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 13-6-4
SECTIONS "A" & "B" 8 "C

O
PROGRAM INPUT DATA:
DESCRIPTION VALU
Channel Bottom Slope (feet per foot) .................... 0.055
Manning` s Roughness Coeff icient (n-value) ............. .. 0.035
Channel Side Slope - Left Side (horizonta l/vertical).. .. 3:00
Channel Side Slope - Righ t Side (horizont al/vertical). .. 2.00
Channel Bottom Widt h (fee t) .............. ............. .. 0.0
--------
PROGRAM -----------
RESULTS: ------ ------ ---------- ------------- ----- --------
Depth Fl ow Rate Vel ocity Froude Velocity Energy Flow Area Top Widt.
(ft)
------- (cfs)
--
--
-- (fps)
--
--- Number
---
-- Head(ft)
-
------
- Head(ft) -(sq
-----
--- -ft)- -----(ft
-
0.2 --
-
--
0.2 -
2.04 -
1.136 -
-
0.065 -
0.265 0.1 1.
0.4 1.3 3.24 1.275 0.163 0.563 0.4 2.
0.6 3.8 4.24 1.364 0.279 0.879 0.9 3.~
0.8 8.2 5.14 1.431 0.410 1.210 1.6 4.
1.0 14.9 5.96 1.485 0.552 1.552 2.5 5.
1.2 24.2 6.73 1.531 0.704 1.904 3.6 6.
1.4 36.6 7.46 1.571 0.864 2.264 4.9 7.
1.6 52.2 8.15 1.606 1.032 2.632 6.4 8.
1.8 71.5 8.82 1.638 1.208 3.008 8.1 9.
2.0 94.6 9.46 7.667 1.390 3.390 10.0 10.
2.2 122.0 10.08 1.694 1.578 3.778 12.1 11.E
2.4 153.9 10.68 1.719 1,773 4.173 14.4 12.'
2.6 190.5 11.27 1.742 1,972 4.572 16.9 13.E
2.8 232.1 11.84 1.763 2,177 4.977 19.6 14.
3.0 279.0 12.40 1.784 2.387 5.387 22.5 15.
3.2 331.4 12.94 1.803 2.601 5.801 25.6 16.
3.4 389.5 13.48 1.821 2.820 6,220 28.9 17.
-------------------------------------------------------------------
TRAPEZOIDAL CHANNEL ANALYSIS COMPUTER PROGRAM, Version 1.3 (c) 198
Dodson & Associates, Inc., 7015 W. Tidwell, #107, Houston, TX 7709
[phone]. A manual with equations & flow chart is available.
13-6-5