Above or below ground detention pond cleaning can be done with hydro excavators or air mover vacuum trucks.

Again, there is minimal damage to the surrounding environment, the operation is safe for the workers, and location of the truck can be very remote if needed while cleaning the ponds. Hydro excavation is also an ideal solution for cleaning of head walls, catch basins, sewer manholes, sludge removal, cleaning of spills, etc.
Detention Pond Cleaning with Hydro Excavation

Retention Pond Cleaning with
Hydro Excavation

Hydro Excavation Videos