FLOOD10503 ‎(2)‎

• County: Clear Creek
• Basin: South Platte
• Title: Clear Creek County Hydrologic Analysis Document Correspondence
• Date: 2/1/1998
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Study Results
Results of the hydrologic analysis are presented in Table 1. Peak flow data for streams listed in
bold italics were developed by the Corps of Engineers as discussed above.

Com{larison with Previous Studies
Peak discharge values computed for this study were compared to the values obtained in the 1990
Corps study and the existing Flood Insurance Studies for Silver Plume, Georgetown, and Idaho
Springs. The primary hydrologic methodology used in the Flood Insurance Studies was obtained
from Technical Manual No. 1 (reference 7). The comparisons are presented in Table 2 in
Appendix A.

IV. REFERENCES

1. "Analysis of the Magnitude and Frequency of Floods in Colorado," U.S. Geological Survey
(J.E. Vaill) in cooperation with the Colorado Department of Transportation and the Bureau of
Land Management, 1996.

2. "Hydrologic Analysis, Type 15 Flood Insurance Study, Clear Creek County, Colorado," U.S.
Army Engineer District, Omaha Corps of Engineers, September 1990.

3. "Flood Insurance Study, Town of Georgetown, Colorado, Clear Creek County," Federal
Emergency Management Agency, June 5, 1989.

4. "Flood Insurance Study, Town of Silver Plume, Colorado, Clear Creek County," Federal
Emergency Management Agency, July 1978.

5. "Flood Insurance Study, City of Idaho Springs, Colorado, Clear Creek County," Federal
Emergency Management Agency, May 1978.

6. "Flood Insurance Study, City of Empire, Colorado, Clear Creek County," Federal Emergency
Management Agency, June 1976 (Preliminary).

7. "Technical Manual No.1, Manual for Estimating Flood Characteristics of Natural-Flow
Streams in Colorado," Colorado Water Conservation Board in cooperation with the U.S.
Geological Survey (McCain and Jarrett), 1976.

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