leaching basin

leaching basin

A drainage pit with sand and gravel sides constructed to allow water to dissipate.
References in periodicals archive ?
The discharges involved various facilities including tailings ponds, leach dumps, and a sewage treatment plant, but by far the major discharges came from the Copper Creek Leaching Basin, in which acidic, copper-tainted underground seepage entered Boulder Creek.
The project allows the District to clean its drainage system and nearly 35,000 catch basin and leaching basins and proper disposal of the sediments.