This is done to ensure that you acquire an accurate, representative sample of the groundwater and avoid any pollution that may have occurred as a result of the well being “stagnant” for an extended length of time. Pumping out at least three times the volume of water in a well (known as the "water column") is a normal procedure when sampling a well. The advanced mode in this calculator will help you compute the total well volume or, in other words, the total water your cylindrical well could contain.
WELL DRAWDOWN CALCULATOR HOW TO
You don't have to worry about how to calculate the volume of water in a well anymore. Plug in the three measured quantities in our well volume calculator and voila!!! Drawdown at Pumping Well calculator uses Drawdown at the Pumping Well (Saturated Thickness of the Aquifer-Depth of Water in the Pumping Well) to calculate the. You can also use our length converter to help you have the same units for all three measurements.
Make sure you measure all the quantities in the same units. Then remove the thread and weight from the well and measure its length. This value will be referred to as Static water depth. Similarly, you can determine the well's total depth above water by putting a tiny weight to one end of a length of string and lowering it into the well until you feel it hit the water. Then take the string and weight out of the well and measure how long it is. You can measure this by putting a tiny weight to one end of a length of string and lowering it into the well until you feel it hit the bottom of the well. This value will be referred to as Total well depth. Next, you’ll need to know the overall depth of your well.This value will be referred to as Well diameter. This might be as simple as getting out a tape measure, but try to be as precise as possible.
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