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<br /> <br />I <br />I <br />,I <br />'I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />II <br />.1 <br />II <br />I <br />I <br />I <br /> <br />Figure 11 Map of Photograph Locations <br /> <br />Coordinated Reservoir Operations Study (CROS) <br />General Location Map Showing Photograph Loca 'ons <br /> <br />_. Major reservoirs <br />/\I Roads.shp <br />. Cities <br />('~ Streams <br />Basin Boundary <br /> <br /> <br />N <br /> <br />t <br /> <br />. Aerial Monitoring <br /> <br />The USF&WS obtained aerial photography of the critical habitat during 1997. However, the photography <br />was not done during coordinated reservoir operations. Photography during coordinated reservoir <br />operations and during the peak, if coordinated reservoir operations did not occur on the peak, would be <br />helpful. Ideally, we would like to obtain photography for a variety of flows so that we can determine the <br />affect various peaks have on the habitat and identify any problems associated with the peak flows. <br /> <br />Aerial monitoring of the entire Colorado River and tributaries downstream of each participating reservoir <br />during a peak at approximately bank-full conditions would also be very helpful in determining where our <br />"pinch points" are and the potential for flood damages. This photography could be oblique in nature and <br />would not have to be continuous. Hopefully, it could be obtained at minimal added cost at the same time <br />the IS-Mile Reach is flown in the future. Peak flows of the magnitude that occurred in 1997 were very <br />close to, if not greater than, bank-full conditions for many reaches of the river and we hope that some <br />funding can be made available in the future for aerial photography when similar conditions exist. <br /> <br />20 <br />