PERMFILE51266

• Permit No: C1982057
• IBM Index Class Name: Permit File
• Doc Date: 5/5/2005
• Doc Name: Ditch Calculations
• Section_Exhibit Name: Tab 13 Attachment 13-6
• Media Type: D
• Archive: No

TRAPEZOIDAL CHANNEL ANALYSIS
RATING CURVE COMPUTATION
November 4, 1990
TABLE 13-6-3
SECTION "C"
PROGRAM INPUT DATA:
DESCRIPTION VALUE
Channel Bottom Slope (feet per foot) .................... 0.017(
Manning' s Roughness Coefficient (n-value) ............... 0.0350
Channel Side Slope - Left Side (horizontal/vertical).... 3.00
Channel Side Slope - Right Side (horizontal/vertical)... 2.00
Channel Bottom Width (feet) .... ......................... 0.0
PROGRAM RESULTS:
Depth Flow Rate Velocity Froude Velocity Energy Flow Area Top W tY
(ft)
------ (cfs)
---------- (fps)
--------- Number
------- Head(ft)
--------- Head(ft)
-------- (sq ft)
-------------
- --
0.2 0.1 1.13 0.632 0.020 0.220 0.1 1.(
0.4 0.7 1.80 0.709 0.050 0.450 0.4 2.i
0.6 2,1 2.36 0.758 0.086 0.686 0.9 3.C
0.8 4.6 2.86 0.796 0.127 0.927 1.6 4.C
1.0 8.3 3.31 0.826 0.171 1.171 2.5 5.C
1.2 13.5 3.74 0.851 0.217 1.417 3.6 6.i
1.4 20.3 4.15 0.873 0.267 1.667 4.9 7.C
1.6 29.0 4,53 0.893 0.319 1.919 6.4 ~ 8.c
1.8 39.7 4,90 0.911 0.373 2.173 8.1 9.(
2.0 52.6 5.26 0.927 0.430 2.430 10.0 10.0
2.2 67.8 5.61 0.942 0.488 2.688 12.1 11.0
2.4 85.6 5.94 0.956 0.548 2.948 14.4 12.0
2.6 105.9 6.27 0.968 0.610 3.210 16.9 13.0
2.8 129.0 6.58 0.980 0.673 3.473 19.6 14.0
3.0 155.1 6.89 0.992 0.738 3.738 _ 22.5 15.c
3.2 184.2 7.20 1.002 0.804 4,004 25.6 16.i
3.4 216.6 7.49 1.013 0.872 4,272 28.9 17.(
3.6 252.2 7.78 1.022 0.941 4,541 32.4 18.E
3.8 291.3 8.07 1.032 1.011 4.811 36.1 19.E
4.0 334.0 8.35 1.040 1.083 5.083 40.0 20.1
TRAPEZOIDAL CHANNEL ANALYSIS COMPUTER PROGRAM, Version 1.3 (c) 1981
Dodson 8 Associates, Inc., 7015 W. Tidwell, #107, Houston, TX
[phone]. A manual with equations & flow chart is availab~
13-6-4