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Last modified
7/14/2009 5:01:44 PM
Creation date
5/22/2009 4:45:02 PM
Metadata
Fields
Template:
UCREFRP
UCREFRP Catalog Number
7025
Author
Hawkins, J. A. and T. P. Nesler.
Title
Nonnative Fishes in the Upper Colorado River Basin
USFW Year
1991.
USFW - Doc Type
An Issue Paper.
Copyright Material
YES
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<br />30 <br /> <br />Northern pike <br /> <br />Fisheries for northern pike were deemed moderate overall by one respondent In <br />Utah, the species population was considered to have excellent potential for supporting a <br />moderate fishery in the Green River but was rated inconsequential at present A small, local <br />fishery for northern pike was identified in the Green River near Jensen. In Colorado, <br />northern pike were considered by one respondent to support a moderate fishery in the <br />upper Yampa and in off-channel impoundments in both the Yampa and White rivers. <br />Another respondent considered the northern pike fishery in the Yampa to be large, but <br />nonexistent in the Gunnison, Colorado, White, and Green rivers within Colorado. <br /> <br />Centrarchids <br /> <br />For largemouth bass, smallmouth bass, and green sunfish, riverine fisheries for these <br />species in Colorado and Utah were considered inconsequential in the Green, Colorado, <br />Dolores, Gunnison, and White rivers. One respondent listed the smallmouth bass fishery <br />in the Yampa River as inconsequential while another listed this fishery as moderate. In <br />standing water habitats, however, from small off-channel, gravel pit ponds to moderately- <br />sized Elkhead Reservoir in Colorado to large impoundments like Lake Powell and Flaming <br />Gorge, one or more of these species were considered to support moderate to large fisheries. <br />This was considered so in New Mexico also. Bluegill and crappie fisheries were considered <br />inconsequential in all cases except in Rio Blanco Lake near the White River in Colorado. <br /> <br />Walleye and Striped bass <br /> <br />Fisheries for these two species were considered large or substantial only in Lake <br />Powell, and for striped bass:in Lakes Mojave and Mead Walleye in the Green River was <br />considered inconsequential. <br /> <br />Bullhead species <br /> <br />In Colorado, fisheries for black bullhead were considered inconsequential in the <br />Dolores, Yampa, and Little Snake rivers; and moderate in the Gunnison, Colorado, White, <br />and Green rivers. In New Mexico, the yellow bullhead fishery was considered large. <br /> <br />Trout species <br /> <br />Fisheries for salmonid species are relevant when they exist in impoundments or their <br />tailwaters that occur within the historic range of native warmwater species, or in river <br />reaches above this historic range, but may also be affected by reservoir operations. As such, <br />respondents considered large to world class brown and rainbow trout fisheries existed in the <br />tailwaters below Flaming Gorge Reservoir on the Green River, Navajo Reservoir on the San <br />Juan River, Ruedi Reservoir on the Fryingpan River (upper Colorado mainstem), below the <br />
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