OCR Text |
Show ( 14) Diamond Fork This stream is rated as a Glass III stream above the confluence with Sixth Water Creek. The stream above the confluence contains an abundant population of cutthroat trout along with rainbow and brown trout„ In 1972 about 20,000 " catchable" size rainbow trout were planted. Below the confluence, the stream channel is in poor condition and very unproductive because of heavy erosion and sedimentation.' This situation has resulted from operation of the Strawberry irrigation system. Further discussion of this matter appears in paragraphs C4c( 3) and D2a„ ( 15) Provo River The Provo River supports cutthroat, rainbow, brown and brook trout as well as whitefish. During 1972 about 96,000 " catchable" size rainbow trout were stocked throughout the section of stream below Deer Creek Reservoir. The fishery above Deer Creek Reservoir is adversely affected by channel erosion aggravated by high annual spring flows originating from the North Fork of the Duchesne River via the Duchesne Tunnel and from periodic seasonal dewatering. Some sections of this portion of the stream have been substantially diked and channelized to protect adjacent lands from flooding during spring runoff and the operation of the Duchesne Tunnel. This portion of the river is rated Class II and III. The 5- mile section immediately below Deer Creek Reservoir is classified as Class I under the existing program of operation and supports a thriving, self- supporting population of brown trout. The lower portion of the river is of variable but lower fishery quality than the upper portion because of existing dewatering schedules. The problem of fish kills below Olmsted Diversion, resulting from dewatering of the river during the non- irrigation season, has been remedied since 1971 when Utah Power & Light Company consented to provide a minimum release of 25 second- feet 1 ? 0 through the diversion. According to the State Division of Wildlife Resources, except for sections of the Provo River where dewatering occurs, there have been no documentations of fish kills resulting from excessively low natural stream flows. All of the streams discussed, except Twin Creek, support populations of fish. 137 |