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<br />5. U.S, Army Corps of Engineers, Hydrologic Engineering Center, HEC-2 <br />Water Surface Profile Program, updated version, 1979. <br /> <br />6, Delta Aerial Survey, Orthophoto Contour Maps, Gunnison, Colorado, <br />Scale 1:2400, Contour Interval 2 feet, May 1978, <br /> <br />7, Landmark Mapping, Orthophoto Contour Maps, Gunnison, Colorado, Scale <br />1:2400, Contour Interval 2 feet, May 1980, <br /> <br />15 <br />