2021-12-29_PERMIT FILE - M2021009 ‎(2)‎

• Permit No: M2021009
• IBM Index Class Name: Permit File
• Doc Date: 12/29/2021
• Doc Name Note: Appendix 4 - Hyrdrology
• Doc Name: Adequacy Review Response
• From: Lewicki & Associates/Young Ranch Resource, LLC
• To: DRMS
• Email Name: AME
• Email Name: MAC
• Media Type: D
• Archive: No

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NOAA Atlas 14, Volume 8, Version 2
Location name: Colorado, USA* "
Latitude: 39.75520, Longitude: -105.45210
Elevation: 8407.25 ft**
'source:ESRI Maps 1 O
-source:USGS
POINT PRECIPITATION FREQUENCY ESTIMATES
Sanja Perica,Deborah Martin,Sandra Pavlovic,Ishani Roy,Michael St.Laurent,Carl Trypaluk,Dale
Unruh,Michael Yekta,Geoffery Bonnin
NOAA, National Weather Service,Silver Spring,Maryland
PE-tabular I PF_graphical I Maps_&_aerials
PF tabular
PDS-based point precipitation frequency estimates with 90% confidence intervals (in inches)1
Average recurrence interval (years)
Duration����F- �����
1 2 5 10 25 50 100 200 500 1000
5-min 0.189 0.230 0.297 0.354 0.435 0.498 0.564 0.631 0.722 0.793
F5 in
(0.146-0.246) (0.177-0.298) (0.228-0.386) (0.271-0.463) (0.322-0.590) (0.361-0.687) (0.395-0.797) (0.425-0.919) (0.469-1.08) (0.502-1.21)
1 0-min 0.277 0.336 0.435 0.518 0.637 0.730 0.825 0.924 1.06 16
(0.214-0.360) (0.259-0.436) (0.334-0.566) (0.396-0.678) (0.472-0.865) (0.529-1.01) (0.578-1.17) (0.623-1.35) (0.687-1.59)F(01-1.77)
F15-min 0.338 0.410 0.530 0.632 0.776 0.890 1._1 1.29 1.42
(0.261-0.439) (0.316-0.532) (0.407-0.690) (0.483-0.827) (0.575-1.05) (0.645-1.23) F(0.7211.42) (0.759-1.64) (0.837-1.94) (0.896-2.16)
F30-min 0.459 0.557 0.718 0.855 1.05 1.20 1.36 1.52 ) ( 190 )(0.355-0.596) (0.429-0.722) (0.552-0.935) (0.654-1.12) (0.777-1.42) (0.869-1.65) (0.950-1.92) (1.02-2.21) [1�73
1.1 -2.60 1.20-2.90
F60-min 0.579 0.695 0.885 1.04 1.26 . 1.60 1.78 2.01 218(0.447-0.751) (0.536-0.902) (0.680-1.15) (0.797-1.36) (0.933-1.71) F-14-3 -
03-1.97) (1.12-2.26) (1.19-2.58) (1.30-3.00) F(1.38-3.32)
2-hr 0.699 0.834 1�0-5 -
1 1.23 1.48 1.66 1.85 2.03 F(14
.28 2.46
(0.545-0.899) (0.649-1.07) F(O.811.36) (0.950-1.60) (1.10-1.97) (1.21-2.26) (1.31-2.58) (1.38-2.93) 9-3.38) (1.57-3.72)
F-3-hr 0.783 0.925F(o91215
1.341.60 1.79 1.98 2.18 2.43 2.6(0.614-1.00) (0.724-1.18) .48) (1.04-1.73) (1.20-2.13) (1.32-2.42) (1.41-2.76) (1.49-3.11) (1.60-3.58) (1.68-3.93)
F6-hr 0.969 3 1.40 1.63 1.95 2.20 2.46 2.72 3.09 3.37(0.768-1.23) F-1�1
891.43) (1.10-1.78) (1.27-2.08) (1.48-2.58) (1.63-2.96) (1.77-3.40) (1.89-3.88) (2.06-4.54) (2.19-5.03)
F12-hr 1.22 1 1.75 2.06 3 2.92 3.33 3.79 4.42 4.94(0.978-1.54) Fl�-4-
-1.78) (1.40-2.21) (1.63-2.61) F2�5
.36) F(2.20-3.93) (2.44-4.62) (2.66-5.40) (2.99-6.50) (3.25-7.33)
24-hrF(1.2
1.50 1.74 2.18 2.60 3.26 3.82 4.44 5.12 6.09 6.90
1-1.87) (1.1 .17) (1.76-2.73) (2.08-3.27) (2.56-4.33) (2.93-5.14) (3.29-6.12) (3.64-7.27) (4.18-8.91) (4.58-10.2)
2-day 1.77 2.06 2.61 3.14 3.97 4.69 5.48 6.36 7.63 8.68
F(1.44-2.18) (1.68-2.54) (2.12-3.23) F2.541 .90) (3.16-5.25) (3.63-6.26) (4.11-7.52) (4.58-8.97) (5.29-11.1) (5.83-12.7)
3-day 1.94 2.24 2.82 3.38 4.28 5.07 5.94 6.91 8.32 9.49
(1.59-2.38) (1.84-2.75) F(2.31-3.47) (2.75-4.19) (3.44-5.64) (3.95-6.75) (4.48-8.12) (5.01-9.72) F(5. 1-12.0) 1 (6.42-13.8)