Above Little Cracker Creek the gradient increases rapidly, 

 and the stream acquires a torrential velocity which renders it 

 unsuitable for salmon spawning. The stream has its source near the 

 suraoit of the Blue Mountains at an elevation of more than 7,000 feet. 



Although Cracker Greek is at present wholly inaccessible to 

 salmon and steelhead because of obstructions in the Powder River, 

 it has good potential value, particularly for steelhead trout. 



Several small, very steep, turbulent streams, which are of 

 no possible value to salmon, enter the lower portion of Cracker Creek* 



6M-(1). Pole Creek. — Enters about 3 miles above the mouth and 

 was discharging less than 5 c.f.So 



6M-(2), Slim Creek . — Enters 3 miles above the mouth and was 

 discharging less than 2 c.f.So 



6M-(3), Wind Creek , — Enters 3| miles above the mouth and was 

 discharging less than 5 c,f,s, 



6M-(ii). Silver Creek .— (July 2, 19^2 ; Parkhiirst.) Silver 

 Creek enters Cracker Creek approximately 5 miles above the mouth. 

 It is about 6 miles long, of which the lower 2 miles appeared some- 

 what suitable for salmon spawning. 



In this lower section the stream had an average width of 2U 

 feet, and was discharging about 50 c.f .s. The water temperature was 

 50 F, The gradient is too steep for the best type of salmon spawning 

 area© Medium and small rubble in numerous small pools and riffles 

 make up a large part of the stream bed. It is estimated that about 

 30 percent of the bottom in this section constitutes suitable spawn- 

 ing area. In the upper section the gradient becomes too steep for 

 the stream to be of any possible value to salmon. Although inacces- 

 sible at present. Silver Creek has some potential value, particularly 

 for steelhead trout, 



6m-(5). Little Cracker Creek .— (July 2, 19h2j Parkhurst,) 

 Little Cracker Creek enters Cracker Creek at the village of Bourne, 

 approximately 6^ miles above the mouth. It is a small stream, about 

 2 miles long, and discharging about 5 c.f .s. The first mile above 

 the mouth contains some suitable salmon spawning area. Because of 

 its small size. Little Cracker Creek was considered of slight poten- 

 tial value to salmon. 



6n. McCully Fork ,— (July 2, 19U2; Parkhurst.) McCully Fork 

 enters the Powder River at the town of S\flnpter, approximately llU 

 miles above the mouth. It is about 9 miles long, of which the lower 

 5 miles appeared suitable for salmon spawning. For the first 3 miles 

 above the mouth the stream flows across the upper end of the gently 

 sloping, open Sumpter Valley, It then extends for some 2 miles through 

 low, rolling hills moderately covered with young pines. In this first 

 5 miles the stream had an average width of 20 feet, and was discharg- 



83 



