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Analysis of bottom material from the Willamette River, Portland Harbor, Oregon

Open-File Report 77-740

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Abstract

The bottom material of the Willamette River, Portland Harbor, Oregon, was sampled in duplicate on February 1, 1977. Results are reported on the following analyses of the material: immediate and long-term oxygen demand; particle size; percent moisture; residue, loss on ignition; and chemical. The U.S. Geological Survey (USGS), in cooperation with the U.S. Army Corps of Engineers, Portland District (Corps), collected and analyzed duplicate samples of bottom material from Portland Harbor. The analyses were selected jointly by the Corps and USGS and include chemical, oxygen-demand, and particle-size analyses of the bottom material. The National Maine Fisheries Service (NMFS) indicated that, at present, the Columbia River downstream from Bonneville Dam receives very little organic material. The bottom material is 5 to 8 percent organic, and NMFS indicated that this material could stimulate the Columbia River aquatic system, with the dumping sites serving as feeder sites for aquatic organisms. (Woodard-USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Analysis of bottom material from the Willamette River, Portland Harbor, Oregon
Series title:
Open-File Report
Series number:
77-740
Edition:
-
Year Published:
1977
Language:
ENGLISH
Publisher:
U.S. Geological Survey,
Description:
iv, 8 p. ;27 cm.; (10 p. - PGS)