OREGON (Cont. ) 

 Oregon State College 



1. The Willamette River Fishes and Fish Food Organisms as Biological Indicators of 

 Pollution. 



The seasonal distribution of the fishes of the Willamette and three major tributaries 

 is being studied in relation to fish food organisms present at 12 separate collecting 

 stations, with the view of using fishes and their stomach contents as indicators 

 of pollution. There is good indication that absence or presence of certain species 

 of fishes can be used as biological indicators of pollution or non-pollution, and 

 that the stomach contents are fairly indicative of the aquatic insect groups impor- 

 tant in bioindices evaluations. 



Willamette River, including three tributaries- -the Clackamas, McKenzie and S. F. 

 of the Santiam River; Ore. State Sanitary Authroity, Portland, cooperating; began 

 July 1951, to be completed in June 19153; $6,000; limited number reports at the 

 Ore. State Sanitary Authority, Portland, and at Ore. State College. 



Address correspondence to: R. E. Dimick, Dept. of Fish and Game Mgt. , Ore. 

 State College Corvallis, Ore. 



Oregon State Sanitary Authority 



1. The Biological Measurement of Recovery from Pollution in the Lower Willamette 

 and Columbia. 



This is a study of the bottom fauna and plankton in relation to pollution ir. the Lower 

 Willamette River and in the Columbia River. A major objective of the project is 

 to measure the recovery and rehabilitation of the stream fronn the biological stand- 

 point. Fish population studies are being undertaken and correlated with continu- 

 ing results of bottona fauna and plankton determinations. Physical and chemical 

 results are provided by the City of Portland, Department of Public Works. 



Lower Willannette River from abo"e Portland to the Columbia River and in the 

 Columbia River from above Vancouver, Wash. , to a point about a mile below 

 the mouth of the Willamette River; beg?.n August 1951, indefinite; J. N. Wilson, 

 Project Leader; interim report covering period from Fall 1951 through March 195Z 

 has been prepared. 



Address correspondence to: Mr. C. M. Everts, Jr. , Secretary and Chief Engineer, 

 Ore. State Sanitary Authority, State Office Bldg. , Portland 1, Ore. 



U. S. Forest Service 



1. Sedimentation Studies. 



Twenty stations were established in Oregon and Washington to study the amount of 

 sedimentation in such streams as the Methow, Burnt River, Wallowa, Rogue 

 River, Umpqua, etc. The work was done by rangers and the water analyzed for 

 sediment content. Some rather startling figures were obtained. As an example, 

 road construction increased the sediment content of the waters of the Umpqua River 

 in 1949 to five times what it had been in 1945 and 1946. 



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