Stormwater is the flow of water which results from, and occurs during and immediately following, a rainfall, snow- or ice- melt event. Stormwater management is any measure taken to permanently reduce or minimize the negative impacts of stormwater runoff quantity and quality. Stormwater management is often implemented to mitigate the impacts of land development. Effective stormwater management depends on proper planning, design, installation, and continuing maintenance of management practices.
A Stormwater Management Permit is required for any of the following:
For more information regarding the different permits issued by the Water Resource Engineering Division, please see the Permit Information Sheet.
For more information on whether your site needs to meet redevelopment or new development standards, see Redevelopment guidance.
Download and print:
Additional forms that may need to be submitted with your permit application(s):