1987-12-01_PERMIT FILE - C1981017 ‎(172)‎

• Permit No: C1981017
• IBM Index Class Name: PERMIT FILE
• Doc Date: 12/1/1987
• Doc Name: General Description of Geology and Hydrology
• Section_Exhibit Name: Chapter III Section C
• Media Type: D
• Archive: No

• - U . S . Soil Conservation Service (SCS) Methods -
Determination of Peak Floras Within
Colorado (1977) SCS Technical Note 50.
HEC Ii Computer Program
Procedures for Determining Peak Flows
in Colorado - Soil Conservation Service
Technical Release No . 55 .
- The California Method
Colorado Water Conservation Board
Technical Manual No . 1
Rational Method
Manual for Estimating Flood Characteristics
of Natural Flow Streams in Colorado .
Additional data was obtained from the following literature
sources :
National Oceanic and Atmospheric Administration
(NOAA) Atlas - Precipitation Frequency Atlas of
the Western United States , Volume IiI
Rainfall frequency Atlas of the United States for
Durations from 30 Minutes to 24 Hours and Return
Periods from 1 to 100 years .
C . Description of the Coal Creek watershed
The primary stream in Coal Basin is Coal
Creek, a perennial stream, tributary to the Crystal River .
This stream drains an area of approximately 26 . 6 square
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