Record Details
page 1-56
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 1-56 Final environmental impact statement on the Provo River Restoration Project, page 1-56 |
| Coverage | Electronic reproduction; |
| Format | 1-56 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; surrounding private property from the public the type and style of minimum i i standard fencing would be as described under baseline conditions see section 141.3 1413 provisions would be made for allowing livestock crossing or access zones through the fenced areas where this would be required by the adjacent landowner to continue grazing activities map A 2 in the back of the EIS shows projected locations of 100 year flood areas the 100 year floodplain flood plain would be inundated on average once every 100 years with one percent chance of inundation in any year typical 100 year floodplain flood plain depths would be 0.5 05 05 to 1.5 15 15 feet typical floodplain flood plain velocities would be about 1.0 10 lo io feet per second duration of inundation would be determined by releases from jordanelle Jor danelle dam the duration of peak discharge releases from the dam would be from one to seven days inundation in the floodplain flood plain could be expected to last for about one week beyond the peak release period for the 100 year flood and for shorter periods during smaller floods future urban development in the 100 year floodplain flood plain outside federally acquired areas would be regulated by wasatch county floodplain flood plain management ordinances inhabitable structures would be required to be elevated eg on fill material above the 100 year flood water surface level in accordance with county and other ordinances 16.4 164 164 construction procedures 1641 164.1 1641 L 641 64.1 typical construction procedures construction of the existing channel modification alternative would proceed from upstream to downstream with a cofferdam see section 154.1 1541 1541 used to keep portions of the existing channel area dry during construction the cofferdam would be placed near the center of the channel to isolate one side of the river channel and bank from active flow after construction is completed on one side of the channel flow would be introduced to it gradually eventually the entire river flow would be tamed turned into the completed section and channel construction would proceed on the opposite side of the river after work has been completed on one cons construction traction segment the cofferdam would be moved downstream to the next construction segment salvageable materials from the existing channel would be sorted and stockpiled stockpiler stock piled on site for use in new 1 channel construction salvageable materials include boulders and large rocks from the existing levees river cobble from the existing river bottom woody material from existing vegetation on the banks root wads tree trunks and large branches and topsoil timing of construction would be scheduled such that to the extent possible construction in the existing channel itself would not occur during the high flow period in may through july depending on hydrologic conditions and Jorda jordanelle jordaneffe Jor danelle nenne neffe reservoir levels jordanelle Jor danelle reservoir water releases could be reduced during construction to facilitate equipment ingressegress ingres segress and construction activity no plan for this has been developed at this time and any such plan would have to be approved by downstream imgators irrigators irrigatory im gators other water rights holders and environmental agencies and would have to satisfy all water rights obligations jordanelle Jor danelle reservoir water releases would be managed for approximately 5 years following construction to prevent the occurrence of severe flows this would allow vegetation to become well established along the channel banks minor flooding would be allowed outside the channel to encourage the development of riparian vegetation in the floodplain flood plain A specific reservoir management plan has not been formulated at this time and would be dependent on reservoir storage conditions at the time of construction construction equipment and stockpiling procedures for the existing channel modification alternative would be the same as those described in section 154.1 1541 1541 for the proposed action in addition stockpiling staging and construction activity areas would be confined as much as possible to the side of the channel where setback dikes would be constructed to minimize adverse impacts on existing riparian vegetation existing utilities crossing the river are suspended and would be protected in place during and after construction 1642 L 1642 642 6.42 164.2 642 typical noise levels and air emissions typical noise levels and air emissions for the construction equipment required to construct the existing channel modification alternative are |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/7643 |
