Record Details
page A-6
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page A-6 Final environmental statement : authorized Upalco Unit, Central Utah Project, Utah, page A-6 |
| Coverage | Electronic reproduction; |
| Format | A-6 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; the spillway on the dams left abutment would have a discharge capacity of 10600 cfs cs releases to the river for mai m&i and irrigation use down stream would be made through the outlet works which would have an intake near the base of the dam allowing evacuation of almost the entire con tents of the reservoir if necessary the intake for the spillway would be 12 feet below the crest of the dam and would in combination with the reservoirs short term flood storage capacity surcharge and the outlet works discharge capacity protect the dam against the inflow design flood the reservoir formed behind the dam and dike would extend about 4.2 42 42 miles up the lake fork river and would have a total capacity of 78400 acre feet and a water surface area of about 1212 acres of the average annual storable flow to the reservoir about 16000 acre feet would come from the lake fork river and 13900 acre feet would come from the yellowstone river via the taskeech Tas keech feeder canal flows stored from the rivers would be those in excess of present water requirements down stream plus an average annual storable flow of 4000 acre feet trans ferred berred to the reservoir from the 14 high country lakes and about 1600 acre feet previously stored in twin pots reservoir the reservoirs active capacity or that portion of water that would be used to satisfy project water needs would consist of 66000 acre feet the dead and inactive capacities of about 12400 acre feet would form the reservoirs minimum pool and would not be drawn upon under normal circumstances in order to benefit recreation and fishing use at the reservoir no storage would be included in the reservoir for sediment deposition since the expected deposits would amount to only about 1 percent of the active capacity in 100 years additional information concerning the dam dike and reservoir is shown in in table A 2 and design drawings for the dam and dike are shown in attachment 1 the operation of taskeech Tas keech reservoir would be coordinated with that of moon lake reservoir to meet both existing demands and project purposes and at the same time maximize recreation and fishing values at both reservoirs those operating the reservoir would main tain an accounting of water levels and water demands so that both reservoirs could be filled and drawn down at about the same rate this method of operation would have several advantages it would prevent the present drastic fluctuations in moon lake reservoir it would enhance recreation values at both reservoirs and it would allow an average winter release of 30 cfs cs to be maintained in in the lake fork river between moon lake dam and taskeech Tas keech reservoir a section of river river that often is de watered from november through april taskeech Tas keech reservoir would fill slowly during the fall and winter months by fishery flows released from moon lake reservoir and by irrigation storage transferred from the high country lakes it would fill more rapidly in may and june as the result of spills from moon lake reservoir and the diversion of flows in excess of 25 cfs cs from the A 6 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/4758 |
