answers from Chicago on. Very tiny bugs coming up the drain that hop a little are probably springtales...I goggled tiny little bugs that hop when I first encountered them and that's what came up.
Sedimentation basins are stormwater detention systems that promote settling of sediments through the. reduction of flow velocities and temporary detention. Key elements include purpose designed inlet and outlet. structures, settling pond, and high flow, overflow structures. The storage volume consists of two.
Drainage Basins - Each stream in a drainage system drains a certain area, called a drainage basin (also called a catchment or a watershed). In a single drainage basin, all water falling in the basin drains into the same stream. A drainage divide separates each drainage basin from other drainage basins.