Cfs to acre feet calculator
[DOC File]Chapter Table Of Contents
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The rational method takes advantage of the fact that the conversion from acre-inches per hour (on the right side of the equation) to cubic feet per second is about 1.00. The rational method equation is: Q = C i A (A.3.1) Where: Q = peak flow (cfs) C = dimensionless runoff coefficient.
[DOC File]Activity 2.3.11 Calculating Property Drainage Answer Key
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Calculator. Journal. Procedure. For small drainage areas, the peak runoff can be easily computed using the rational formula. The formula is: Q=CfCiA. Q = Peak runoff rate in cubic feet per second. i = Rainfall intensity in inches per hour (see map) A = Drainage area in acres. C = Runoff coefficient (see table) Cf =Runoff coefficient adjustment ...
[DOC File]EFH2 User's Manual - USDA
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I = contour interval, feet. A = drainage area, ft2 (1 acre = 43,560 ft2). If using EFH2 to compute Tc, a Watershed Slope must be entered. However, Watershed Slope may be carried over from the Average Slope Calculator dialogue window (Figure 15). This window …
[DOC File]SDCCD SWPPP Template_December 2013
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Q = CiA Where Q = runoff flow rate in cubic feet per second (cfs) C = runoff coefficient (unitless) i = design intensity (inches per hour) based on a 10-yr, 6-hr rainfall event. A = site area, in acres. Worksheet 2.1 can be used to calculate run-on from a drainage area using the Rational Method.
[DOC File]Activity 2.3.11 Calculating Property Drainage
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Suppose a developer purchased a three acre farm in Nashville, TN (in the middle of the state). As part of the project, a 30,000 sq ft asphalt parking lot area will be placed on one side of the three acre farm. The 10-year 1-hour rainfall chart (see map) indicates that the rainfall amount is 2.17 inches/hour.
[DOC File]Estimating pollutant loadings – SIMPLE
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L = hydraulic length of watershed in feet. CN = curve number. S = watershed land slope in percent. This equation has been entered into the Excel file under the tab, Time of Concentration. You will also find the length (longest flow path) and slope for each watershed area. Enter the Curve Number (CN) and the Time of Concentration will be calculated.
[DOC File]Request for Determination of Water Budget Neutrality
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Cubic Feet per Second (CFS) Gallons per Minute (GPM) Total Water Use* in Acre-Feet per Year (AF/YR) (If known) Period of Use (Continuously or . Seasonal) TOTAL: *Total water use is the total quantity of water required for each use. (1 acre-foot = 325,851 gallons).
[DOC File]Drain Size Capacity
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40-acre field and main 0.1% 0.67 12” 10” 20-acre 0.32 40-acre field, main and 20-acre field 0.1% 0.99 15” 12” A plastic tile with a diameter of 12 inches is silted to a depth of 6 inches, assuming that the grade in the tile is 0.2 feet per 100 feet: a. What was the original capacity in CFS? 1.22 cfs. b.
[DOC File]Final Report on TWDB Project:
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Average Cost ($/Acre feet) 20 55 54 Marginal Cost ($/Acre feet) 32 75 62 Cost of Comal Springflow: Average Cost ($/Acre feet) 49 173 164 Marginal Cost ($/Acre feet) 78 231 180 Table 7. Potential Water Use Reduction from Implementing a Dry Year Option (Acre Feet). County Strategy JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV
[DOC File]MSU SWPPI 2010
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If 1-year extended detention is used, a 25-year maximum allowable release rate of 0.10 cfs/acre is required. The required storage volume is determined by reservoir routing with …
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