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PERMFILE120020
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Entry Properties
Last modified
8/24/2016 10:18:55 PM
Creation date
11/25/2007 8:10:12 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981008A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
Collection Ditches, Culverts & Diversion Design Parameters
Section_Exhibit Name
NH2 1996 Section 2.05.3(3) Attachment 2.05.3(3)-10 Part 7
Media Type
D
Archive
Yes
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• DITCH C-9 BASIN 14 <br />Time of Concentration (SCS Method) 08/07/1999 <br />Curve Number: 83 <br />Length of Flow (ft): 2635.18 <br />Average Land Slope (): 12.4 <br />Time of Concentration (hrs): 0.30 <br />08/07/1999 <br />Graphical Peak Discharge <br />Project: AMENDMENT By: GL Date: 08/07/99 <br />Location: DITCH C-9 Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 22.7000 Acres <br />Runoff Curve Number :.............CN = 83 <br />Time of Concentration:...........Tc = 0.30 <br /> Pond and swamp areas spread throughout watershed= 5.00 percent of A <br /> 1 .1350 Acres <br />2. Frequency ...................... ..yr = 10 <br />3 . Rainfall,P(24-hour) ......... .....in = 2.00 <br />4. Initial abstraction, la....... ..... = 0.4096 <br />5. Compute la/P ................. ...... = 0.2048 <br />6. Unit peak discharge, qu. .....csm/in = 630.60 <br />7. Runoff,Q ......................... in = 0.6951 <br />8. Pond 8 swap adjustmen t factor,...Fp = 0.72 <br />9. Peak Discharge,gp ......... ......cfs = 11.1942 <br />• <br />(Revisetl 12/00) Attachment 2.05.3(3) -10-78 <br />
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