dam, 6 feet high, and provided with an adequate fishway« The third is 

 the Ankeny dam ,6 feet high,TO.th a broken doim fishway* It is reported 

 that steelhead easily pass this dam during high -water, but it is a low 

 •water barrier. The fourth is the Brehm dam. Us feet high, with two 

 fishways, only one of which is of sufficient size to be usable by large 

 fisho Steelhead can jump the face of this dam during high water stages. 



No salmon have been seen in Yellowhawk creek for years, and at 

 the present time, only a few steelhead trout enter and pass into Mill 

 creek. In its present state YelloTjhawk creek is practically worthless 

 to these fish. 



5K-(1). Cottonwood Creek , 5K-(2), Reser Creek , and 5K-(3). Russell 

 Creek.--^ J\ine 21, 1935 J Burrows. ) These are small intermittent tributaries 

 of Yellowhawk creek that are of no value to salmon. Their entire flows are 

 diverted for irrigation. 



5L. Birch Creek. — (April 22, 1937; B\irrows and TOiiteleather.) Enters 

 the Walla Walla river at the Oregon-Washington state line. At the time of 

 survey the discharge was estimated at about ^ c.f.s., and it is reported 

 that the stream becomes almost dry during the summer* It is a slow flow- 

 ing stream with a stream bed composed almost entirely of mud. It is of 

 no value to salmon or steelhead trout. 



5M. Couse Creek . — (April 22, 1937j Burrows and Whiteleather. ) 

 Enters the Walla Walla River near Milton, Oregon. This stream is too 

 small to be of importance to fish although it is reported that a few 

 steelhead trout continue to enter. 



5N. North Fork Walla Walla River .— (June 22, 1935, and June 22-25, 

 1936 J Burrows & Whiteleather.) Joins the south fork to form the main 

 Walla Walla River $6 miles above the mouth* The stream is about 17 miles 

 long and was surveyed upstream for a distance of 11.7 miles. The s\irvey 

 was terminated at this point because the stream above was too small and 

 lacked suitable salmon spaiwiing area. The average width near the mouth 

 was about 30 feet and near the terminus of svirvey about 7 feet. The es- 

 timated discharge was 13»5 c.f.s. This stream has excellent, suitable 

 spawning areas estimated to total 100,000 square yards, or approximately 

 66 percent of the stream bed. Resting pools are numerous in the lower 

 stream section. There are nine small unscreened irrigation diversions 

 carrying a maximum total of 7 c.f.s. Small, temporary dams are placed 

 across the stream in connection with each of the diversions, usually about 

 the middle of May. All of them are easily passable to fish during high 

 water stages, but four may be barriers during low water. The dams and 

 diversions are located in the first U-mile section above the mouth. 

 There are no natural barriers, and no sources of pollution. 



An occasional steelhead trout is taken from this stream, but no 

 salmon have been seen or reported for majiy years. Conditions are excel- 

 lent for both salmon and steelhead, but the anadromous fishery \alue is 



37 



