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-b~- A number of tributaries enter the Green River throughout the study area. These tributaries were investigated during the study in an attempt to evaluate them as potential spawning streams and for possible establishment of sport fish populations. Of the tributaries investigated, Fontenelle Creek in the upper section of the study area, must be eliminated from any consideration given the Flaming Gorge Reservoir. The mouth of Fontenelle Creek lies above the proposed Fontenelle .Dam, The Big Sandy River offers nothing from the stand- point of a spawning tribbtary. The bottom of this stream is composed of very fine sand and silt and excessive silt conditions exist during the majority of the year. These conditions also render the lower section of the Big Sandy River unfavorable for game fish populations. Bitter Creek flow is maintained the greater part of the year by outfall from the Rock Springs Sewage IDisposal Plant, Consequently, it can be considered for all practical purposes as a sterile stream. Sage and Currant Creeks contain poor bottom conditions for spawning purposes, Production of food in the lower sections of these streams is also very light. It is doubtful that game fish populations in the reservoir will utilize these streams to any extent. Henryas Fork, located approximately one-fourth of a mile below the Government Bridge on the Green River, has a sand and silt bottom extending some three miles upstream from the mouth. The high water level of the reservoir will extend approximately five miles up Henry"s Fork, thus inundating this sandy area. No game species are found in the lower section of Henry®s Fork at the present time, but bottom conditions of gravel and sand in the vicinity of McKinnon could furnish limited spawning area to spawning migrants from the reservoir. Sheep Creek supports a trout population at present and will probably continue to do so after the reservoir is completed. The upper section of Sheep Creek contains rainbow and would probably furnish limited spawning area to spring run species. Water flow is greatly reduced during the fall; spawning area available would be very limited during this period, Carter Creek supports trout populations to its mouth. Recovery of rainbow x native crosses in 1959 indicate that natural reprod~~ction is taking place in the stream. This stream offers the greatest potential of stream tributary to the Green River for natural spawning grounds or develop- ment of egg taking operations. PAST STOCKING The Green River from LaBarge to the town of Green River has been known to contain a limited trout population for some time. However, fishing pressure in this section in past years has never demanded that an intensive management program be developed to improve the quality of fishing. Consequently, past hatchery production and other management methods have been diverted for the most part to more heavily utilized areas in the drainage. The first record of stocking in the study area was November 3, 1939. Since that time, approximately twenty years, there has been 223,449 fish planted. At first glance, this would appear to be a substantial number9 however, in analysing the calculations, it can be seen that the stocking policy has not been very intensive in the section of river within the confines of this study.