Record Details

page 77

Digital Collections at BYU

Field Value
Title page 77 Final supplement to the final environmental impact statement : Diamond Fork System, Bonneville Unit, Central Utah Project, page 77
Coverage Electronic reproduction;
Format 77 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; CHAPTER 111 III lil lii AFFECTED environment AND environmental consequences table 30 predicted effects of alternatives on stream trout fisheries 5 years after operation begins wild trout stocked trout alternative standing crop pound habitat units angler use days year standing crop pound angler use days year existing condition 1612 1744 2199 3000 11050 recommended plan 2183 2348 2332 14000 1400 31.654 31654 alternative A 2338 2527 2430 14000 31654 alternative C 3123 3377 2945 16217 35582 1984 FES 2420 2615 2516 14000 31654 reach 4 of the spanish fork river would be slightly enhanced by project flows with standing crop habitat units and angler use increasing by 12 percent 12 percent and 5 percent under project operation increased flows in reach 5 would degrade fish habitat primarily because of excessive water velocities wild trout standing crop habitat units and angler use would decrease by 31 percent 31 percent and 36 percent respectively in reach 5 these categories for all reaches of the spanish fork river combined would decrease by 28 percent 28 percent and 34 percent respectively under the recommended plan wild trout standing crop habitat units and angler use would increase by 163 percent 163 percent and 79 percent respectively in the lower two reaches of diamond fork table 31 this significant gain more than compensates for the complete loss of habitat in reaches 3 and 4 of diamond fork because of inundation by monks hollow reservoir as well as the reduction in habitat on the spanish fork river as discussed above and sixth water creek as discussed below the sixth water creek fishery would be adversely affected in reaches 1 2a aa and 2bi abi by the recommended plan reach 1a aa would be inundated by monks hollow reservoir reductions in trout habitat in reaches 1b ab 2a aa and 2bi abi would occur because project water would enter the stream directly below the last chance powerplant Power plant about 3.8 38 38 miles above diamond fork these flows would be about 150 to 200 cfs cs higher than existing levels and would exhibit excessive water velocities and associated habitat degradation standing crop habitat units and angler use would decrease by 89 percent 89 percent and 75 percent respectively from existing conditions table 31 reaches 2bii ubii and 3 would revert to carrying natural flows throughout the year which would be much less than existing irrigation flows these lower natural flows would provide a slightly higher level of trout habitat because of the removal of the scouring irrigation flows from the channel standing crop and habitat units would show a 2 percent 77
Identifier http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/12995

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