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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 />