WA
A hydroacoustic study of downstream migrating salmon and steelhead was conducted at The Dalles Dam. The primary objective was to estimate the effectiveness of the spillway and sluiceway in passing downstream migrants. The secondary goals were to provide information on the horizontal, vertical, and temporal distributions of downstream migrants. June 1, and the summer season was from July 1 to August 15, 1985. Nineteen transducers were deployed to monitor turbine, spillway, and sluiceway locations. The 10 h instantaneous spill effectiveness results showed that spill passed fish more efficiently during the summer study than during the spring study. During the period May 1-31 when the turbines, spillway, and sluiceway were all operating consistently, the sluiceway was found to be the most efficient method of passing fish on a percent flow basis. During the summer study, after the termination of spill, the sluiceway and turbines passed almost equal percentages of fish. The run timing during the spring showed steadily increasing numbers of fish until the peak of the run on May 16. Another, smaller peak occurred on May 20. Thereafter, passage gradually decreased through the end of the spring study. The spring run consisted of yearling chinook, steelhead and sockeye juvenile salmonids. During the summer study, fish passage gradually decreased, except for minor peaks near the beginning of the study. The summer migration consisted primarily of subyearling chinook juvenile salmonids.
- Research Organization:
- BioSonics, Inc.
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 198508300
- OSTI ID:
- 5618967
- Report Number(s):
- DOE/BP-23174-2; ON: DE86011378
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydroacoustic Evaluation of Overwintering Summer Steelhead Fallback and Kelt Passage at The Dalles Dam, 2009-2010
Migratory Behavior and Survival of Juvenile Salmonids in the Lower Columbia River, Estuary, and Plume in 2010
Related Subjects
ANADROMOUS FISHES
MIGRATION
COLUMBIA RIVER
DAMS
FISH PASSAGE FACILITIES
ACOUSTIC MONITORING
EXPERIMENTAL DATA
JUVENILES
ANIMALS
AQUATIC ORGANISMS
DATA
FISHES
INFORMATION
MONITORING
NUMERICAL DATA
RIVERS
STREAMS
SURFACE WATERS
VERTEBRATES
Fishes - Migration - Columbia River
Underwater acoustics
130600* - Hydro Energy- Environmental Aspects