FLOOD01635

• Designation Number: 558
• County: Douglas
• Community: Douglas County Unincorporated
• Title: Flood Hazard Area Delineation - Plum Creek Watershed
• Date: 11/1/2001
• Designation Date: 1/2/2002
• Prepared By: UDFCD, WRC Engineering
• Floodplain - Doc Type: Floodplain Report/Masterplan

I
I Table III-12: SWMM Parameters for West Section of Study Area
BOTTOM
I WIDTH LENGTH OF LEFT RIGHT
TYPE OF OR PIPE CONVEYANCE SIDE SIDE MANNING'S ESTIMATED
CONVEYANCE CONVEYANCE DIAMETER ELEMENT SLOPE SLOPE SLOPE n DEPTH
I ELEMENT ELEMENT (feet) (feet) (feet/feet) (feet/feet) (feet/feet) COEFFICIENT (feet)
202 Channel 10 1,500 0.013 15 15 0.054 15
203 Channel 10 2,500 0.017 15 15 0.060 15
I 204 Channel 10 2,100 0.029 15 15 0.074 15
205 Channel 10 2,200 om 15 15 0.049 15
206 Channel 10 2,000 0.D3 15 15 0.075 15
I 210 Channel 10 2,600 0.02 15 15 0.064 15
211 Channel 10 2,000 0.02 15 15 0.064 15
212 Channel 10 1,100 0.011 15 15 0.051 15
213 Channel 10 2,300 0.017 15 15 0.060 15
I 214 Channel 10 2,100 0.017 15 15 0.060 15
215 Channe I 10 1,400 0.017 15 15 0.060 15
217 Channel 10 3,000 0.03 15 15 0.075 15
I 218 Channel 10 1,700 0.017 15 15 0.060 15
219 Channel 10 2,700 0.027 15 15 0.072 15
220 Channel 10 1,700 0.026 15 15 0.071 15
230 Channel 10 1,500 0.033 15 15 0.078 15
I 2" Channel 20 1,300 0.013 25 25 0.058 10
JJ
234 Channel 20 1,200 0.02 25 25 0.068 10
236 Channel 10 1,500 0.022 15 15 0.067 15
I 237 Channel 10 1.900 0.022 15 15 0.067 15
238 Channel 10 1,300 0.02 15 15 0.064 15
239 Channel 10 1700 0.023 15 15 0.068 15
240 Channel 10 1600 0.047 15 15 0.089 15
I 241 Channel 10 1500 0.D38 15 15 0.082 15
242 Channel 10 2300 0.013 15 15 0.054 15
243 Channel 10 2300 0.021 15 15 0.065 15
244 Channel 10 1800 0.022 15 15 0.067 15
I 245 Channel 10 1100 0.029 15 15 0.074 15
246 Channel 10 1600 0.047 15 15 0.089 15
247 Channel 10 2100 0.D31 15 15 0.076 15
I 248 Channel 10 1600 0.032 15 15 0.077 15
249 Channel 10 1500 0.024 15 15 0.069 15
250 Channel 10 1000 0.024 15 15 0.069 15
251 Channel 10 1500 0.03 15 15 0.075 15
I 252 Channel 10 1700 0.024 15 15 0.069 15
253 Channel 10 700 0.042 15 15 0.085 15
254 Channel 10 2500 0.031 15 15 0.076 15
I 256 Channel 10 2200 0.024 15 15 0.069 15
267 Channel 20 900 0.032 25 25 0.082 10
268 Channel 10 1900 0.032 15 15 0.077 15
269 Channel 10 2500 0.032 15 15 0.077 15
I 274 Channel 10 2400 0.01 10 10 0.049 15
275 Channel 10 3000 0.01 10 10 0.049 15
276 Channel 10 1800 0.036 10 10 0.080 15
I 277 Channel 10 1800 0.018 10 10 0.062 15
278 Channel 10 1400 0.018 10 10 0.062 15
279 Channel 10 1700 0.018 10 10 0.062 15
280 Channel 10 1200 0.018 10 10 0.062 15
I 281 Channel 10 2500 0.018 10 10 0.062 15
I 1II-33