FLOOD01374

• Designation Number: 521
• County: Weld
• Community: Erie, Firestone, Dacono
• Stream Name: Tri-town drainageway, Godding Hollow Basin
• Title: South Weld I-25 Corridor Master Drainage Plan
• Date: 9/8/1999
• Prepared For: Weld County
• Prepared By: Anderson Consulting Engineers, Inc.
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table 4.5 Hydrologic Parameters for Future Conditions.

Basin Basin ' , 'Distimce Av"-rage nepression Storage ' fufiltraiiohRates :HortoIi !.~
Subbasin ' to Basrn Basin ' Percent , '(inches) ',(in/hr) ,
No. Area " Lengtli Centroid Slope impel"\" ,\ Fin,a!< Decay'
, (acres), (ft) (ft) (ft/ft) , .' ' Pervious .-Imperv . "fuilia! Rate:
, " ,', ' GODDIN(JIioLLOWBASIN ", , ",',,' ", ' "
GHSB1 779.3 6300 1800 I 0.004 I 39.7 0.4 0,1 3.0 I 0.5 0.0018
GHSB2 284.2 7300 3800 0.003 I 65.i 0.4 0.1 3.1 0.5 0.0018
GHSB3 687.9 10000 3800 I 0.007 I 63.4 0.4 0.1 3.8 0.6 0.0018
GHSB4 772.4 I 9000 I 3300 I 0.008 I 55.5 0.4 0.1 4.3 0.6 0.0018
GHSB5 836.8 I 9400 3300 0.007 41.2 0.4 0.1 4,0 0.6 0.0018
GHSB6 886.5 9600 3000 0.007 51.0 0.4 I 0.1 4.2 I 0.6 0.0018
GHSB7 I 946.2 10700 I 3000 0.007 43.5 0.4 0.1 3.8 0.6 0.0018
GHSB8 265.5 I 6800 I 1800 0.010 64.0 0.4 0.1 3.5 0.5 0.0018
GHSB9 185.4 I 6200 I 1400 0.01l I 68.0 0.4 0.1 3.3 0.5 0.0018
GHSB10 142.5 3700 800 0.018 I 72.8 0.4 0.1 3.5 0.5 0.0018
GHSB11 117.3 I 3800 900 0.012 60.1 0.4 0.1 3.0 0.5 0.0018
GHSB12 65.1 3700 1400 I 0.013 42.8 0.4 0.1 3.0 0.5 0.0018
GHSB13I 193.2 4700 1800 I 0.019 78.1 0.4 0.1 3.0 0.5 0.0018
GHSB14 154.1 4600 1900 0.019 75.0 0.4 I 0.1 3.0 I 0.5 0.0018
GHSB15 61.3 I 2250 700 0.013 81.2 0.4 I 0,1 3.0 I 0,5 0.0018
GHSB16 131.1 3700 1600 0.015 I 71.0 0.4 0.1 3.0 I 0,5 0.0018
GHSB17 223.1 4400 1500 0.026 84.5 0.4 0.1 3.1 0.5 0.0018
GHSB20 154.4 4400 1800 0.012 67.5 0.4 0.1 3.0 0.5 0.0018
GHSB21 372.0 I 6700 3000 0.009 60.3 0.4 0,1 3,8 0.6 0.0018
GHSB22 321.0 5900 I 2700 0.015 70.0 0.4 0.1 3.3 0.5 0.0018
GHSB23 418.5 6300 3000 0.012 I 36.4 0.4 0.1 3.1 0.5 0.0018
GHSB24I 376.9 6000 2300 0.015 37.0 0.4 0.1 3.0 0.5 0.0018
GHSB25I 83.2 3300 800 0.014 32.3 0.4 0.1 3.3 0.5 0.0018
GHSB26I 38.6 3600 1100 0.017 73.4 0.4 I 0.1 3.3 0.5 0.0018
GHSB27 407.7 7800 2800 0.019 22.1 0.4 0.1 3.2 0.5 0.0018
GHSB30 437.5 8300 4300 0.014 76.2 0.4 0.1 3.0 0.5 0.0018
GHSB31 215.4 6900 1600 0.013 68.1 0.4 0.1 3.3 0.5 0.0018
GHSB32I 599.3 9600 4000 0.015 22.1 0.4 I 0.1 3.3 I 0.5 0.0018
GHSB33 210.9 6200 2400 0.008 15.8 0.4 0.1 3.1 I 0.5 0.0018
GHSB34I 208.7 I 7800 3900 0.019 82.4 0.4 0.1 3.2 1 0.5 0.0018
GHSB35 95.7 4500 1600 0.014 73.6 0.4 0.1 3.0 0.5 0.0018
GHSB36 348.6 ' 7100 I 1900 0.014 I 61.8 0.4 0.1 3.1 0.5 0.0018
GHSB37 541.0 I 7400 I 2500 I 0.026 69.6 0.4 I 0.1 3.3 I 0.5 0.0018
GHSB40 225.6 I 5300 I 2300 I 0.012 65.6 0.4 0.1 3.5 0.5 0.0018
GHSB41I 342.8 I 6200 I 2300 0.011 I 48.0 0.4 I 0.1 3.7 0,5 0.0018
GHSB42I 122.5 2800 I 1400 0.008 79.4 0.4 0.1 4.2 0.6 0.0018
GHSB43I 156.5 I 5300 2600 I 0.004 I 75.4 0.4 0.1 3.2 I 0.5 0.0018

T;\OPEMCoweldOJ\coweldOl tbl 4-5. wpd

4.20

September B. 1999