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<br />\ <br /> <br />COLORADO RIVER RECOVERY PROGRAM <br />FY 97 ANNUAL PROJECT REPORT <br /> <br />RECOVERY PROGRAM <br />PROJECT NUMBER:CAP-6-ww <br /> <br />I. Project Title: <br />Walter Walker State Wildlife Area rNV/SW A). Evaluation of contaminant impacts on <br />razorback suckers utilizing restored flooded bottomlands in the Upper Colorado River. <br /> <br />II. Principal Investigators: <br />Kathy Holley <br />U.S. Bureau of Reclamation <br />P.O. Box 60340 <br />Grand Junction, CO 81506 <br />(303) 248-0710 <br />FAX (303) 248-0601 <br />Internet e-mail address: <br />KHOLLEY@UC.USBR.GOV <br /> <br />Kevin J. BuW and Steven J. Hamilton <br />U.S. Geological Survey <br />Environmental and Contaminants <br />Yankton Field Research Station <br />31247 436th Avenue <br />Yankton, SD 57078-6364 <br />(605) 665-9217 <br />FAX (605) 665-9335 <br />Internet e-mail address: <br />Steve _ Hamilton@USGS.GOV <br />Kevin _ BuW@USGS.GOV <br /> <br />m. Project Summary: <br />The purpose of this project, and a concurrent one at Adobe Creek-Phase I, is to <br />determine if water quality (i.e., problems with selenium and other inorganic <br />contaminants) alrestored sites will be conducive to supporting razorback sucker during <br />their various life stages. The objectives are to (1) determine if concentrations of <br />selenium and other inorganic contaminants that are bioaccumulated by razorback sucker <br />adults placed in restored backwater habitat have an adverse affect on their reproductive <br />success and (2) to determine survival, growth and bioaccumulation of selenium in <br />razorback sucker larvae that are placed into restored backwater habitats, (3) <br />(Remediation Phase) determine the flows necessary to reduce elevated concentrations of <br />selenium to acceptable concentrations in water and food organisms and still maintain <br />habitat that is attractive to and suitable for endangered fish. <br /> <br />1 <br />