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<br />. <br /> <br />. <br /> <br />Data on visitation to the National Monument and Gunnison Gorge <br />,Veri FInd Curecanti National Recreation Area. <br /> <br />Preliminary information on sediment transport in the lower gorge <br /> <br />Basic information on recreational flow needs for rafting <br /> <br />Wild and Scenic river study of the Gunnison <br /> <br />Some information on the relationship between flow timing, level <br />and duration on streamside vegetation. <br /> <br />DATA NEEDED <br /> <br />Information contained in the studies on the AB lateral proposal, <br />BlM management plans, Black Canyon Wilderness <br />- ;!L.....-;_I..~,. -:,"-'" /:::.-.;.;-:: '~.- -~ ::___...;. ~e...por"$ -':;" ~ ~?""-~;";"~ <br />- '- <br /> <br />Some of the available data will need to be refined or compiled for use in the EA/EIS, <br />The data needs list will be refined following initial environmental scoping activities, <br />Some of the presently recognized lacks of data that may need to be gathered or <br />organized include: <br /> <br />Gunnison River spread sheet and basin planning computer model <br />designed to show effects of operational changes, reservoir levels, <br />water uses, water rights, and other factors, <br /> <br />Endangered fish populations by location, habitat needs and <br />requirements, <br /> <br />Effects of Aspinall operation on downstream endangered fish and <br />other species, <br /> <br />Effects of different flow levels and timing of flows on natural <br />and recreational resources, sediment transport, flushing, changes <br />in channel morphology, and bank stability, <br /> <br />Impacts of side drainages on the system. <br /> <br />low flow impacts of eutrophication and anaerobic growth <br />conditions on fish and other river organisms, <br /> <br />Determine if aggradation or degradation of stream channel is <br />occurring. <br /> <br />4 <br /> <br />001010 <br />