See attached for additional information. The ratio of PMP to 100-year rainfall in Colorado is more likely to be 6 to 1 than 2 to 1 or 3 to 1. Although the Site Specific PMP study prepared by the NWS for Cherry Creek did use HMR 52 procedures, it used precipitation values from HMR 55A which are storms explicitly from the front range of the Rocky Mountains and not precipitation values from HMR 52. The review done by Mr. John T. Riedel conducted in February 1999 was determined to be an independent review of the Site Specific study methodology for Cherry Creek. We are still accepting public comments.
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