2022-02-09_PERMIT FILE - M2021046 ‎(2)‎

• Permit No: M2021046
• IBM Index Class Name: Permit File
• Doc Date: 2/9/2022
• Doc Name Note: Appendix N JESIK Surface Water Management
• Doc Name: Adequacy Review Response
• From: Zephyr Gold USA Ltd
• To: DRMS
• Email Name: TC1
• Email Name: MAC
• Media Type: D
• Archive: No

OF Report OF filename:Canon City.idf
Hydrology Studio v 3.0.0.20 12-15-2021
Equation Intensity= B/(Tc+D)^E(in/hr)
Coefficients 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
B 0.0000 58.1215 0.0000 57.1446 58.8780 63.5498 67.7965 72.2003
D 0.0000 10.3000 0.0000 10.3000 10.3000 10.4000 10.5000 10.6000
E 0.0000 0.8106 0.0000 0.7542 0.7303 0.7097 0.6986 0.6898
Minimum Tc=5 minutes
Tc Intensity Values(in/hr)
(min) 1-yr 2-yr 3-yr 5-yr 10-yr 25-yr 50-yr 100-yr
Cf 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00
5 0 6.37 0 7.30 8.03 9.13 9.99 10.85
10 0 5.06 0 5.90 6.53 7.48 8.22 8.96
15 0 4.24 0 5.00 5.56 6.40 7.06 7.71
20 0 3.66 0 4.36 4.88 5.63 6.23 6.82
25 0 3.23 0 3.89 4.36 5.06 5.60 6.14
30 0 2.90 0 3.52 3.96 4.60 5.11 5.61
35 0 2.64 0 3.22 3.64 4.24 4.71 5.18
40 0 2.43 0 2.98 3.37 3.94 4.38 4.82
45 0 2.25 0 2.77 3.14 3.68 4.10 4.52
50 0 2.10 0 2.60 2.95 3.46 3.86 4.26
55 0 1.96 0 2.44 2.78 3.27 3.65 4.03
60 0 1.85 0 2.31 2.64 3.10 3.47 3.83
Cf=Correction Factor applied to Rational Method runoff coefficient.
Colorado, USA
11
100yr
10 -50yr
9 -25yr
8 - 10yr
5yr
2yr
6
c
5
c
4
3
2
4-T-
0 5 10 15 20 25 30 35 40 45 50 55 60
Time (min)
B47