Pump a well and the water table dips into a cone of depression around it. See how pumping rate and aquifer properties set how deep and how wide that cone spreads.
Groundwater Well DrawdownLive
Thiem steady-state cone of depression
Controls
Presets
Pumping a well lowers the water table into a cone of depression. Under the Thiem steady-state solution the drawdown is s(r) = Q/(2πT)·ln(R/r): more pumping deepens the cone, higher transmissivity flattens it. Fundamental to well design, water supply, and contaminant capture.
Reading this result: Drawdown is Q/(2πT)·ln(R/r): here it is about 4.7 m at the well and falls off logarithmically, so most of the depression sits in the first tens of metres.
Runs locally in your browser — free forever. Scale to the cloud when reality gets heavy.
★ Sign in to save this setupSave your tuned setup, or drop this simulation into your own site, docs, or course page.
How it works
The Thiem steady-state solution gives drawdown s(r) = Q/(2πT)·ln(R/r), where Q is the pumping rate, T the aquifer transmissivity, and R the radius of influence. Higher pumping deepens the cone; higher transmissivity spreads it out and flattens it. This underlies well design, sustainable yield, and capture-zone analysis for contamination.
✦
Ask the AI about this model
The math, the assumptions, real-world uses, or a code translation — explained for this exact simulation.
Is this groundwater drawdown calculator tool really free?▾
Yes. Groundwater Well Drawdown runs entirely in your browser using your device's own compute, so local use is free forever. You only pay Compute Tokens if you scale a job to the cloud.
Do I need to install anything?▾
No. Everything runs client-side in a modern browser — no downloads, no license, no account required to start.
Can I save or share my simulation?▾
Create a free account to save projects, and use a shareable embed or minted DOI to publish a live, interactive version anywhere.
How accurate are the results?▾
The solver uses established numerical methods, but results are for research and educational purposes and should be validated against experiment or professional review before you rely on them.