log jam above Dollar, although they have great difficulty in passing 

 the Finley Mill Dam. 



There are numerous small, steep tributaries, none of which are 

 believed to be of any value to salmon spawners, vxth the possible ex- 

 ception of Brush Creek , #iich enters at Crawfordsville, was discharg- 

 ing 6 c.f.s., and may have a small amount of spavming area. 



25W-y. Bowers Slough , Dead River (and Owl Creek ) , and Dixon 

 Creek are all small streams on the V/illamette Valley floor and enter- 

 ing the Willamette River between the Calapooya and Marys River. None 

 of them are of value to salmon. 



25Z. Marys River . — (inspected August 30, 1945; i^arkhurst, Hanavan, 

 Silliman, and Brewington.) Enters the V/illamette River approximately 

 127 miles above the mouth, at Corvallis, Oregon. The stream is about 

 4-0 miles long, rising in the Coast Range. The flovi near Philomath, 

 about 10 miles upstream, ranged from a minimum of 6 c.f.s., on September 

 12-13, 19-^- to a maximum of 7,720 c.f.s., on January 1, 1943. The 

 stream is extremely low during the summer. 



A lumber mill dam just above the mouth is 4 feet high with an 

 apron extending 34 feet downstream, and is impassable at low water. The 

 stream is polluted by savmiill waste in the vicinity of the dam. 



The gradient is slight in the lower 15 miles and the stream bed is 

 composed of mud and clay. In the upper hilly section the stream bed is 

 composed mainly of bedrock or large rubble and silt. Due to the general 

 lack of spa-vming area the stream is of little possible value to salmon, 

 and no salmon have been reported. 



25AA. Muddy Creek . — ^Enters the Willamette River via East Channel 

 approximately 129 miles above the mouth. The stream is about 25 miles 

 long, and meanders across the Vifillamette Valley floor. The stream bed 

 is composed mainly of mud and silt. Since it is of no value to salmon 

 it. was not survej'ed. 



25BB. Long Tom River . — (Inspected June 11-13, 1938j Parkhurst and 

 Wilding.) Enters the Willamette River approximately 140 miles above 

 the mouth. The stream is about 48 miles long. The stream is blocked 

 by the 35 foot high Fern Ridge flood control dam completed by the U, S. 

 Army Engineers in 1942, and located 15 miles upstream. The stream bed 

 below the dam consists mainly of mud and silt, and is valueless to migra- 

 tory fish. In this section the gradient is slight and summer water tem- 

 peratures are high. Before the dam was built the minimum discharge was 

 7 c.f.s., and since regulation it is occasionally zero at the dam. The 

 maximum recorded discharge was 19,300 c.f.s., on January 2, 1943. 



No facilities are provided for the passage of fish at the dam as 

 the stream never was of any value for anadroraous fish. 



59 



