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WSP10985
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Last modified
1/26/2010 3:15:32 PM
Creation date
10/12/2006 4:38:53 AM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.300.10
Description
San Juan River Recovery Program - Program Organization and Mission
State
CO
Basin
San Juan/Dolores
Water Division
7
Date
2/1/1995
Author
SJRRIP
Title
San Juan River Basin Recovery Implementation Program
Water Supply Pro - Doc Type
Project Overview
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<br />1017 <br /> <br />13 <br /> <br />Table 2.1. Native Fish Fauna of the San Juan River Basin <br /> <br />Species Status <br /> <br />Colorado River Cutthroat Trout <br />Roundtail Chub <br />Bony tail Chub <br />Colorado Squawfish <br />Speckled Dace <br />Flannelmouth Sucker <br />Bluehead Sucker <br />Razorback Sucker <br />Mottled ScUlpin <br /> <br />CO <br />NM <br />E <br />E, CO, NM, UT <br />C <br />A <br />A <br />E, CO, UT <br />R <br /> <br />E = <br />CO = <br />NM = <br />UT = <br />A = <br />C = <br />R = <br /> <br />Endangered, United States <br />Protected, Colorado <br />Protected, New Mexico <br />Protected, Utah <br />Abundant, generally distributed and typically numerous <br />Common, generally distributed but typically not numerous <br />Rare, not generally distributed and never numerous <br /> <br />2.1.2 Non-native Fish Fauna <br /> <br />Since the late 1800's, at least 40 non-native fish species have <br />been introduced to the Upper Colorado River Basin. In the San <br />Juan River sub-basin, 23 non-native fish species have been <br />reported (Table 2.2). Of these, 21 have been documented in the <br />San Juan River since 1987. In warmwater reaches of the mainstem <br />San Juan River, common carp and channel catfish were the only <br />common and generally distributed non-native fish species. <br />Rainbow, cutthroat (Snake River subspecies), and brown trouts <br />were common in coldwater reaches of the San Juan River (including <br />the Navajo Dam tailwater reach) and its upper tributaries. Red <br />shiner, fathead minnow, and mosquitofish were the most common <br />non-native species found in low-velocity habitats associated with <br />the mainstem San Juan River. Other non-native fish species, such <br />as black bullhead, plains killifish, green sunfish, and <br />largemouth bass, were very rare and several probably derived from <br />upstream or downstream or off-channel impoundments. <br /> <br />Some non-native fish species were introduced by federal, state, <br />and tribal agencies to establish food or recreational fisheries <br />while others became established as a result of bait minnow, <br />fishermen, or accidental releases. In New Mexico and Utah, <br />stocking of non-native warmwater species has been discontinued, <br />but non-native salmonids are still stocked in suitable habitats <br />in Colorado and New Mexico (including the Navajo Dam tailwater <br />
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