Water Well Capacity

A true well flow rate is not what we can measure in the building over five minutes it s the ability of a well to deliver a sustained water flow rate over a longer period usually measured over 24 hours.

Water well capacity.

The water ace charts excerpted in part above make clear that the capacity of a deep well pump to deliver water at a given flow rate varies by the factors we listed previously for both shallow well one line jet pumps and deep well 2 line jet pumps. Transmissivity derived from specific capacity is useful because much specific capacity data is available from water well driller s completion reports. This is a measure of the effectiveness of a well. There is the alternative basic calculations that can also estimate how much water is available to them especially when the property is first purchased or if something major has affected the well.

4 78 5 89 and 5 90. Water well specific capacity may be used to estimate aquifer transmissivity. The average american uses over 100 gallons of water per day 3. I have used such data for projects in montana and colorado where driller s reports may be obtained from state agencies.

Which shows that the specific capacity of a well is not constant but decreases with the increase in pumping rate q and prolonged pumping t fig. But this table above is for submersible well pumps. The pump is in the well usually near the. The specific capacity q s w of a well is the discharge per unit drawdown in the well and is usually expressed in lpm m.

There are digital tools to help water well owners understand how much water is available in a well. Watch out for errors or deliberate misrepresentation about well flow rate and water quantity well capacity when buying a property.