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.
The retention volume in a dry pond is recovered using infiltration allowing soil microbes to consume pollutants. Functioning this way, a detention pond is sometimes known as dry retention. Similarly, the difference between the maximum elevation and the permanent pool is the detention volume. In this way, a wet pond may be known as a wet detention pond. Stormwater facilities are a critical part of protecting our rivers, lakes, and streams from erosion and pollutants from construction and development activities.