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Last modified
8/11/2009 11:32:58 AM
Creation date
8/10/2009 5:04:41 PM
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UCREFRP
UCREFRP Catalog Number
9551
Author
Brunson, R. E., K. D. Christopherson and T. N. Hedrick.
Title
Evaluation of Nonnative Fish Escapement from Starvation Reservoir.
USFW Year
2007.
USFW - Doc Type
119,
Copyright Material
NO
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CONCLUSIONS <br />• Smallmouth bass, walleye, and yellow perch are escaping from Starvation Reservoir. <br />Given the information collected in 2005, it appears all three species are escaping from the <br />reservoir at a rate of less than 0.01 fish/AF (0.0028 fish/AF for smallmouth bass, 0.0005 <br />fish/AF for walleye, and 0.0006 fish/AF for yellow perch). Since 1985, the reservoir has <br />spilled an average of 5,017 AF/year for an average escapement of less than 20 fish each <br />year (14 smallmouth bass, 3 walleye, and 3 yellow perch) based on information collected <br />in 2005. <br />• Fish captured from the outlet basin were predominantly those of a Coldwater species <br />assemblage similar to those found in the Strawberry River (though escapement here could <br />be underestimated), whereas those captured from the spillway basin were predominantly <br />of a cool water assemblage similar to those found lower in the Duchesne River drainage <br />(beginning around RM 41). <br />• It is likely that smallmouth bass currently reproduce in the Duchesne River below the <br />Myton Diversion and it is certain that they reproduce in the middle Green River. <br />Smallmouth bass removal efforts conducted by the Recovery Program may offset the <br />need to prevent escapement of nonnatives from Starvation Reservoir. However, with the <br />increased emphasis on removing smallmouth bass beginning in 2007, it may be more <br />important now to eliminate the reservoir as a potential source of smallmouth bass. <br />• The Division normally sees a few adult walleye each year during sampling efforts in the <br />Green River. In 2006, however, Division crews working in the lower Green River <br />captured 48 walleye during the spring Colorado pikeminnow abundance estimates. While <br />21 <br />
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