Reservoir Volume Calculator

Multiply an entered surface area by average depth for a simplified volume estimate.

Important: This calculator provides an educational estimate only. It is not plumbing, pump, pressure-vessel, dam, turbine, electrical, flood-safety, installation, engineering, legal, or regulatory-compliance advice.

About the Reservoir Volume Calculator

Create a first-order volume estimate from plan area and average depth.

How to use it

Enter surface area and unit.
Enter average depth and unit.
Calculate volume in cubic meters, liters and acre-feet.

Formula

Volume equals surface area in square meters times average depth in meters.

Example

Two hectares at an average depth of 5 m estimates 100,000 m³.

Notes

Irregular basin geometry, bathymetry, sediment, changing levels and flood storage are not modeled.