Record Details
page 162
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 162 Central Utah Project, Bonneville Unit : Diamond Fork Power System : final Environmental Impact Statement, page 162 |
| Coverage | Electronic reproduction; |
| Format | 162 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 IV AFFECTED environment AND environmental consequences the channel by the diamond fork pipeline in addition fishery improve ment may be attainable on sixth water creek and diamond fork between three forks and monks hollow because the pipeline would extend from upper sixth water creek to the mouth of diamond fork flows for fisheries purposes could be improved on these stream reaches by either carrying excess streamflows stream flows in the pipeline whenever excess pipeline capac ity was available or adding flow to the stream from the pipeline during periods of natural low flow in the channel either of these possibili pos sibili ties would be subject co to the flexibility provided within the operational constraints of the conveyance system this additional potential enhance ment has not been quantified at this time additional analysis to ac complish com plish this would be required if this alternative were selected for construction at some future time although predicted water temperatures by month are not available for project alternatives other than the recommended plan a more general comparison of temperatures in diamond fork below monks hollow associated with each alternative is presented in table 28 maximum stream tempera tures are shown for operational options representing years when water in strawberry reservoir is released from both above and below the thermo cline releases from above the thermocline would have predicted maximum water temperatures of 17 to 19 C for the fifth water pumped storage alternative 16 to 19 C for the 1964 DPR alternative and 17 to 20 C for the sixth water pumped storage alternative these temperatures are similar to existing maximum temperature levels in diamond fork trout populations therefore would not be appreciably affected over present conditions maximum water temperatures predicted with releases below the thermocline in strawberry reservoir would vary with each alternative but would generally be at least within the tolerance range for trout if not within the preferred or optimum range predicted temperatures under the 1964 DPR alternative however would be approaching the lower end of the trout tolerance range which could adversely affect trout growth impacts of other project alternatives on oxygen and nutrient levels as they affect the fishery resource in diamond fork below monks hollow would be similar to those discussed for the recommended plan although dissolved oxygen levels could be slightly lower with the fifth water pumped storage alternative the reduction in turbidity and sediment deposition in diamond fork as discussed for the recommended plan would be similar for the fifth water pumped storage and sixth water pumped storage alternatives in that significant habitat improvement for aquatic macroinvertebrates macro invertebrates and brown trout spawning would occur under the 1964 DPR alternative however total streamflow stream flow sediment load and turbidity would increase these factors along with the colder water temperatures predicted with operation of this alternative would combine to cause significant adverse impacts to biological communities in diamond fork between three forks and hayes reservoir 162 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/3363 |
