PERMFILE113314

• Permit No: C1981008A
• IBM Index Class Name: Permit File
• Doc Date: 7/30/2007
• Doc Name: Collection/Diversion Ditches and Culverts Design Parameters
• Section_Exhibit Name: Section 2.05.3‎(3)‎ Attachment 2.05.3‎(3)‎-1
• Media Type: D
• Archive: Yes

• Time of Concentration (SCS Method)
Curve Number: 78
Length of Flow (ft}: 2099.71
Average Land Slope {percent): 7.5
Time of Concentration (hrs): 0.37
DITCH D109
Graphical Peak Discharge
Project: NUCLA MINE By: GL
Location: DITCH D109 Checked
Developed
• 1. Data:
Drainage area :....................A = 52.0000 Acres
Runoff Curve Number :.............CN = 78
Time of Concentration:...........Tc = 0.37
Storm Type :....................... = II
Date: 02/17/0&
Date:
Pond and swamp areas spread
throughout watershed ............... = 1.00 percent of A
0.5200 Acres
2. Frequency ........................yr = 10
REVISED MARCH 2006
Attachment 2.05.3(3)-1-56