Record Details
page 133
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 133 Central Utah Project, Bonneville Unit : Diamond Fork Power System : final Environmental Impact Statement, page 133 |
| Coverage | Electronic reproduction; |
| Format | 133 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 nutrient loading into syar sixth water and monks hollow reser voirs doirs from strawberry reservoir would be relatively high especially during years that waters are released f from rom below the thermocline all three reservoirs would be classed as eutrophic the probability of eutrophy would be about 46 to 99 percent for both syar and sixth water reservoirs 71 percent average and 50 to 96 percent for monks hollow reservoir 66 percent average nutrient levels in water released from monks hollow reservoir should be lower than the presently high levels in releases from strawberry reservoir considerable effort was made to project dissolved oxygen conditions in the various reservoirs and downstream for the different alternatives but conclusive projections were not possible the state of the art in this area is not to the point that there is adequate methodology avail able to reliably project dissolved oxygen conditions within each reser voir the projections are based upon professional judgment and knowledge of conditions in other existing reservoir systems in addition to the re sults of the models used monks hollowreservoir hollow reservoir is expected to weakly stratify during proj broj ect act operation projected temperatures of water within the reservoir that would be released to diamond fork are tabulated on a monthly basis in table 31 this table also gives inflow temperatures from strawberry and sixth water reservoirs during years that releases are from below the thermocline in straw berry reservoir syar syor and sixth water reservoirs should warm to about 9 to 10 C and 9 to ll 11 11 C respectively in august early september monks hollow reservoir should warm to about 9 to 15 C water released to diamond fork from monks hollow reservoir would probably reach a maxi mum of 9 to 15 C normally dissolved oxygen levels in monks hollow reservoir should be sufficient to maintain a fishery however during some periods such as when anoxic waters are released from strawberry reservoir or when algae blooms or calm weather periods occur there may be locations in the reservoir where dissolved oxygen is below 5 mgl egl in these areas the worst case condition is projected in the 4 to 5 mgl egl dissolved oxygen range during years in which warm waters are released from above the ther mocline macline in strawberry reservoir syar reservoir should warm up to a max imum icum temperature of about 17 to 20 C in august sixth water reser voir should warm up to a maximum temperature of 17 to 20 C in august waters released from monks hollow reservoir down diamond fork should range from 5 to 6 C in early may to about 17 to 20 C in august these maximum water temperatures are very similar to the present range of maximum water temperatures 17 to 21 C in diamond fork at monks hollow dissolved oxygen levels should range from about 6 to 10 mgl egl because of the expected temperature and dissolved oxygen conditions and the large water level fluctuations which would occur in strawberry and monks hollow reservoirs multilevel outlets are not recommended for 133 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/3443 |
