Laserfiche WebLink
Relationship to Additional Selection Criteria: <br />For the razorback sucker, additional selection criteria were developed to assist in the <br />selection of proposed critical habitat designations. This reach of the Green River meets those <br />criteria. <br />Presence of Spawning Population <br />No spawning population is presently known to exist within this reach, although individuals <br />likely move to this reach after spawning. <br />condition have been captured in Labyrinth <br />Nursery Habitat <br />However, razorback sucker in reproductive <br />Canyon (Tyus 1987). <br />This reach contains bottomlands, eddies, and other low-velocity habitats which are suitable <br />nursery areas at certain water flows. <br />Historic or Present Distribution <br />Few razorback suckers remain in this reach. However, a larval razorback sucker was <br />captured near Mineral Bottom in 1992 (Ed Wick, NPS, pers. comm.) and two young-of-year <br />were collected in a backwater in the lower Green River (Tom Chart, UDWR, pers. comm.). <br />Maintenance of Rangewide Distribution <br />This reach may be very important for exchange of genetic material between the Green and <br />Colorado Rivers. This reach also may be important for razorback sucker larvae which drift <br />from the upper reaches of the Green River. <br />Special Mana ement <br />Obtaining flows of sufficient quantity and at the appropriate time may be a priority for this <br />reach. Nonnative fish also very abundant throughout this reach. <br />White River - Lower 18 Miles <br />Boundary Delineation: Utah, Uintah County. The White River and its 100-year floodplain <br />from the boundary of the Uintah and Ouray Indian Reservation at RM 18 in T.9S., R.20E., <br />section 21 (Salt Lake Meridian) to the confluence with the Green River in T.9S., R.20E., <br />section 4 (Salt Lake Meridian). <br />Shoreline Ownership: Tribal, 96.9 percent; Private, 3.1 percent. <br />Overlap with Proposed Critical Habitat for: Colorado squawfish. <br />54