FLOOD04416

• Designation Number: 304
• County: Adams
• Community: Unincorporated Adams County
• Stream Name: Big Dry Creek, (ADCO), North area tributaries
• Basin: South Platte
• Title: Flood Hazard Area Delineation - Big Dry Creek, ADCO, North Area Tributaries
• Date: 7/1/1989
• Designation Date: 1/1/1990
• Floodplain - Doc Type: Floodplain Report/Masterplan

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I TABLE III 2 <CONT.)
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I SUB-BASIN CHARACTERISTICS
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SUB-BASIN AREA AREA LENGTH LENGTH TO EXISTING FUTURE BASIN SLOPE PERVIOUS IMPERVIOUS INITIAL FINAL DECAY
.' (AC. ) (SQ. MI.) (FT) CENTROID % % (FT/FT) RETENTION RETENTION INFILTRATION INFILTRATION RATE
(FT) IMPERVIOUS IMPERVIOUS (in/hr) (in/hr)
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I MORRIS CREEK
501 41.8 0.065 1300 400 2 35.0 0.015 0.35 0.1 3.000 0.50 0.0018
502 46.1 0.072 3300 600 2 35.0 0.015 0.35 0.1 3.300 0.52 0.0018
503 91.1 0.142 3200 1000 2 37.0 0.021 0.35 0.1 3.000 0.50 0.0018
. 504 112.2 0.175 4500 2100 2 33.5 0.023 0,35 0.1 3.000 0.50 0.0018
505 84.0 0.131 1700 900 2 33.5 0.024 0.35 0.1 3.000 0.50 0.0018
506 92.9 0.145 3400 1500 2 35.0 0.024 0.35 0.1 3.000 0.50 0.0018
I 507 111. 1 0.174 2600 1000 12 30.5 0.027 0.35 0.1 3.000 0.50 0.0018
508 39.5 0.062 3200 2400 2 20.0 0.009 0.35 0.1 3.000 0.50 0.0018
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I TOTAL 618.7 0.967
SHAY DITCH
601 48.5 0.076 2350 800 2 51.0 0.014 0.35 0.1 3.000 0.50 0.0018
I 602 131.9 0.206 4750 2050 2 65.0 0.020 0.35 0.1 3.000 0.50 0.0018
603 92.6 0.145 3800 2000 2 65.0 0.021 0.35 0.1 3.000 0.50 0.0018
604 78.5 0.123 2600 1200 2 75.0 0.018 0.35 0.1 3.000 0.50 0.0018
I 605 167.2 0.261 3900 1400 2 71.0 0.012 0.35 0.1 3.000 0.50 0.0018
606 53.3 0.083 2100 700 4 35.0 0.033 0.35 0.1 3.000 0.50 0.0018
607 130.1 0.203 5200 3100 7 35.0 0.019 0.35 0.1 3.000 0.50 0.0018
608 117.5 0.184 4700 2400 10 35.0 0.018 0.35 0.1 3.000 0.50 0.0018
I 609 163.1 0.255 4750 2700 4 38.6 0.032 0.35 0.1 3.000 0.50 0.0018
610 92.9 0.145 4500 2200 4 69.0 0.021 0.35 0.1 3.000 0.50 0.0018
611 60.1 0.094 3650 1100 10 35.0 0.019 0.35 0.1 3.000 0.50 0.0018
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TOTAL 1135. 7 1. 775
I MUSTANG RUN
701 25.0 0.039 1950 750 2 8.0 0.021 0.35 0.1 3.000 0.50 0.0018
702 82.2 0.128 3350 1500 2 67.5 0.014 0.35 0.1 3.000 0.50 0.0018
703 149.3 0.233 3800 1450 3 65.0 0.016 0.35 0.1 3.000 0.50 0.0018
I 704 55,2 0.086 2650 1000 2 65.0 0.015 0.35 0.1 3.000 0.50 0.0018
705 52.9 0.083 2900 1500 3 63.5 0.018 0.35 0.1 3.000 0.50 0.0018
706 59.6 0.093 2750 1100 2 53.0 0.017 0.35 0.1 3.000 0.50 0.0018
I 707 71. 9 0.112 3550 1450 2 52.0 0.022 0.35 0.1 3.000 0.50 0.0018
708 64.0 0.100 2400 1300 3 62.0 0.019 0.35 0.1 3.000 0.50 0.0018
709 103.6 0.162 2700 950 15 35.0 0.017 0.35 0.1 3.000 0.50 0.0018
710 115.9 0.181 2900 1000 9 41.0 0.026 0.35 0.1 3.000 0.50 0.0018
I 711 55.8 0.087 2300 1000 14 39.5 0.028 0.35 0.1 3.000 0.50 0.0018
712 75.2 0.118 2900 600 5 51.0 0.034 0.35 0.1 3.000 0.50 0.0018
713 23.0 0.036 1800 700 2 65.0 0.022 0.35 0.1 3.000 0.50 0.0018
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TOTAL 933.6 1. 459