FLOOD03385

• Designation Number: 312
• County: Arapahoe
• Community: Littleton
• Stream Name: Lower Dad Clark Gulch, and DFA 0068
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Lower Dad Clark Gulch, and DFA 0068
• Date: 11/1/1990
• Designation Date: 3/1/1991
• Floodplain - Doc Type: Floodplain Report/Masterplan

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TABLE A-1
BASIN PARAMETERS
(Continued)

-...-.--

230

235

240

245

250

255

260

360

365

370
375

380

385

390

25 .0391 .2746 .0947 .0297 18 20 (1)
11 ,0172 .2936 .1515 .0303 19 23 (1)
40 .0625 .5966 .2178 .0286 28 58 (1)
60 .0938 .5492 .2462 .0307 26 43 (1)
17 .0266 .2273 .0947 .0607 17 54 (1)
23 .0359 .3030 .0852 .0450 19 79 (1)
18 .0281 .4072 .2273 .0223 21 69 (1)
42 .0656 .5227 .2273 .0206 25 45 (1)
51 , .0797 .6061 .3409 .0326 28 64 (1)
41 .0641 .5303 .2652 .0332 20 13 (1)
34 .0531 .4830 .2557 .0439 24 80 (1)
8 .0125 .3125 .1515 .0150 19 36 (1)
16 ,0250 .4545 .2178 .0140 23 32 (1)
98 .1531 .6345 .3598 .0100 23 66 (1)

NOTE: Depression storage was taken as the same for all basins: Impervious Areas ~ 0.05 inches
Pervious Areas ~ 0.35 inches

Infiltration rates were one of four types:
Initial Final Decay
Rate Rate Coaff.
(1) 3.0 0.5 0.0018
(2) 3.4 0,52 0.0018
(3) 3.7 0,55 0.0018
(4) 4.5 0.6 0.0018