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Last modified
7/14/2009 5:01:46 PM
Creation date
5/20/2009 1:33:44 PM
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UCREFRP
UCREFRP Catalog Number
7728
Author
Stone, R. C. and F. Eiserman.
Title
Background of Flaming Gorge Reservoir Fisheries Investigations.
USFW Year
1979.
USFW - Doc Type
Publication # 78-9,
Copyright Material
YES
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<br />commersoni) are the most dominant species, The Utah chub and white sucker <br />were not recorded in any of the preimpoundment studies, <br /> <br />Associated with these activities, the status of these fisheries and other <br />biological, chemical and physical features of the river environment were <br />documented in a number of publications (Bosley 1960, McDonald and Dotson <br />1960, Binns et aI. 1963, Binns 1967a, Henderson 1963, Vanicek and Pearson <br />1967). As a consequence, not only has much of this information been recorded, <br />but its availability has permitted resource agencies to respond expeditiously <br />and competently to a fishery which has been used by over 60,000 people on a <br />single holiday weekend and more than one million anglers in a season. <br /> <br />ST A TUS OF FISHERIES <br /> <br />As noted, because of the ongoing character of these investigations many <br />segments of these studies have been implemented in actual management <br />practice. To bring out the importance of implementing management techniques, <br />it is important to review briefly the history of the development of this fishery. <br />The 1962 rotenone treatment of the Green River had as one of its objectives a <br />depression of coarse fish populations, particularly carp, to promote <br />reestablishment of a reservoir sport fishery to meet the anticipated demand. <br />Fisherman use of Flaming Gorge Reservoir has far exceeded the most optimistic <br />preimpoundment estimates, Fishing has been excellent, and planted trout have <br />shown good growth. Nongame fish populations have become reestablished in the <br />reservoir but to date, with the exception of the Utah chub, have remained <br />relatively unimportant in interspecific competition. <br /> <br />The original plan for the fishery was to provide family-type fishing requiring a <br />nominal amount of expertise supported by a single coldwater species. Stocking <br />objectives were to sustain catch rates of 0.75 to 0.8 fish per hour at 305 mm (12 <br />in) and approximately 0.45 kg (1.0 lb) average size. It was known that <br />reinfestation of the impoundment by nongame fish would eventually occur, and <br />early efforts were directed at the identification and measurement ofthis process <br />as well as management of sport species. Angling commenced in 1964. The Utah <br />and Wyoming agencies completed reciprocal regulation and management. <br />agreements and established a reciprocal stamp licensing arrangement whereby <br />the reservoir could be treated as a biological and poli tical entity. Because access, <br />marina and campground facilities had been constructed during final stages of <br />dam construction, visitor and angler use developed rapidly. By 1965 access <br />roads and trails other than those designated in preimpoundment planning were <br />almost too numerous to record. Throughout the fishing seasons to 1971 between <br />500,000 and 1,200,000 angler hours were estimated annually. <br /> <br />Harvest was generally estimated at between 600,000 and 800,000 fish with <br />overall harvest rates from 0.56 to 1.28 fish per hour. Mean weight of trout <br />harvested has varied from 0.23 kg (0.50 lbs) during the opening year to <br />maximum means of 0.48 kg (1,05 Ibs), With the exception of the first two <br />seasons, 1964 and 1965, angler use has fluctuated within relatively narrow <br />limits as have the other parameters. <br /> <br />Stocking rates were based upon (1) the prognostications of water level by the <br />U,S. Bureau of Reclamation and on the ability of the biologist to interpret this <br />data as to storage ranges, (2) anticipated hatchery production, (3) evaluation of <br />condition factors in the harvest and (4) fish size called for by the management <br />program. These factors resulted in stocking rates that varied yearly from 23 to <br /> <br />'7 <br />
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