Water Storage Calculator
Enter the stored volume and the daily demand in matching units.
A QUICK WALKTHROUGH
How to use this tool
- Enter a non-negative stored volume.
- Enter a positive daily demand in the same volume units.
- Review estimated days of supply.
Formula and scope
Days of supply = stored volume ÷ daily demand. Both inputs must use the same volume unit.
Limitations
Assumes constant daily demand and no further inflow. It does not calculate evaporation, leakage, rainfall, or unusable reserve.
Local calculation
Values are processed in this browser. This is a planning estimate, not agronomic or regulatory advice.
GOOD TO KNOW
Common questions
Does this include rainfall or leakage?
No. It uses only the storage and demand you enter.
Where does storage volume come from?
Use a measured or separately calculated usable storage volume.