The stream originates in the Coast Range, and is 52 miles long. 

 The discharge in the year 1938 vies a ninimum of 3 c.f.s., on August 22, 

 and 14,000 c»f»s., on December 27. The water tem;)erature vras 59°-6l° F. 



The lovrer section of the stream is sluggish and heavily silted. 

 There is considerable s.avming area in the middle and upper sections. 



The South Yamhill is of little present value to salmon. 



25N-(3)a. Salt Creek . — (Inspected September 2F?, 19/!fO; Frey 



and Zimraer.) Enters the South Yamhill about 17 miles above the mouth. 



The stream course is about 30 miles long. Since it was dry at a point 



about 10 miles above the nouth it is believed to be ol' little possible 

 value to salmon. 



25N-(3)b. Deer Creek . — (inspected September 2B, 1940; Frey and 

 Zirnmer.) Enters the South Yamhill about 20 miles above the mouth. 

 The stream is about 18 miles long. The lower 10 miles of the course 

 is in a cultivated valley where the stream bed consists mainly of mud 

 and silt. At a point 10 miles above the nouth the stream was 20 feet 

 vilde, flovring 6-8 c.f.s., and the water temperature was 56° F. Above 

 this point the stream contains a large aranunt of bedrock and some 

 spawning rubble. The stream is of slight possible value to salmon. 



25N-(3)c. !lill Creek . — (inspected September 30, 1940 j Frey and 

 Zimner.) Enters the South Yamhill about 33 miles above the mouth. 

 The stream is about 25 miles long, and v/cis floT/ing 25 c.f.s., at a 

 point 6 miles above the mouth. The v/ater temperature was 56° - 64° ^' 

 The greater part of the stream course extends through a heavily wooded, 

 hilly section, although logging operations vrere being carried on in 

 the headwaters. The stream bed contains a large amount of bedrock, but 

 also contains some good spawning area. The stream appears to have 

 possibilities for the production of salmon and trout. 



A triViutary, Ciooseneck Creek entering 3 miles upstream, is about 

 7 miles long and ?ias some additional sjjavj-ning area. 



25N-(3)d. Vfillamina Creek .— (October 2-4, 1945; Brewington, 

 Davis, and Johanson.) Enters the South Yamhill about 35 miles above 

 the mouth. The stream is about 20 miles long, of wliich the lower 10 

 miles were surveyed up to an impassable falls 10 feet high. The dis- 

 charge ivas 15 c.f.s., at the time of survey. The maximum discharge of 

 record was 5,720 c.f.s., on December 27, 1937, and the minimum has 

 been 9 c.f.s,, on several occasions in August and September. The water 

 temperature was 48° - 54° F. 



There is a 16-foot high power dam of the i^ortland General Electric 

 ConiJany located l|- miles above the mouth. The fishway at the dam v;as 

 badly in need of repairs and maintenance. 



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