in all but the upper mile. Its accessibility to salmon and steelhead 

 trout, however, is impaired by two dams near the Lake Creek Lodge. The 

 first of these is a s-wimming pool dam at the lodge. This dam has a drop 

 of only lU inches but the loose stone apron below it makes the structure 

 impassable except tihen the flash board is out. The second dam is about 

 2^ feet high at the flashboard-spillivay section 



There is a concrete power dam, U feet high, at the outlet of 

 the stream from Suttle Lake, This dam is not important to chinook 

 salmon and steelhead trout, but it may have been responsible for the 

 disappearance of the blueback salmon run. The spillway has a 15-inch 

 flashboard at the upper end of a sloping concrete apron 11 feet long 

 that would he impassable except under very favorable circumstances. 

 The 3-step fishway is too small for large fish and is blocked at the 

 upper end by a stationary screen. Two rotary screens prevent the es- 

 capement of fish from the lake to the creek* The diversion to the 

 small power plant is screened. 



IL. Crooked River .— (June 21, 25, and 26, 19U2} Frey.) Enters the 

 Deschutes about 3^ miles northwest of the toim of Culver, Oregon, and 

 extends for 115 miles. It is the largest tributary of the Deschutes 

 River, Runs of chinook salmon and steelhead trout formerly entered the 

 stream, but no salmon and only an occasional steelhead now are reported. 

 Extensive water use has been largely responsible for this condition and 

 it continues to be the limiting factor in attempting to improve present 

 conditions. In addition, there is a general absence of suitable spawn- 

 ing areas in the main river, and most of the tributaries have little or 

 no value to salmon because of their intermittent nature. There are five 

 large diversions near the town of Prineville, Oregon, and numerous small 

 ones in the 80 mile section between Prineville and the headwater streams. 

 Because of the general low stream flows none of the dams in connection 

 with these diversions would be passable during low water stages. 



From Prineville to the mouth the stream flows through a deep, 

 narrow canyon. Conditions for salmon are no better here than in the 

 upper section. Bottom materials are largely bedrock and boulders with 

 little or no suitable spawning areas observed. The gradient is steep 

 and the stream is scarcely more thaui a series of cascades. Low water 

 conditions persist in this section to within 7 miles of the mouth of 

 the river, -where Opal Springs adds a flow of approximately 1,000 c.f .s. 

 to the stream. This 7-mile section, although having a sufficient flow 

 of water, is completely lacking in suitable spawning areas. The Pacific 

 Power and Light Company operates a power plant on the stream about 2^ 

 miles above the mouth. 



It appears doubtful that Crooked River was ever of great im- 

 portance to salmon and it is certain that under present conditions there 

 is little to recommend it as a salmon stream, 



IL - (1). McKay Creek, — (June 25, 19U2j Frey.) Enters Crooked River 

 about 5 miles below Prineville, Oregon, This small stream goes completely 

 dry in low precipitation years. There are five small diversions in the 

 upper part of the stream, and most of the water near the mouth is diverted 

 into the Ochoco Irrigation Canal during the summer. It is of no value to 

 salmon, 



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