OREGON (Cont. ) 



State Game Commission and U. S. Forest Service cooperating; west half 

 of State; began April 1952, indefinite; $4,000; Arthur S. Einarsen. Leader; 

 reports available. 



Address inquiries to: Oregon Cooperative Wildlife Research Unit, 325 Snell 

 Hall, Oregon State College, Corvallis, Oreg. 



7. A Study of Clear-cut Forest Stands in Relation to Game and Game Fish. 



The objective of the project is to learn the effect of logging in areas of virgin 

 timber stands on game and game fish. The project is an observational activity 

 on the Andrews Experimental Forest in the Blue River area of the Willamette 

 Forest east of Eugene, Oregon. The forest is being cut under controlled condi- 

 tions and the following studies are being carried out: (1) Temperature changes 

 in stream water due to logging, and its effect on fish directly and indirectly; 

 (2) logging effect on stream flows and sedinnentation; (3) land erosion; (4) effect 

 of road building and fires; (5) changes in vegetation; (6) terrestrial game use of 

 the cut over land and food changes. 



Based on the current plans, changes in logging practices can be invoked to 

 improve the experimental opportunities. Since the area had a good native stock 

 of game fishes ; particvdarly trout, it is an ideal experimental situation and can 

 influence the state of game fish in the heavy rain forest areas. 



State Game Commission and the U. S. Forest Service cooperating; Lane 

 County; hdqrs. Corvallis; began November 1951, continuing; $1, 000; Arthur S. 

 Einarsen, Leader; reports available. 



Address inquiries to: Cooperative Wildlife Research Unit, as in No. 6 above. 



State Sanitary Authority 



1. The Biological Measurennent of Recovery from Pollution in the Lower Willannette 

 and Columbia Rivers. 



This project is a study of the fish, bottom fauna and plankton in relation to 

 pollution in the Lower Willamette River. The dissolved oxygen or pollution 

 "block" to the passage of anadromous fish had been an annual occurrence in the 

 lower reach of the Willamette River for many years during the sunnmer low-flow 

 periods. Now that Portland and other communities and industries in the Willamette 

 Valley have undertaken a progrann of waste treatment, conditions in the River are 

 gradually improving. For the first time in years, the dissolved oxygen was main- 

 tained throughout the most critical period in the sunnmer of 1953. The major objec- 

 tive of the project is to measure the recovery and rehabilitation of the river from 

 a biological standpoint. In the past calendar year, the field work has been 

 expanded to include limited fish population studies. Physical and chemical re- 

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



U. S. Public Health Service, City of Portland, State College, cooperating; 

 Lower Willamette River (from above Portland to the Columbia River and in the 

 Columbia from above Vancouver, Washington, to a point about a mile below the 

 mouth of the Willamette River; began August 1951, indefinite; John N. Wilson, 

 Leader; reports available. 



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

 Oregon State Sanitary Authority, 1400 Southwest Fifth Avenue, Portland 1, Oreg. 



2. Investigation of Pollution from Gold Dredging Operations on the Powder River in 

 Northeastern Oregon. 



Effect of heavy turbidity and siltation was determined by physical and chennical 

 tests on the water, quantitative sampling of fish food organisms and fish population 

 studies. Starting with control stations on two of the principal headwater tributaries, 

 water analyses, stream bottom fauna collections, and fish population studies were 



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