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WSP04306
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Last modified
1/26/2010 12:54:48 PM
Creation date
10/12/2006 12:16:34 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.200.10.H
Description
UCRBRIP Stocking
Basin
Colorado Mainstem
Date
9/5/1996
Author
UCRBRIP
Title
Procedures for Stocking Nonnative Fish Species in the Upper Colorado River Basin
Water Supply Pro - Doc Type
Publication
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<br />(3) Lake Management Plans and stocking proposals, that have been' <br />previously approved or are evaluated and accepted under these <br />Procedures, may be reviewed at any time by mutual agreement of <br />the Service and the State wildlife agency to insure <br />compatibility with recovery objectives. Approved Lake <br />Management Plans and stocking proposals will be reviewed every <br />five years (see Section X). <br /> <br />(4) Any party may petition the appropriate State wildlife agency <br />to review an approved Lake Management Plan or stocking proposal <br />based on new information that was not previously considered in <br />the development or evaluation of the proposal. <br /> <br />Black craooie/blueoill/laroemouth bass: These species are not well <br />adapted to riverine environment and do not appear to establish <br />self-sustaining populations in rivers upon escapement. However. <br />there is concern that these species will flourish in flooded <br />bottomland habitats that are being reconnected with Upper Basin <br />rivers. <br /> <br />Triploid orass caro: Grass carp have been introduced into the <br />United States as a vegetation control. Only certified triploid <br />grass carp are being used in the Upper Basin, because they lack the <br />ability to reproduce. This allows their numbers and distribution <br />to be controlled. Very few triploid grass carp have been captured <br />in the river from past stocking in isolated ponds. Grass carp are <br />not known to prey on other fishes, but can alter habitats of other <br />fishes by changing vegetation. Because of the expense in obtaining <br />these fish. stocking in areas where escapement is possible is <br />highly unlikelY. <br /> <br />4. Isolated public and isolated private waters, having no connection <br />to the river, that are above the 50-year floodplain can be <br />routinely stocked with largemouth bass, black crappie, bluegill, <br />mosquitofish, and triploid grass carp. <br /> <br />Mosquitofish: Routine stocking of mosquitofish 1S restricted to <br />isolated ponds and reservoirs outside the 50-year floodplain <br />because they are aggressive omnivores that have been associated <br />with negative impacts on native fish species in the American <br />Southwest. Mosquitofish are currently common (as a result of <br />stocking) in habitats used as nursery areas by endangered Colorado <br />River fish. <br /> <br />5. Isolated public and isolated private waters, having no connection <br />to the river, that are above the 6,500-foot msl (Appendix 0) and <br />above the IOO-year floodplain can be routinely stocked with fathead <br />minnow and channel catfish in addition to those species approved <br />for above the 50-year floodplain. <br /> <br />Fathead minnow: Routine stocking restricted to waters outside of <br />the IOO-year floodplain with no connection to the river is based on <br /> <br />7 <br />
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