Record Details
page 658
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 658 Final Environmental Statement : authorized Bonneville Unit, Central Utah Project, Utah, page 658 |
| Coverage | Electronic reproduction; |
| Source | Bureau of Reclamation. Department of the Interior |
| Publisher | Brigham Young University |
| Date | 2005-10-14 |
| Format | 658 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 bureau of reclamation published a reag repg report in 1972 entitled colorado river water quality improvement program this aport deport eport 1eport states prior to their authorization it was known that the colorado river storage and participating projects navajo indian irrigation project san juan chama project and the fryingpan arkansas project would cause significant increases in salinity levels this was expected to arise primarily from the increased consumptive use of water and transport of high quality water out oul of the basin recognizing the concern of the colorado river water users congress stipulated that studies be made of the water quality in the basin and that control plans be developed the stipulation wasqxpressed was expressed in the authorizing legislation for the projects abb 168 160 lbb A salinity control study for the entire colorado river basin pasin rasin is in progress basically this study is designed to investigate ways to reduce the salt load in the lower portion of the river to offset the affects of the upstream depletion associated with authorized developments ard ad and a d to to determine if such salinity reduction measures are economically feasible A basic network of water quality stations has been established at principal points throughout the entire basin to facilitate the study and to help identify high saline sources that might be intercepted and removed brom from from the river system the die dle bonneville unit impact on water quality of the colorado river would be to increase the average concentration of dissolved solids below hoover dam about 10 mgt mg1 mgl to 14 mgl mg1 mgt as estimated by the bureau of reclamation and the environmental protection agency respectively historically the average annual salinity concentration of the colorado river below hoover dam has varied from a low of 610 gio mg mgt mg1 ngi 1 in 1949 949 to 1 a high of 839 mei mel in 1956 based upon lipon present modified conditions the average salinity below hoover dam is estimated to be 745 mol moi the anticipated salinity increase due to future developments will range from 171 mg1 mgl ngi mgt to 226 mgl mg1 mol moi mgt which would increase the average concentration from 745 mei mg1 m91 mel mgt to the 916 gig 91610 to 10 971 ngi range the amount of increase attributable to the bonneville unit would be 10 to 14 mgl mg1 ngi mgt or about 4 percent of the total estimated increase thus the bonneville unit separately would have only a minor effect on the salinity increase however its conti contribution ibution to a serious and cumulative problem is recognized recently the environ enviror environmental mmentall protection agency estimated an annual cost of 41400 4l400 t4400 per mel mg1 mgl mei mgt increase to water users below hoover dam for salinity increases from the bonneville unit using chis this estimated cost the annual economic impact attributable to the bonneville unit would range from 4l4000 414000 a14000 to 580000 for salinity increases of 10 mgt mg1 mgl and 14 mg1l mg1 mgt respectively the salinity problem of the colorado river as it relates to the bon Eon bonneville neville unit is discussed in sections 3 through F of the final statement under the heading of water quality 658 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/5299 |
