Stormwater detention ponds were created to remove 80% of phosphorus, nitrogen and suspended solids from bodies of water, but research shows that they only remove 50% or less. Most often people use the words “detention” and “retention” interchangeably, but these words mean two different types of ponds. Detention ponds hold water all year round, while retention ponds are empty until it rains and they fill up with water. These ponds are normally used for Best Management Practices (BMP”s) but scientists are looking for more effective ways to manage run off.
UF study: Stormwater ponds do little to prevent pollution in nearby lakes and ponds