These are the facilities used to manage storm water from existing development and provide capacity to manage storm water from future development. When managing storm water the utility focuses on conveyance and treatment of storm water.
Conveyance means making sure storm water flows to a receiving water without causing physical damage or unsafe conditions. This helps meet the goals of protecting property and preventing flooding.
Treatment means making sure that it is not so contaminated that it will have a negative impact on the receiving water quality and other resources that depend on the quality of the receiving water. This helps meet the goals of protecting ground water, public health and fisheries.