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https://hdl.handle.net/11681/44285| Title: | Lower Granite Reservoir Biological Monitoring at 2015 Disposal Site : 2018–2020 Final Report of Research |
| Authors: | Hemingway, Rulon J. Tiffan, Kenneth F. |
| Keywords: | Dredging Dredging spoil Reservoirs Salmon Lower Granite Lake (Wash. and Idaho) |
| Publisher: | United States. Army. Corps of Engineers. Walla Walla District. |
| Abstract: | The U.S. Army Corps of Engineers (COE) has a long-term management plan for sediments that affect the authorized project purposes of the Lower Granite, Little Goose, Lower Monumental, and Ice Harbor reservoirs (hereafter, the lower Snake River reservoirs), and the area from the mouth of the Snake River to Ice Harbor Dam. As part of this plan, sediments (i.e., suitable dredge materials) may be used to create habitat for juvenile salmonids. In 2015, the COE completed a sediment placement at Knoxway Bench on Lower Granite Reservoir (LGR) near RM 119 with sandy material dredged from the federal navigation channel in the Lower Granite Reservoir. The objective of this study was to document current biological and physical characteristics of the 2015 dredge material located at the Knoxway Bench Lower disposal site with emphasis on describing use of shallow-water habitat designed for use by juvenile salmonids. The study was conducted from December 2018 through January 2020 to describe seasonal use of this placement site by juvenile Chinook salmon and other species in Lower Granite Reservoir. |
| Description: | Technical Report |
| Rights: | Approved for Public Release; Distribution is Unlimited |
| URI: | https://hdl.handle.net/11681/44285 |
| Size: | 136 pages / 5.53 MB |
| Types of Materials: | PDF/A |
| Appears in Collections: | Technical Reports |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Lower Granite Reservoir Biological Monitoring at 2015 Disposal Site - 2021.pdf | 5.53 MB | Adobe PDF |  View/Open |