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Title: Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008

Abstract

The overall goal of the project described in this report is to provide a sound scientific basis for operation of the Federal Columbia River Power System (FCRPS) in ways that will effectively protect and enhance chum salmon populations - a species listed in March 1999 as threatened under the Endangered Species Act of 1973 (ESA). The study objective during fiscal year 2008 was to provide real-time data on Ives Island area water temperature and water surface elevations from the onset of chum salmon spawning through the end of chum salmon emergence. Sampling locations included areas where riverbed temperatures were elevated, potentially influencing alevin development and emergence timing. In these locations, hydrosystem operation caused large, frequent changes in river discharge that affected salmon habitat by dewatering redds and altering egg pocket temperatures. The 2008 objective was accomplished using temperature and water-level sensors deployed inside piezometers. Sensors were integrated with a radio telemetry system such that real-time data could be downloaded remotely and posted hourly on the Internet. During our overall monitoring period (October 2007 through June 2008), mean temperature in chum spawning areas was nearly 2 C warmer within the riverbed than in the overlying river. During chum salmon spawning (mid-Novembermore » 2007 through December2007), mean riverbed temperature in the Ives Island area was 14.5 C, more than 5 C higher than in the river, where mean temperature was 9.4 C. During the incubation period (January 2008 through mid-May 2008), riverbed temperature was approximately 3 C greater than in the overlying river (10.5 C and 7.2 C, respectively). Chum salmon preferentially select spawning locations where riverbed temperatures are elevated; consequently the incubation time of alevin is shortened before they emerge in the spring.« less

Authors:
 [1]
  1. Pacific Northwest National Laboratory
Publication Date:
Research Org.:
Bonneville Power Administration (BPA), Portland, OR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
963881
Report Number(s):
P112460; PNNL-18561
R&D Project: 1999-003-01; TRN: US200919%%165
DOE Contract Number:  
26934 REL 18
Resource Type:
Technical Report
Resource Relation:
Related Information: document dated July 2009
Country of Publication:
United States
Language:
English
Subject:
13 HYDRO ENERGY; COLUMBIA RIVER; ENDANGERED SPECIES; HABITAT; INCUBATION; INTERNET; MONITORING; POWER SYSTEMS; RIVERS; SALMON; SAMPLING; TELEMETRY; WATER; WATER REMOVAL

Citation Formats

Arntzen, E V. Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008. United States: N. p., 2009. Web. doi:10.2172/963881.
Arntzen, E V. Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008. United States. https://doi.org/10.2172/963881
Arntzen, E V. 2009. "Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008". United States. https://doi.org/10.2172/963881. https://www.osti.gov/servlets/purl/963881.
@article{osti_963881,
title = {Temperature and Water Depth Monitoring Within Chum Salmon Spawning Habitat Below Bonneville Dam : Annual Report October 2007-September 2008},
author = {Arntzen, E V},
abstractNote = {The overall goal of the project described in this report is to provide a sound scientific basis for operation of the Federal Columbia River Power System (FCRPS) in ways that will effectively protect and enhance chum salmon populations - a species listed in March 1999 as threatened under the Endangered Species Act of 1973 (ESA). The study objective during fiscal year 2008 was to provide real-time data on Ives Island area water temperature and water surface elevations from the onset of chum salmon spawning through the end of chum salmon emergence. Sampling locations included areas where riverbed temperatures were elevated, potentially influencing alevin development and emergence timing. In these locations, hydrosystem operation caused large, frequent changes in river discharge that affected salmon habitat by dewatering redds and altering egg pocket temperatures. The 2008 objective was accomplished using temperature and water-level sensors deployed inside piezometers. Sensors were integrated with a radio telemetry system such that real-time data could be downloaded remotely and posted hourly on the Internet. During our overall monitoring period (October 2007 through June 2008), mean temperature in chum spawning areas was nearly 2 C warmer within the riverbed than in the overlying river. During chum salmon spawning (mid-November 2007 through December2007), mean riverbed temperature in the Ives Island area was 14.5 C, more than 5 C higher than in the river, where mean temperature was 9.4 C. During the incubation period (January 2008 through mid-May 2008), riverbed temperature was approximately 3 C greater than in the overlying river (10.5 C and 7.2 C, respectively). Chum salmon preferentially select spawning locations where riverbed temperatures are elevated; consequently the incubation time of alevin is shortened before they emerge in the spring.},
doi = {10.2172/963881},
url = {https://www.osti.gov/biblio/963881}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 14 00:00:00 EDT 2009},
month = {Tue Jul 14 00:00:00 EDT 2009}
}