THE FEUTEX TOOLKIT

Rain Tank Overflow Scenario

Estimate stored rainfall, overflow and unmet withdrawal for a single tank cycle.

Gardening workspace● Runs in your browser

01 Your input

CapacityLInitialLInflowLWithdrawalL

02 Your result

View or copy raw result data

Result data

Formula

Overflow = Math.max(0,initial+inflow-capacity); Final = Math.max(0,Math.min(capacity,initial+inflow)-withdrawal); Unmet = Math.max(0,withdrawal-Math.min(capacity,initial+inflow))

Worked example

Inputs

Capacity: 1000 L
Initial: 300 L
Inflow: 900 L
Withdrawal: 500 L

Expected results

Overflow: 200 L
Final: 500 L
Unmet: 0 L

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter the measured quantities and your own planning assumptions.
Review all calculated outputs and the stated limitations.

Try this example

{
  "capacity": 1000,
  "initial": 300,
  "inflow": 900,
  "withdrawal": 500
}

Accuracy and scope

Assumes all inflow happens before withdrawal. No water-quality or potable-use assessment.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.