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RECOMN~NDATIONS <br />Monitoring of larval razorback suckers should be expanded temporally as well as spatially. A <br />greater sampling frequency is needed to determine duration of the spawn and peak spawning <br />times. Another site should be incorporated upstream of the San Rafael to better define spawning <br />location and immigration rates of U'mtahBasfn-spawned fish to the lower Green River (as <br />outlined in the Basinwide Monitoring Plan). <br />Sample the mouth of the San Rafael (and other mouth washes between Green River, Ut and the <br />confluence) with fyke nets to determine relative abundance of adult razorback suckers in the <br />lower Green River. Radio-telemeter adults to locate spawning areas. <br />Initiate a fisheries survey of the San Rafael River. It is likely that this system is a major spawning <br />area for native catostomids. Razorback suckers may be spawning in the lower reaches of this <br />river. Preliminary investigations indicate the San Rafael also supports a strong population of Gila <br />spp. <br />DRAFT ~ 18 <br />