Record Details
page 131
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 131 Central Utah Project, Bonneville Unit : Diamond Fork Power System : final Environmental Impact Statement, page 131 |
| Coverage | Electronic reproduction; |
| Format | 131 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 year if this program is effectively implemented in the future nutrient loadings into the diamond fork system would be lowered and eutrophy conditions would be better than described below under environmental impacts present and projected levels of TDS in the diamond fork system are not high enough to be of major concern in either strawberry reservoir or the diamond fork system the addition of high quality water from the strawberry aqueduct would reduce the present average TDS levels by ap proximately 20 to 25 percent environmental IMPACTS the water quality parameters of significant concern in the diamond fork spanish fork river system which may be impacted by the project are water temperatures dissolved oxygen nutrients and suspended solids these are of concern in the streams as well as in the proposed reser voirs doirs other water quality elements are suitable for the intended uses of the water and would not be significantly impacted by the project before construction was initiated on the strawberry tunnel inlet rehabilitation the inlet to the proposed syar tunnel the need for a selective withdrawal inlet tower in strawberry reservoir was evaluated A multilevel outlet would add flexibility in controlling water quality in the diamond fork power system strawberry reservoir however would benefit from withdrawing the deeper waters an effort to improve water quality in the diamond fork system might result in water quality trade offs in the strawberry reservoir if water quality problems occur they could be dealt with better in the diamond fork system than in strawberry reservoir for example if low dissolved oxygen levels should occur below project reservoirs baffles or mixers could be installed to aerate the stream more rapidly based on these factors a multilevel outlet in strawberry reservoir is not included in the plan for the diamond fork power system the release pattern of water from strawberry reservoir into the diamond fork power system varies depending on the alternative selected the water temperature dissolved oxygen and nutrient concentrations of the released water would vary seasonally but can be estimated based on water surface elevation length of stratification and location of the thermocline relative to the syar tunnel inlet studies by reclamation indicate that none of the reservoirs are expected to strongly stratify hayes reservoir under the 1964 DPR alternative would have the greatest tendency to stratify monks hollow reservoir under the various alternatives would weakly stratify in addition the reservoirs should not experience significant density cur rents except for hayes and monks hollow reservoirs which would have mild stratification 131 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/4332 |
