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.
Detention basin. A detention basin or retarding basin is an excavated area installed on, or adjacent to, tributaries of rivers, streams, lakes or bays to protect against flooding and, in some cases, downstream erosion by storing water for a limited period of time.
Detention (dry) basin. The main difference between a detention and a retention basin is whether or not it has a permanent pool of water â like a traditional âpondâ. The water level is established by the low flow orifice. Most of the time the orifice is part of a metal or concrete structure called a riser.