FLOOD09354

• County: Douglas
• Community: Douglas County
• Basin: South Platte
• Title: South Platte River Post Wildfire Floodplain Study, Hayman Burn Area, Douglas County
• Date: 11/24/2004
• Prepared For: CWCB and Douglas County Public Works
• Prepared By: Anderson Consulting Engineers
• Floodplain - Doc Type: Floodplain Report/Masterplan

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Table ..1.2 Summa!)" of .'Ianning's Roughness Coefficients for the South Platte RiHr.

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Cross Section ID Manning's Roughness Codficienls
Left Right Location
Letter In HEC-RAS ID Channel OnrbankA O\"erbankA
A -]681 0,045 0.100 0.080 O,'S Limit of Lower Detailed Study Reach
B -816 0.045 0.100 0.080
C -30 0.045 0.100 0.080
D 30 0.045 0.100 0.080 Jeffco Bridge F-IQ-8A
E 566 0.0-15 0.100 0.080 Community of South Plane
F 1399 0.045 0.100 0.080
G 2349 0.045 0.100 0.080
H 3157 0.045 0.100 0.080 VIS Limit of Lower Detailed Study Reach
I 22477 0.040 0.080 0.020 to 0.070 D,'5 limit of Upper Detailed Study Reach
Nighthawk
J 23138 0.040 0.080 0.020 to 0.070
K 24424 0.040 0,080 0.020 to 0.070 Confluence with Pine Creek
L 25477 0.040 0.080 0.020 to 0.070
M 26566 0.040 0.075 0.020 to 0.075
N 27507 0.040 0.075 O.O:W to 0.075
0 28564 0.040 0.075 0.020 to 0.075
P 29675 0.050 0.080 0.020 to 0.075
0 30642 0.050 0,080 0.020 to 0.075
R 31750 0.050 0.075 0.020 to 0.075
S 32820 0.050 0.075 0.020 to 0.070
T 33855 0.045 0.080 0.020 to 0.075
U 34806 0.045 0.080 0.020 to 0.075
V 35680 0.045 0.080 0.020 to 0.075
W 36790 0.045 0.080 0.020 to 0.075
X 37787 0.040 0.080 0.020 to 0.075
y 38610 0.045 0,100 0.020 to 0.070
Z 39878 0.045 0.100 0.020 to 0.070
AA 40825 0.045 0,100 0.020 to 0.070 Scraggy View Picnic Area
AB 41602 0.045 0.100 0.020 to 0.070
AC 42621 0.040 0.035 to 0.080 0.020 to 0.100
AD 43994 0.040 0.080 0.020100.100
AE 44923 0.040 0.080 0.020 to 0.100
AF 46060 0.040 0.080 0.020100.100
AG 47165 0.040 0,080 0.020100.100
AH 48315 0.040 0.080 to 0.\00 0.020100.075
Al 49220 0.040 0.080 to 0.100 0.020100.075
AJ 49912 0.040 0.080 0.020 to 0.075
AK 49995 0.040 0.020 to 0.080 0.075 Jeffco Bridge F.7-6
AL 51092 0.040 0.100 0,100
A\1 51519 0.045 0.080 0,080 Confluence with Sugar Creek
AN 52407 0.045 0.020 to 0.080 0.080
AO 53686 0.045 0.020 to 0.080 0.080
AP 54901 0.045 0.020 to 0.080 0.080 to 0.100

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I All directions assume orientation is looking do\\nstream.

CDCWCB03 _Table ..\-2 FISAL RPTdoc 10

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