FLOOD01902

• County: Pitkin
• Community: Aspen
• Title: Drainage Facility Capacity Analysis of City of Aspen
• Date: 9/1/1998
• Prepared For: Aspen
• Prepared By: WRC Engineering, Inc.
• Floodplain - Doc Type: Project

TABLE 1: CUHP SUB-WATERSHED PARAMETERS

WATERSHED
DESIGNATION

BASIN
AREA
(acres)

BASIN
AREA
(mi2)

BASIN
lENGTH
(feet)

BASIN CENTROID CENTROID IMPERVIOUS
lENGTH lENGTH lENGTH AREA SLOPE
(miles) (feel) (miles) (%) (%)

PERVIOUS IMPERVIOUS
T c DETENTION DETENTION
(minutes) (inches) (inches)

INfilTRATION
INITIAL DECAY FINAL HYDROLOGIC
RATE COEFF, RATE SOil
(in/h,) (sec-1) (in/h') GROUP

1 63.85 0.100 2300 .44 800 .15 6.1 4.47 32.2 ,35 0.1 4.50 0.0018 0.60 B
2 37.33 0,058 2200 ,42 600 .11 25.5 1.57 22.2 .35 0.1 4.50 0.0018 0.60 B
3 55.83 0.087 3350 .63 1200 .23 70.0 1.19 28.6 .35 0.1 4.50 0.0018 0.60 B
4 52,84 0.083 1900 ,36 1000 .19 30.0 4.49 21,3 .35 0.1 4.50 0.0018 0.60 B
5 31.47 0.049 3200 .61 1500 .28 19.8 4.02 22.6 .35 0.1 3.00 0.0018 0.50 C
6 44.19 0.069 2000 .38 850 .16 10.0 9.31 12.4 .35 0.1 3.00 0.0018 0.50 D
7 25.78 0.040 1800 .34 600 .11 40.0 1.31 20.0 .35 0.1 4.50 0.0018 0.60 8
8 53.77 0.084 2050 ,39 600 .11 20,0 1.44 21.4 .35 0.1 4,50 0.0018 0.60 B
9 42.08 0.066 2850 .54 1460 ,28 15.0 8.32 15.2 .35 0.1 3.00 0.0018 0.50 C
10. 9.52 0.015 650 .12 350 .07 10.0 4.03 13.6 .35 0.1 4.50 0.0018 0.60 B
11 49.04 0.077 4010 ,76 2070 .39 65.0 3.26 32.3 .35 0,1 4.50 0.0018 0.60 8
12 47.2 0.074 3600 .68 1200 ,23 40.0 2.44 30.0 .35 0.1 4.50 0.0018 0.60 B
13 40.88 0.064 3190 .60 1900 .36 10.0 6.78 23.0 .35 0.1 4.50 0.0018 0.60 B
14 118.9 0.186 5300 1.00 3000 .57 10.0 7.84 N/A .35 0.1 4.50 0.0018 0.60 B
15 7.61 0.012 1500 .28 380 .07 10.0 7,17 13.1 .35 0,1 4.50 0.0018 0.60 B
16 107.05 0.167 5250 .99 2550 .48 25.0 7.73 N/A .35 0.1 4.50 0.0018 0.60 B
17 28,97 0.045 2400 .45 640 .16 70.0 2.66 19.9 .35 0.1 4.50 0.0018 0,60 8
18 31,57 0.049 2100 .40 800 .15 60.0 2.99 20.2 .35 0.1 4.50 0,0018 0.60 B
19 50.9 0.080 3600 .68 1330 .25 70,0 2.82 22.8 .35 0,1 4.50 0.0018 0.60 8
20 51.44 0.080 3150 .60 1500 .28 10.0 8.68 15.4 .35 0.1 3.00 0.0018 0.50 C
21 79.88 0.125 3800 .72 2000 .38 10.0 8.62 18.0 .35 0.1 4.50 0.0018 0.60 B
22 117.5 0.184 4950 .94 2400 .45 10.0 7.53 N/A ,35 0.1 3.00 0.0018 0.50 D
23 247.96 0.387 5250 .99 1650 .31 10.0 7.03 N/A .35 0.1 3.00 0.0018 0.50 D
24 95.23 0.149 3950 .75 1550 .29 10.0 8.04 N/A .35 0.1 3.00 0.0018 0.50 D
25 12.66 0.020 1100 ,21 500 .09 40.0 3.35 16.7 .35 0.1 4.50 0.0018 0,60 B

AspenCUflP.Jlls
CUH~lnputSummary.T.blel

\/VRC Engineering
PN 1963

9111191
10:06 AM