surface runoff calculator - Axtarish в Google
This calculator allows you to simulate the effects that installing a rain garden, a type of green infrastructure, could have on stormwater runoff from your ...
29 мар. 2024 г. · Enter the total runoff area (ft^2) and the total inches of rainfall (in) into the Runoff Volume Calculator. The calculator will evaluate and display the Runoff ...
EPA's National Stormwater Calculator (SWC) is a web-based application tool that estimates the annual amount of rainwater and frequency of runoff from a specific ...
Use this calculator to determine how much runoff your home produces based on its square footage. If you know it, add the area of your driveway as well.
For every 100 square feet of roof surface, one inch produces 62 gallons of water · Area of your roof x .62 = volume of water ...
The CivilAxtarish Rainfall & Runoff Calculator spreadsheet allows the user to estimate runoff using the following methodologies.
Rainwater Runoff Formulas. Q = (C x I x A )/96.23. Where,. Q is the storm-water Run-off in Gallons Per Minute (GPM). C is the Run-off coefficient.
The most common method is the Wallingford Procedure which is detailed below: QP = 2.76 x Ap xi Where: QP = Peak discharge (litres/sec) Ap = Impermeable Area ( ...
Peak discharge, runoff depth, initial abstraction, unit peak discharge, and pond/swamp factor are computed as follows:
24 мар. 2022 г. · For a given surface area such as a roof or yard, multiply the area by the inches of rainfall and divide by 231 to obtain the runoff in gallons.
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