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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-2 BASIN 26 <br />• Time of Concentration (SCS Method) <br />Curve Number: 80 <br />Length of Flow (ft): 811.74 <br />Average Land Slope (): 11.6 <br />Time of Concentration (hrs): 0.13 <br />08/07/1999 <br />Graphical Peak Discharge <br />Project: AMENDMENT <br />Location: DITCH C-2 <br />08/07/1999 <br />By: GL Date: 08/07/99 <br />Checked: Date: <br />Developed <br />1. Data: <br />Drainage area :....................A = 2.1000 Acres <br />Runoff Curve Number :.............CN = 80 <br />Time of Concentration:...........Tc = 0.13 <br />Pond and swamp areas spread throughout watershed. = 5.00 percent of A <br />0.1050 Acres <br />• 2. Frequency .............. <br />yr = 10 <br />3. Rainfall,P(24-hour) <br />in = 2.00 <br />4. Initial abstraction, la............ = 0.5000 <br />5. Compute la/P ....................... = 0.2500 <br />6. Unit peak discharge, qu......csm/in = 872.60 <br />7. Runoff,Q .........................in = 0.5625 <br />8. Pond 8 swap adjustment factor,...Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs = 1.2079 <br />• <br />(Revised 12/00) Attachment 2.05.3(3) -10-71 <br />
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