Record Details
page 67
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 67 Final supplement to the final environmental impact statement : Diamond Fork System, Bonneville Unit, Central Utah Project, page 67 |
| Coverage | Electronic reproduction; |
| Format | 67 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 ili lii AFFECTED environment AND environmental consequences quality in the lower reaches by diluting the low flows which presently consist mostly of seepage and return flows As shown in table 22 without monks hollow reservoir the sediment load at the mouth of diamond fork fonk would not be noticeably reduced utah lakejordan Lake Jordan river the primary indicator of project impacts in utah lake is the level of TDS in mgl egl TDS levels in utah lake and its tributaries tributa ries differ markedly over time these temporal variations consist of both seasonal patterns and longer term wet and dry cycles A computer model LKSIM used to model the water and salt balance for the lake system has been used to predict the salinity levels expected under alternative C and for historical and future without project conditions modeling or other simulations over the long term for other quality constituents such as pesticides bacteria counts nutrient levels trace metals and organic concentrations is not practical although these constituents also would experience longterm long term variations the variations would be much smaller since they are much less depena dependent ent on water quantities an evaporation than the salts these other constituents are typically generated in large part from wastewater discharges storm runoff and pollutant dumping which are more independent of the water quantities in the lake system table 23 contains a comparison of average maximum and minimum TDS values for historical and future without project conditions and alternative C the average TDS level for alternative C 1030 mgl egl would be about 6 percent less than the future without project level which would result in a slight improvement in the lake salinity level this improvement is the result primarily of operating the lake at a higher level in low water years the total inflow and outflow to the lake are approximately the same under future without project and alternative C since water quality at the jordan river narrows is controlled primarily by the water quality in utah lake TDS at the narrows would average about 1030 mgl egl with alternative C which would be a slight improvement over future without project conditions other water quality parameters would not be significantly impacted by the project as previously discussed impacts of the recommended plan and alternative A on utah lake and the jordan river will be discussed in more detail the iad i&d system environmental statement 67 15 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/12982 |
