FLOOD09085

• Designation Number: 97
• County: Adams
• Community: Thornton
• Stream Name: Grange Hall Creek
• Basin: South Platte
• Title: Major Drainageway Planning - Grange Hall Creek, Phase B, Thornton, Adams County
• Date: 12/1/1977
• Designation Date: 1/19/1978
• Floodplain - Doc Type: Floodplain Report/Masterplan

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GRANGE HALL CREEK MAJOR DRAINAGEWAY PLANNING STUDY
BASIN CHARACTERISTICS SUMMARY

TABLE m-I

SUB AREA BASIN CENTROID BASIN DRAINAGE EXISTING DEVELOPEMENT FUTURE DEVELOPEMENT
BASIN LENGTH LENGTH SLOPE DENSITY REMARKS
BASIN AC MI2 ML MI. FT/FT FT/AC % IMP Cp Ct % IMP Cp Ct
G-01 134 .209 0.72 0.50 .0221 0 7 1. 03 1.88 70 0.50 0.28
G-02 129 .202 0.44 0.25 .0370 29 42 0.59 0.43 42 0.59 0.43
1;-03 188 .294 0.38 0.19 .0385 14 48 0.52 0.41 48 0.52 0.41
! G-04 162 .253 0.87 0.37 .0187 32 53 0.55 0.35 58 0.53 0.33
G.-05 78 .122 0.66 0.33 .0344 22 43 O.Sf) o 44 43 0.56 0.44
1;-06 81 .127 0.45 0.15 .0253 47 94 0.48 0.22 94 0.48 0.22
G-07 46 .072 0.83 0.28 .0262 2 76 0.43 0.30 76 0.43 0.30
:.:: G-08 157 .245 0.93 0.33 .0167 22 38 0.59 0.48 38 0.59 0.48
w G-nQ
w 122 .191 0.66 0.32 .0189 11 43 0.53 0.46 43 0.53 0.46
a: G-10 241 .377 1. 02 0.44 .0210 22 37 0.60 0.49 44 ~56 0.43
u
G-11 100 .156 0.42 0.21 .0338 2 15 0.78 1.03 65 0.51 0.30
..J (;-12 40 .062 0.62 0.29 .0217 0 7 '1.03 1.88 10 1.00 1. 30
..J
<t (;-13 105 .164 0.80 0.30 .0239 0 7 1.03 1.88 10 1. 00 1. 30
::r: (;-14 .173 0.64 7 1.03 1.88 17 0.83 0.86
w 111 0.23 .0272 0
(9 (;-15 141 .220 0.70 0.36 .0230 0 9 0.94 1. 55. 9 0.94 1. 55
z
<t G-16 216 .338 0.80 0.49 .0201 0 19 0.72 0.87 51 0.56 0.36
a:
(9 G-17 215 .336 1.04 0.55 .0240 0 7 1. 03 1. 88 36 0.63 0.48
G_1R 1<7 .214 0.80 O.~S . Waf) 0 21'; n 1';4 n I';R 1';4 n ~? n '1n
G-19 55 .086 0.38 0.17 .0359 1 12 0.85 1.23 33 0.65 0.51
! G-20 100 .156 0.47 0.18 .0206 0 12 D.85 1. 23 52 0.56 0.36
,
I (;-21 391 .611 1.48 0.66 .0074 0 8 0.98 1.69 9 0.94 1. 55
,
(;-22 132 .206 0.51 0.23 .0134 0 37 0.57 0.52 77 0.48 0.26
, G-23 103 .161 1.34 0.60 .0086 0 7 1.03 1.88 11 0.87 1. 32
I 5-01 110 .172 0.72 0.24 .0145 0 43 0.45 0.46 76 0.48 0.30
5-02 159 . .248 0.74 0.37 .0269 18 49 0.54 0.40 49 0.54 0.40
5-n'1 37 .058 0.52 0.26 .0211 30 ,,~ 0.58 0.4n 4~ n.~8 0.40
>- 5-04 72 .112 0.56 0.19 .0271 6 42 0.54 0.46 42 0.54 0.46
a: 5-05 67 .105 0.31 0.09 .0232 5 64 0.47 0:33 64 0.47 0.33
<( 5-06 241 . .377 0.59 0.25 .0161 0 16 0.76 0.99 46 0.58 0.39
I- en
:::l 5-07 263 .411 0.93 0.47 .0143 0 14 0.80 1.10 52 0.56 0.3'6
OJ
a: 5-08 127 .198 1. 34 0.53 .0212 0 46 0.52 0.43. 65 0.51 0.30
I- 5-09 40 .062 . 0..42 0.21 .0370 0 30 0.61 0.61 44 0.52 0.32
5-10 38 .059 0.33 0.16 .0344 0 31 0.60 0.59 59 0.53 0.32
TRIB. 5E-01 55 .086 0.55 0.31 .0241 2 15 0.78 1. 03 27 0.70 0.60
! S. E. 5E-02 86 .134 0.83 0.48 .0278 0 11 0.87 1. 32 51 0.56 0.36
, N-01 140 .219 0.53 0:30 .0293 0 36 0.57 0.53 57 0.54 0.33
>- N-02 67 .105 0.55 0.27 .0258 4 42 0.54 0.46 42 0.54 0.46
a:
~ N-03 172 .269 1. 02 0.53 .0156 26 31 0.65 0.56 31 0.65 0.56
z
:::l N-04 203 .317 0.76 0.32 .0222 32 47 0.58 0.39 47 0.58 0.39
OJ
a: .N-05 83 .130 0.57 0.23 .0239 20 11 0.91 1. 27 88 0.46 0.24
I- ..N-06 46 .072 0.55 0.28 .0324 0 7 1.03 1.88 10 0.90 1.43
TRIB. NE-01 395 .617 1. 59 0.90 .0126 23 42 0.58 0.44 42 0.58 0.44
N.E. NE-02 310 .484 0.83 0.33 .0240 0 25 0.65 0.70 40 0.61 0.44
, NE-03 81 .127 1.02 0.43 .0234 0 7 1.03 1.88 12 0.94 1.12

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