Detention/Retention Basin

Impoundment constructed to detain/retain stormwater for extended periods of time and allow for the retention of pollutants in the pond through deposition of sediments and attached pollutants.


1. Release of water at a given point into a water body. 2. The rate and volume of flow of water such as in a stream, generally expressed as cubic feet per second.

Dissolved Oxygen (DO)

Amount of oxygen gas dissolved in a given quantity of water at a given temperature and atmospheric pressure. It is usually expressed as a concentration in parts per million or as a percentage of saturation.


Department of Natural Resources


Dissolved oxygen


Process of the stream channel bottom being rapidly and excessively eroded creating a deeply incised stream channel.

Drinking Water Standards

In the U.S. National Primary Drinking Water Regulations ((NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect health by limiting the levels of contaminants in drinking water.