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.
catchment basin, drainage area, drainage basin, river basin, watershed, basin. detention basin-a storage site (such as a small reservoir) that delays the flow of water downstream. retention basin-a storage site similar to a detention basin but the water in storage is permanently obstructed from flowing downstream.he area drained by a river or body of water. Also called catchment basin. 2. The surrounding area served by an institution, such as a hospital or school.