Record Details
page 3.7-10
Digital Collections at BYU
| Field | Value |
|---|---|
| Title | page 3.7-10 Finding of No Significant Impact Lake Fork Section 203 Alternative : Proposed Action, page 3.7-10 |
| Coverage | Electronic reproduction; |
| Format | 3.7-10 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; depletion anticipated then only about 201000 acre feet of water is available on an average annual basis to help meet the flow needs of the listed fishes and protect critical habitats flow reductions of this magnitude seriously diminish both the survival and recovery potential for listed fishes that inhabit the duchesne river therefore it is the services biological opinion that historic project operations and the development and use of new project water contributes to the endangerment of listed fishes and is likely to jeopardize the continued existence of the colorado squawfish razorback sucker humpback chub and bonytail bonetail bony tail and is also likely to adversely modify their critical habitats in the duchesne green and colorado rivers the FWS final biological opinion for the section 203 proposed action dated july 32001 contained in appendix B referred to their 1998 duchesne river basin biological opinion for their conclusions regarding impacts to the endangered colorado river fishes therefore we must conclude that the development and use of new project water contributes to the endangerment of listed fishes and is likely to jeopardize the continued existence of the colorado pikeminnow pike minnow razorback sucker humpback chub and bonytail bonetail bony tail and is also likely to adversely modify critical habitats in the duchesne green and colorado rivers the service has determined that as of this date the RIP has made sufficient progress towards recovery of the fishes to serve as the reasonable and prudent alternatives to avoid jeopardy for projects with an average annual depletion of 3000 acre feet the purpose of these reasonable and prudent alternative elements is to avoid jeopardy to listed species and destruction or adverse modification of their critical habitats while also providing reasonable assurance that water projects both new and historic can continue continue7 continued 7 therefore even though the FWS has concluded that the projects operation may jeopardize the continued existence of the listed colorado endangered fishes sufficient progress is made implementing the RIP which the FWS concludes would avoid that jeopardy 37411.2 374112 374112 razorback sucker within the duchesne basin razorback suckers reportedly occur in the lower 5 miles of the duchesne river see map 3.71 371 37 1 and may occur as far upstream as bridgeland RM 49 the razorback sucker was once one of the most abundant and widely distributed fish in the me colorado river system they were abundant throughout 3500 miles of main stem rivers and major tributaries tributa ries in arizona california colorado nevada new mexico utah and wyoming but were most abundant downstream of lake mead maddux fitzpatrick and noonan 1993 their current distribution is reduced to about 750 miles of rivers holden and StaI stal stalnaker naker 1975 razorbacks Razor backs now persist in remnant populations in the green yampa main stem colorado and lower san juan rivers tyus et al 1982 minckley et al 1991 very little recruitment of young fish into the population is occurring the largest population in the upper colorado river watershed is found in the green river between the duchesne river and yampa river tyus 1987 A substantial population is present in lake mohave but recruitment has been negligible in recent years minckley et al 1991 effects of the proposed action on razorback sucker would be the same as described for the colorado pikemonnow and would not result in any adverse effects on this species 3710 37 10 |
| Identifier | http://cdm15999.contentdm.oclc.org/cdm/ref/collection/WesternWatersProject/id/12003 |
