|Document Type:||Contract Report|
|Title:||Portland Harbor pre-dredge and disposal study|
|Author/Editor:||Theodore H. Blahm, Joseph T. Durkin, Robert J. McConnell, Lawrence G. Davis, Travis C. Coley|
|Publisher:||National Marine Fisheries Service|
|Contracting Agency:||U.S. Army Corps of Engineers. Portland, Oregon|
The Portland Harbor study proposal specified three data collection efforts: before, during, and after disposal of dredged material (from the Willamette River) at Columbia River mile 101. Each effort was to include benthic invertebrate counts, general water quality, finfish abundance, and analysis of fish stomach contents.
A preliminary survey was conducted on 15, 16, and 17 May 1978. Subsequently the overall study was cancelled because the Washington State Department of Ecology would not grant the required permits.
This report outlines data collected during the preliminary survey. Water quality data are minimal because that particular portion of the sampling was to be done 1-2 d prior to the disposal operation, which did not occur. Based on preliminary collections, we concluded the following: