1989-10-10_REVISION - M1988112 ‎(7)‎

• Permit No: M1988112
• IBM Index Class Name: Revision
• Doc Date: 10/10/1989
• Doc Name: APPENDIX H DIVERSION DITCH DESIGN CALCULATIONS
• Type & Sequence: AM1
• Media Type: D
• Archive: No

********** STORM HYDROGRAPH GENERATED FROM START OF RAINFALL ***********
TIME * 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
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.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
1.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
•
2.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
3.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
4.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
5.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
6.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
7.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
8.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
9.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
10.0 * .0 .0 .0 .0 .0 .0 .0 .0 .0 .0
11.0 * .0 .0 .0 .0 .0 .0 .0 .1 .7 1.8
12.0 * 4.1 6.3 4.7 2.3 1.3 1.0 1 .0 .9 .9 .9
13.0 * .9 .9 .9 .9 .9 .9 .8 .8 .8 .8
14.0 * .8 .7 .6 .4 .4 .4 .4 .4 .4 .4
15.0 * .4 .4 .4 .4 .3 .3 .3 .3 .3 .3
16.0 * .3 .3 .3 .3 .3 .3 .3 .3 .3 .3
17.0 * .3 .3 .3 .3 .3 .3 .3 .3 .3 .3
18.0 * .3 .3 .3 .3 .3 .3 .3 .3 .3 .3
19.0 * .3 .3 .2 .2 .2 .2 .2 .2 .2 .2
20.0 * .2 .2 .2 .2 .2 .2 .2 .2 .2 .2
21.0 * .2 .2 .2 .2 .2 .2 .2 .2 .2 .2
22.0 * .2 .2 .2 .1 .1 .1 .1 .1 .1 .1
23.0 * .1 .1 .1 .1 .1 .1 .1 .1 .1 .1
24.0 * .1 .1 .0
• ,INIT IAL ABSTRACT ION = 21.77 mm.
ROUT ED FLOW TIME FROM THE SUBWATERSHED = .30 hours.
TIME TO PEAK OF UNIT HYDROGRAPH = .16 hours.
THE DEPTH OF WATER ON WATERSHED = 16.59 mm.
VOLUME OF RUNOFF = 21.90 thousand cu .m.
PEAK RUNOFF RATE = 6.35 cu. m./sec.
TIME TO PEAK RUNOFF = 12.10 hours.

THERE IS NO SEDIMENT CONTAINED IN THE STORM RUNOFF FROM 'THIS WATERSHED
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r1
LJ