Record Details
page 3-25
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 3-25 Final environmental impact statement on the Provo River Restoration Project, page 3-25 |
| Coverage | Electronic reproduction; |
| Format | 3-25 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; increase in TSS and TP concentrations during and immediately after construction but would not change concentrations over the longterm long term once construction is complete 33641.2 336412 temperature construction of this alternative would increase provo river temperatures as described in section 33631.2 336312 for the proposed action except temperature increases would range from OF in reaches 4 and 5 to 54f in reach 8 see table 39 3 9 before returning to approximately baseline levels after vegetation is established reestablished re 3364.2 33642 33642 deer creek reservoir the following subsections describe potential water quality impacts on deer creek reservoir under the exiting channel modification alternative 33642.1 336421 336421 sediment minor increases in TSS concentrations to deer creek reservoir during and immediately after construction of this alternative would be the same as described in section 33641.1 336411 for the provo river 33642.2 336422 336422 eutrophication increases in T TP loads to deer creek reservoir during and immediately after construction of this alternative are minor as described in section 33641.1 336411 336411 these loads would not be significant because they would not increase annual reservoir TP concentrations 33642.3 336423 336423 reservoir temperature and an d mixing status this alternative would not change the me hydrology of deer creek reservoir because it would not change inflow and outflow characteristics of the reservoir from baseline conditions therefore changes in reservoir depth or storage under this alternative would not affect stratification and mixing temporary increases of inflow water temperatures from the provo river would be less than 33f well below the significance criteria of 18f therefore the alternative would not change stratification or mixing in deer creek reservoir 3364.3 33643 33643 impact summary the following water quality impacts would occur under the existing channel modification alternative there would be a minor increase in TSS and T TP concentrations in the provo river during and immediately after construction however SOPs would prevent significant impacts 3 until new vegetation matures the loss of riparian vegetation and associated shading along with greater river surface area could increase late summer stream temperatures from 0 in reaches 4 and 5 to 54f 5.4 54 54 F in reach 8 water temperatures would drop to near baseline levels after vegetation becomes established the significance of this change is evaluated in section 3.5 35 35 aquatic resources there would be a mmor ammor minor increase in annual TSS loads to deer creek reservoir during and immediately after construction however SOPs would prevent significant impacts there would be a minor increase in annual TP TT loads to deer creek reservoir during and immediately following construction however SOPs would prevent significant impacts and the increased loading would not change the average annual TP T concentration hi in the reservoir 3365 5365 536.5 336.5 3365 5365 instream In stream structures alternative altern aleve alive the following sections define potential water quality impacts from construction of the instream histrearn In stream structures alternative by impact topic 3365.1 33651 provo prove river the following subsections describe potential water quality impacts on the provo river under the instream In stream structures alternative 33651.1 336511 nutrients and sediments construction of this alternative has the potential to affect nutrient and sediment concentrations in the provo river but would not affect adjacent land uses construction could cause some erosion and lead to minor increases in TSS and TP concentrations in the provo river however since construction would be minimal negligible amounts of soil would enter the provo river see section 3.8 38 38 soil resources therefore minor increases in TSS and TP during and immediately after construction would not be significant 33651.2 336512 336512 temperature this alternative would involve very little clearing of riparian vegetation and would not affect stream temperatures |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/8709 |
