FLOOD01923

• Designation Number: 462
• County: Douglas
• Community: Unincorporated Douglas County
• Stream Name: Willow, Little Willow, East Willow Creeks
• Title: Flood Hazard Area Delineation - Willow Creek, Little Willow Creek, East Willow Creek, Douglas County, CO
• Date: 12/1/1996
• Designation Date: 7/1/1997
• Floodplain - Doc Type: Floodplain Report/Masterplan

Table 3.5
SWMM Element Parameters
OVERBANK! OVERBANK!
WIDTH INVERT SIDE SLOPES SURCHARG WIDTH INVERT SIDE SLOPES SURCHARG
GUTTER GUTTER OR DIAM LENGTH SLOPE HORIZ TO VERT MANNING DEPTH GUTTER GUTTER OR DIAM LENGTH SLOPE HORIZ TO VERT MANNING DEPTH
NUMBER CONNECTION (FT) (FT) (FTIFT) L R N (FT) NUMBER CONNECTION (FT) (FT) (FTIFT) L R N (FT)
51 251 1
251 50 10 2050 0,02 50 35 0.076 5 230 31 10 1800 0.03 20 20 0.096 5
50 250 1 31 32 1
250 49 10 1200 0,02 50 35 0,076 5 105 305 1
49 249 1 305 104 15 3400 0.015 5 10 0.068 10
249 47 10 1700 0.021 35 35 0.078 5 OVERFLOW 30 3400 0.015 50 50 0.068 10
OVERFLOW 30 1700 0.021 50 50 0.078 20 104 304 1
47 247 1 304 100 15 4800 0.057 5 5 0.111 5
247 45 15 1250 0.029 1.5 1,5 0.065 5 OVERFLOW 30 4800 0.057 50 50 0.111 10
OVERFLOW 30 1250 0.029 50 50 0.065 20 100 300 1
55 255 1 300 95 10 1800 0.067 2 2 0.117 5
255 54 5 3230 0,03 2 2 0.088 4 OVERFLOW 30 1800 0.067 50 50 0.117 20
OVERFLOW 30 3230 0.03 50 50 0.088 20 95 395 1
54 254 1 395 94 10 2200 0.04 2 2 0.114 5
254 53 10 1100 0.027 2 2 0,083 5 OVERFLOW 30 2200 0.04 50 50 0.114 20
OVERFLOW 30 1100 0,027 50 50 0.083 20 94 394 1
53 253 1 394 92 10 3300 0.028 2 2 0.105 5
253 48 10 2200 0.019 2 2 0.073 5 OVERFLOW 30 3300 0.028 50 50 0.105 20
OVERFLOW 30 2200 0.019 50 50 0.073 20 93 92 1
48 248 1 92 392 1
248 47 10 1650 0.02 3 3 0.075 5 392 90 5 2400 0.02 2 2 0.076 5
OVERFLOW 30 1650 0.02 50 50 0.075 20 OVERFLOW 30 2400 0.02 10 10 0.076 10
38 238 1 90 390 1
238 37 10 1520 0.022 10 10 0.079 10 390 89 5 1500 0.017 2 2 0.071 5
37 237 1 OVERFLOW 30 1500 0.017 10 10 0,071 10
237 36 10 1650 0.024 10 10 0.081 10 89 402 1
36 236 1 402 404 100 0.01 0.020
236 32 10 3050 0.02 10 10 0.076 10 404 388 1
32 232 1 388 86 5 2660 0.023 2 2 0.080 5
232 27 10 2650 0,021 10 10 0.077 10 30 2660 0.023 10 10 0.080 10
25 225 1 86 386 1
225 87 15 4200 0.02 3 3 0.074 5 386 85 15 2180 0.01 2 2 0.056 5
OVERFLOW 30 4200 0.02 50 50 0.074 20 30 2180 0.01 10 10 0.056 15
87 21 1 85 80 1
29 229 1 80 99 1
229 26 20 2400 0.03 20 20 0,088 5 183 383 1
26 226 1 383 99 20 1900 0.04 30 30 0.099 5
226 27 20 1200 0.05 20 20 0.107 5
98 398 1
398 97 3 3380 0.03 3 3 0.070 4
97 397 1
397 95 3 2200 0,08 3 3 0.070 4
OVERFLOW 50 2300 0,08 20 20 0.070 10
103 303 1
303 100 3 1800 0.03 3 3 0.070 4
OVERFLOW 50 1800 0.03 20 20 0,070 10
30 230 1