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 (Continued).

B~sfu Basin ' Distarice ' Average Depression- St9rage Infiltration Rates: Horton's
SubbaSIn Area, Length to'Basiii . Basin , : Percent " " (inches)' , , (in/hr) " Decay:
No.' Centroid ' Slb~e "rIhpeDi. PerviOUS r 1mperV . ' '"
,,': ,(acres)' (ft) "', (ft) , , (ft/ft} ,', :,:",:-;', ,: : Initial, Final' ~ate
" '" ",. '
.." ,. ' ,
"",' " "'", ' '" TRI-TOWN BASIN ' ':','
TTSB51 I 560.0 7900 4200 0.005 I 61.6 0.4 0.1 3.8 0.6 0.0018
TTSB52 610.6 8300 2800 0.008 I 48.6 0.4 0.1 4.4 0.6 0.0018
TTSB53 640.4 8700 3400 0.009 I 40.5 0.4 0,1 4.4 I 0.6 0.0018
TTSB54 346.9 9200 2400 I 0.008 23.4 0.4 0.1 4.3 0.6 0.0018
TTSB55 173.9 I 4900 2300 0.014 41.0 0.4 0.1 4.4 0.6 0.0018
TTSB56 27.3 I 1800 700 0.003 41.7 0.4 0.1 4.5 0.6 0.0018
TTSB57 14.2 1300 600 0,004 39.0 0.4 0.1 4.5 0.6 0.0018
TTSB58 I 17.3 1200 400 0.004 36.7 0.4 I 0.1 4.5 0,6 0.0018
TTSB59 I 19.4 1800 700 0.005 I 35.1 0.4 0.1 4.5 I 0.6 0.0018
TTSB60 53.7 3100 1300 0.006 I 48.1 0.4 0.1 3.4 I 0.5 0.0018
TTSB61 250.8 I 6300 1600 0.011 27.1 0.4 I 0.1 3.4 I 0.5 ' 0.0018
TTSB62 108.1 I 3500 1100 0.014 50.0 0.4 0.1 3.0 I 0.5 0.0018
TTSB63 288.0 5150 2200 0.Q15 47.2 0.4 0.1 3.1 0.5 0.0018
TTSB70 683.9 8800 4200 0.007 27.1 0.4 I 0.1 3.9 0.6 0.0018
TTSB71 114.3 3500 1700 0.016 27.1 0.4 I 0.1 4.6 0.7 0.0016
TTSB72 392.8 I 5100 2400 0.015 47.5 0.4 0.1 4.5 0.6 0.0018
TTSB73 I 115.3 4100 1900 0.016 I 62.5 0.4 0.1 4,5 0.6 0.0018
TTSB74 I 324.3 5900 I 2500 0.011 44.2 0.4 0.1 4.5 0.6 0.0018
TTSB75 722.3 8500 I 4200 0.Q15 39.7 0.4 ' 0.1 4.2 0.6 0.0018
TTSB76 49.2 2600 900 0.012 50.0 0.4 0.1 4.5 0.6 0.0018
TTSB77 37.2 2700 800 0.020 50,0 0.4 I 0.1 4.5 0.6 0.0018
TTSB78 36.4 2400 1100 0.011 50.0 0.4 I 0.1 4.5 0.6 0.0018
TTSB79 40.1 3100 1100 I 0.021 I 50.0 0.4 0.1 4.5 I 0.6 0.0018
TTSB80 42.1 2400 1000 I 0.007 45.1 0.4 0.1 4.5 I 0.6 0.0018
TTSB81 110.0 I 3600 I 1400 0.018 46.8 0.4 0.1 4.5 I 0.6 0.0018
TTSB82 88.7 I 3800 1400 0.012 44.1 0.4 0.1 4.5 0.6 0.0018
TTSB83 48.4 2900 900 I 0.013 50.0 0.4 0.1 4.5 0.6 0.0018
TTSB84 69.1 3500 1600 0.018 50.0 0.4 I 0.1 4.5 0.6 0.0018
TTSB85 16.1 1000 I 400 0.006 50.0 0.4 I 0.1 4.7 0.6 0.0018
TTSB86 57.4 4300 I 1700 I 0.018 38.3 0.4 0.1 4.5 0.6 0.0018
TTSB87 74.1 3900 I 1600 I 0.005 51.8 0.4 0.1 4.0 0.6 0.0018
rtSB88 I 24.9 I 3100 I 1300 0.016 I 53.3 0.4 0.1 4.2 0.6 0.0018
TTSB89 I 211.4 5300 1800 0.012 51.1 0.4 I 0.1 3.7 0.5 0.0018
TTSB90 I 441.2 5500 I 2300 0.016 36.4 0.4 0.1 4.4 0.6 0.0018
TTSB91 I 225.6 5700 I 2700 0.012 62.2 0.4 I 0.1 3.3 I 0.5 0.0018
TTSB92 I 117,0 I 4300 I 1500 0.011 32.0 0.4 0.1 3.8 0,6 0.0018
TTSB93 I 45.8 I 3800 I 2400 I 0.011 I 50.7 0.4 0.1 3.0 0.5 0.0018
TTSB94 I 38.7 I 3400 I 1200 I 0.011 -I' 56.3 0.4 0.1 3.1 0.5 0.0018
TTSB95 I 374,3 I 5200 I 2400 0.010 44.6 0.4 0,1 3.3 0.5 0.0018
TTSB96 1 269.3 1 4800 I 1800 I 0.013 I 59.6 0.4 I 0,1 4.5 0.6 0.0018

T:\OPENlCoweldOl\coweldOl tb/4-5.wpd

4.21

Sepwnber 8, 1999