Case Study: Infiltration

The regulatory body for Seabreeze Estate determined that all stormwater runoff from the development be disposed of near its source rather than conveying it to a large natural infiltration depression. This Water Sensitive Urban Design (WSUD) approach aims to mimic the natural stormwater flow characteristics that existed before urban development.

StormTech chambers were selected due to the ease of installation and infiltration properties. The use of the Isolator Row facilitates the isolation and removal of the finer silt fractions in the surface water that would normally change flow conditions and render the infiltration trench ineffective.

This project consists of 85 separate chamber beds scattered throughout the catchment and installed over a 6 month period. The beds are either directly connected to the existing public drainage system or by a swale drain from the roadway.