Free connected garden-water tool

Turn measured flow and runtime into a transparent water record.

Calculate delivered volume, geometric equivalent depth over an area, recorded-rainfall volume, and an independent volume difference—without turning those numbers into a watering recommendation.

Calculate water application Measure flow first See formulas and limits

Start hereChoose units

U.S.U.S. gallons, square feet, and inches Metriclitres, square metres, and millimetres

Step 1 · required

Flow and runtime

Use a flow you measured at the tested setup, or enter a value from another clearly identified source.

Flow rateU.S. gal/min Runtimeminutes Flow evidence basis Setup label

Step 2 · optional

Area and equivalent depth

Enter the area receiving the calculated volume, or import area from compatible Garden Bed Builder dimensions saved on this device.

Application areaft²

Only length, width, and units are imported. Crop and location fields are not copied.

Step 3 · optional

Recorded rainfall

Add a rainfall depth only when it applies to the same entered area and time record.

Rainfall depthinThis is a user-entered or externally observed value; TerraEvidence does not fetch or infer rainfall here.

Step 4 · optional

Independent volume check

If another method measured total volume, compare it with flow × runtime. A difference is not a diagnosis.

Independently observed volumeU.S. gal

Optional · private on this device

Save or export your water records

Nothing is saved until you choose Save private record. Saved records stay in this browser and are not placed in a URL or sent with analytics. Browser storage can be cleared, so a downloaded JSON backup is the user-controlled durable copy.

No account required

Restore JSON backup

No garden-water records saved in this browser.

Transparent method

What each result means

Calculated volume = flow × runtime. Equivalent depth = volume ÷ area. Rainfall volume = rainfall depth × area. Combined geometric depth = equivalent application depth + entered rainfall depth.

Worked example

A measured flow of 2.3 U.S. gal/min for 30 minutes calculates to 69 U.S. gallons. Spread geometrically over 171.82 ft², that is approximately 0.644 inches of equivalent depth.

The calculation does not establish that 69 gallons or 0.644 inches is needed, sufficient, uniform, or retained.