Record Details
page C-21
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page C-21 Final environmental statement : authorized Upalco Unit, Central Utah Project, Utah, page C-21 |
| Coverage | Electronic reproduction; |
| Format | C-21 text/PDF |
| Rights | Brigham Young University; http://lib.byu.edu/about/copyright/generic.php Public Domain Public |
| Language | English; eng; en |
| Relation | Central Utah Project; Western Waters Digital Library; irrigation nonirrigation non releases from moon lake reservoir to tas keech reservoir would guarantee average streamflows stream flows of about 30 cfs cs in most years with minimums of 16 cfs cs whereas existing flows in poor water years often are 0 during the winter the reduced need for drawdowns draw downs of moon lake reservoir for irrigation would lead to decreased summer flows however releases for irrigation below taskeech Tas keech reservoir would increase the streamflows stream flows to the yellowstone river confluence during the summer average fall and winter flows would be maintained at approxi mately the same rate as at present although historic minimums would be augmented by the provision of a 5 cfs cs minimum flow for fishery purposes spring runoff would decrease slightly the taskeech Tas keech service canal about 1.3 13 13 miles downstream from taskeech Tas keech dam would have little effect on project flows in the lake fork river since the canal would be used for relatively short periods of time diversions would usually be made in late summer when flows were high because of irrigation releases As shown in table C 5 the lake fork river below the confluence with the yellowstone river would have decreased flows in fall winter and spring because of the reduced flows in the yellowstone caused by diversion to and storage in taskeech Tas keech reservoir summer flows would be increased overall because of project releases from taskeech Tas keech reservoir but progressive diversions downstream would eventually decrease streamflows stream flows under project conditions it is expected that the project mai m&i water would be diverted through the class C canal about 4 miles below the confluence these diversions would be made from october through april and would range from 3 to 7 cfs cs 3 duchesne river in an average year the duchesne river below the con fluence with the lake fork river would experience a substantial decrease during the fall and winter with an even greater decrease during spring runoff because of storage in taskeech Tas keech reservoir summer flows would be markedly increased however because of project return flows to the river c reservoir fluctuations with the construction of taskeech Tas keech reservoir and under proi ect act operation fluctuation in 14 high country lakes and two existing reservoirs moon lake and twin pots would be decreased on the other hand fluctuations at big sand wash reservoir would be increased taskeech Tas keech reservoir would fill during the late fall and winter and the largest releases those for project irrigation water would be made in the summer As seen in table C 6 for an average year the reservoir would fluctuate in surface area from a maximum maximum of 1164 acres to a minimum of 652 acres this represents a change of 49 feet in water depth C 21 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/3500 |
