Laserfiche WebLink
Project: NUCLA MINE <br />By: GL Date: 02/17/06 <br />Location: DITCH D108 <br />Checked: Date: <br />Developed <br />1. Data: <br />Drainage area: .................... <br />A = 41.7000 Acres <br />Runoff Curve Number: ............. <br />CN = 78 <br />Time of Concentration: ........... <br />Tc = 0.50 <br />Storm Type: ....................... <br />=11 <br />Pond and swamp areas spread <br />throughout watershed ............... <br />= 3.00 percent of A <br />1.2510 Acres <br />2. Frequency ........................yr <br />= 10 <br />3. Rainfall ,P(24 - hour) .............. <br />in = 2.00 <br />4. Initial abstraction, la............ <br />= 0.5641 <br />5. Compute la /P ....................... <br />= 0.2821 <br />6. Unit peak discharge, qu <br />...... csm/in = 452.95 <br />7. Runoff, Q .........................in <br />= 0.4844 <br />8. Pond & swap adjustment factor .... Fp = 0.75 <br />9. Peak Discharge,gp ...............cfs <br />= 10.7219 <br />DITCH D108 <br />Channel Type: Trapezoidal, Equal Side Slopes <br />Dimensions: Left Side Slope 2.00:1 <br />Right Side Slope 2.00:1 <br />Base Dimension: 2.00 <br />Wetted Perimeter: 5.03 <br />Area of Wetted Cross Section: 2.27 <br />Discharge: 10.70 cfs <br />Revised August 2009(PB06) Attachment 2.05.3(3) -1 -50 <br />