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WSP12584
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Last modified
1/26/2010 4:16:40 PM
Creation date
8/1/2007 2:14:33 PM
Metadata
Fields
Template:
Water Supply Protection
File Number
8240.200.21
Description
Colorado River Basin Threatened and Endangered Species - UCRBRIP - Hatchery Facilities
State
CO
Basin
Colorado Mainstem
Water Division
5
Date
9/1/1992
Author
CWCB
Title
State of Colorado Hatchery Feasibility Study for Endangered Fishes of the Colorado River Basin - Edited Drafts-With Status of Study Tasks and Schedules - 09-01-92
Water Supply Pro - Doc Type
Report/Study
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<br />001860 <br /> <br />e <br /> <br />e <br /> <br />would not be ranked and the study will better provide the CWCB and Recovery Program <br />with facility design and costs, regardless of the location. <br /> <br />TABLE 3 <br /> <br />RATING FACTOR CATEGORIES <br /> <br />Factor Category Maximum Points <br /> <br />WmerSou~e 25 <br />Water Quality 20 <br />Site Physical 20 <br />Biological Considerations 15 <br />Locational Factors 10 <br />Probable Cost 10 <br /> <br />The source and quality of the water supply were determined to be the most important <br />factors in selecting a hatchery site and were weighted the highest maximum point value. <br />Groundwater is highly preferred for rearing hatchery fish because it is free of fish diseases <br />which are prevalent in surface water supplies. This is extremely important to hatchery <br />operations, especially for a hatchery dedicated to holding and propagation of endangered <br />species. Therefore groundwater supplies were given higher point values than surface <br />water supplies. The endangered fishes also require warm water for spawning and <br />growth. Naturally occurring warm water supplies were rated higher, and offer a significant <br />cost advantage over heating cold water supplies. <br /> <br />A matrix was developed which tabulates the evaluation factors and subfactors, allowable <br />rating points and the site evaluation scores for each of the sites. The matrix is presented <br />as Table 4. Site scores for each evaluation factor are totaled at the bottom of the matrix. <br />Sites which are most preferred and best meet the evaluation factors have higher scores. <br /> <br />HATCHERY DESIGN <br /> <br />The purposes of the hatchery/research facility are to meet the endangered fish recovery <br />goals determined by the CWCB staff, specifically: augmentmion of native populations, <br />refugia and broodstock holding and to provide facilities for research. During the initial <br />development of the scope of work,' the CWCB staff determined a range of hatchery <br />production goals for each species of 150,000, 300,000 and 600,000 fish per year. This <br />production was estimated to meet the needs of augmentation and research. The CWCB <br />staff selected a range of production goals because of the uncertainty at this time of the )< <br />actual needs of the recovery program. <br />. ::;ii ~ <br /> <br />7 <br /> <br />:i-:. -,_k-~';'~-~~:'~...-;,._.;-....:; -_ <br /> <br />. ~ _ ;r~t~&~ii~~7::,:.:~_-~._~_." <br /> <br />. ::"'...,j"",:..~_........,:;,;-.- ~"..:..:o-:-;, ~~...._ ...-:";-. _ ~;.<~.~_: .~,>-_ <br /> <br />.. _ . l <br />~.;;',',...>~_:.....;;.:.;:..~...c <br />
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