Dry Well

Definition

A well, usually filled with gravel, designed to receive rain run-off water in areas where the ground is not very permeable, such as clay soil regions.

Purpose

Dry wells manage stormwater runoff by allowing it to percolate slowly into the surrounding soil, reducing surface water accumulation and preventing flooding. They are particularly useful in areas with poor soil permeability.

Examples of Use

1. Residential Properties: Installed to manage runoff from roofs and driveways, preventing water pooling.
2. Commercial Sites: Used in parking lots and landscaped areas to control stormwater.
3. Agricultural Land: Helps manage excess water in fields, improving soil drainage.

Related Terms

• French Drain: A trench filled with gravel or rock containing a perforated pipe that redirects surface water away.
• Soakaway: A pit filled with coarse aggregate that allows water to soak into the ground.
• Stormwater Management: Practices and structures used to control and use rainwater runoff.

Notes

• Regular maintenance is required to ensure dry wells do not become clogged with sediment.
• They should be sized appropriately based on the volume of runoff and soil conditions.