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<br />9. U.S. Department of the Army, Corps of Engineers, Sacramento District,
<br />Internal Memorandum, Basalt, Co~orado Hydrology, August 1976
<br />
<br />10. U.S. Water Resources Council, ~Guide1ines for Determining Flood
<br />Flow Frequency", Bulletin 17A,' 1978
<br />
<br />11. U.S. Department of the Army, Corps of Engineers, Hydrologic Engineer-
<br />ing Center, Computer Program 723-X6-L202A, HEC-2 Water-Surface
<br />Profiles, Davis, Ca~ifornia, March ~982, with updates
<br />
<br />12. Cooper Aeria~ Survey Company, Topographic Maps, Scale 1:1,200 and
<br />1:600, Contour Interval 2 feet: Aspen, Colorado
<br />
<br />13. Be1~ Mapping Company, Topographic Maps, Scale 1:2,400, Contour
<br />Interval 2 feet: Basalt Area,' Eagle and pitkin Counties, Colorado
<br />(October 19, 1981)
<br />
<br />14. Centennial Engineering, Inc., ,Topographic Maps, Scale 1:1,200,
<br />Contour Interval 2 feet: BruSh Creek Road Improvement project,
<br />Colorado (May 1982)
<br />
<br />1S. Wright-McLaugh~in Engineers, ~lood Plain Information, Roaring Fork
<br />and Fryingpan Rivers, Eagle county, Co~orado, February 1978
<br />
<br />16. Wright-McLaughlin Engineers, Flood Plain Information, Crystal
<br />River and Coal Creek, prepare4 for Pitkin County and the Colorado
<br />Water Conservation Board, 1979
<br />
<br />17. Air Photo Surveys, Aeria~ photographs, Basalt, Co~orado, Scale
<br />1:7,200, November 11, ~975
<br />
<br />18. Benchmark Mapping Services, TQpographic Maps, Scale 1:2,400,
<br />Contour Interval 2 feet: Crysta~ River and Coal Creek, Colorado
<br />(May 19, ~978)
<br />
<br />19. Air Photo Surveys, Inc., Topographic Maps, Scale 1:4,800, Contour
<br />Interval S feet: Roaring Fork Valley Area, Colorado (~973)
<br />
<br />20. Falcon Air Maps, Inc., Topographic Maps, Scale 1:2,400, Contour
<br />Interva~ 5 feet: Aspen Area, i Colorado (1964) modified by the U.S.
<br />Army Corps of Engineers (1973)
<br />
<br />21. Nichols Associates, Inc., TOPographic Maps, Sca~e ~:2,400, Contour
<br />Interval S feet: pitkin County Area, Colorado (Ju~y ~984)
<br />
<br />22. U.S. Department of the Interipr, Geological Survey, 7.5-Minute
<br />Series Topographic Maps, Scale 1:24,000, Contour Interval 40 feet:
<br />Highland peak, Colorado (1960)
<br />
<br />23. U.S. Department of the Interior, Geological Survey, 7.S-Minute
<br />Series Topographic Maps. Scal~ 1:24,000, Contour Interval 2 feet:
<br />Basalt, Co~orado (1961)
<br />
<br />48
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