ICo North Fork, Malheur River .— (July 20-21, 19^2; Parkhurst.) 

 The North Fork enters the main Malheur River just below the town of 

 Juntura, or approximately 79 miles above the mouth. It extends for a 

 distance of more than 5>0 ™iles, of which the lower 15.7 miles up to the 

 impassable Beulah dam were surveyed „ 



The lower 5§ miles of the stream extends through the flat Juntura 

 valley. The valley is l/2 to 2 miles wide, and largely utilized for 

 hay and pasture,, It is bounded by moderately steep hills 300-U00 feet 

 high having a sparse cover of sage. The stream in this section has an 

 average width of 51 feet and a slight gradient. The discharge at the 

 confluence with the main Malheur was 28£ c,f .s The stream bed was 

 covered with a heavy layer of silt, and was considered of little possible 

 value to anadromous fish. There are few shallow riffle areas. Resting 

 pools are numerous, but the sparse marginal vegetation of willow and 

 sage affords poor stream cover. The water temperature was 67,0°Fo through- 

 out the section. 



Above the Juntura Valley the North Fork extends through a narrow, 

 rocky canyon $0 to 200 yards wide for a distance of 3 miles. There is 

 no cultivation or grazing in this section. The stream has an average 

 width of UO feet and a fairly steep gradient. Ihere is some possible 

 spawning area and adequate resting pools. However, the stream was con- 

 sidered of no present or potential value to anadromous fish. The water 

 temperature was 67oO°F, There are two irrigation diversions in this 

 section. The lower diversion is located about 6| miles above the mouth, 

 and was carrying about 10 cf.s, at the time of observation. There is 

 no dam in connection with this diversion, the controlled flow from the 

 Agency Valley reservoir and the steep gradient rendering wing dams un- 

 necessary. There are no fish protective devices. The next diversion 

 is about 200 yards farther upstream. It is somewhat larger, and was 

 carrying about 15 c,f«s, at the time of observation. It likewise has 

 no daiuor any fish protective devices. 



Above the canyon the North Fork extends for a distance of 7«2 miles 

 to the Beulah dam and the Agency Valley reservoir. In this section the 

 stream runs through a valley l/k to 1/2 mile wide which is largely 

 utilized for pasture and hay. The stream has an average width of 30 

 feet and a moderate gradient. There are numerous shallow riffles and 

 good resting pools. However, the stream bed is heavily silted, and was 

 considered of no present or potential value to anadromous fish The 

 water temperature was 65,0°F, just below the dam. 



The Beulah dam and Agency Valley reservoir were completed in 1935* 

 The dam is an earth-fill, rock-faced structure having a crest length of 

 1,867 feet, and rises 89 feet above the stream channel. The spillway is 

 a concrete chute at the right abutment fitted with three 18 foot steel 

 cantilever gates. The discharge over the spillway at the time of the 

 survey was 310 c,f ,s. There are no fishways, and the dam is impassable 



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