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<br />streams in Colorado in at least the last 100 years. A simple but well defined rainfall-runoff relation was
<br />developed for floods in Colorado. The relation indicates that had 5.25 inches of rainfall occurred during
<br />the June 3, 1952 rainstorm, a peak flow ranging from 5,000 to 9,000 cubic feet per second. Thus, the
<br />actual peak rainfall runoff of 70 cubic feet per second is inconsistent with other known floods in
<br />mountainous areas of Colorado. The hydroclimatologic analyses of the precipitation at the Cimarron
<br />3SE gages indicates that there are other questionable precipitation readings. This review demonstrates
<br />the need and an approach to assess the validity and accuracy of extreme rainfall data used in water-
<br />resources investigations. Because of the broader implications to the flood comminity, this assessment
<br />of the Cimarron storm will be submitted with minor changes to a scientific joumal (probably Water
<br />Resources Research), with the appropriate acknowledgement of our cooperative efforts. If you have
<br />any questions or comments, please call me at 303-236-6447.
<br />
<br />Respectfully Submitted,
<br />
<br />f),uY0~
<br />
<br />Robert D. Jarrett
<br />Hydrologist
<br />
<br />End.
<br />eer Joe Capesius, USGS
<br />Loren Crow, Consulting Meteorologist, Denver
<br />Nolan Doesken, Colorado Climate Center, CSU
<br />John Henz, Henz Meteorological Services, Denver (reviewer)
<br />Brian Hyde, Colorado Water Conservation Board, Denver
<br />Doug Laiho, Ayres and Associates, Ft Collins
<br />Larry Lang, Colorado Water Conservation Board, Denver
<br />Veme Leverson, Bureau of Reclamation, Denver
<br />Dave Lystrom, USGS, Lakewood
<br />Alan Pearson, Office of the State Engineer, Denver
<br />Jon Pruess, Colorado State UniverSity
<br />Veme Schneider, USGS, Reston,VA
<br />Lou Schreiner, Bureau of Reclamation, Denver
<br />Mark Smith, USGS, Lakewood (reviewer)
<br />Mark Solak, North American Weather Consultants, Salt Lake City (reviewer)
<br />Steve Spann, Colorado Division of Water Resources, Denver
<br />Larry Tunnell, National Weather Service, Denver
<br />Ed Vaill, USGS, Grand Junction
<br />Ken Wahl, USGS, Lakewood
<br />Jack Weeks, USGS, Lakewood
<br />Tom Yorke, USGS, Reston,VA
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