Interactive illustration · Below ground
What does lowering a high water table involve?
Change the depth of the water table and compare no drainage, gravity drainage and a wellpoint system in one cross-section.
An illustrative scenario, not a drawdown calculation or the capacity of any installed system.
EXPLORE HOW IT WORKS
Wellpoint dewatering: moving the water table
See the difference between collecting water in a drain and lowering groundwater around a work area.
- 1Groundwater surface
- 2Work zone
- 3Ground surface
The water table crosses the work zone. Part of the excavation is wet.
What to notice.
Wellpoints connect screened pipes to a header and vacuum pump. They can lower groundwater around a work area. A gravity drain depends on its depth and a suitable outlet. The ground, water supply and discharge arrangements determine what is possible at a real property.
Educational illustration. Geometry and motion are simplified, and slopes are exaggerated so the change is visible. It does not predict performance at your property or specify equipment, dimensions or repairs.