All new development shall evaluate the stormwater impacts, created by their project, to off-site existing, stormwater systems that receive runoff from the new development. These off-site systems may be open ditches, streams, or pipe.

All new development shall comply with the following peak flow requirements for stormwater runoff control. The post-development stormwater runoff rate leaving the site shall not exceed the pre-development (existing conditions) stormwater runoff rate leaving the site for the local 1-year 24- hour event, and in fact must reduce peak runoff by 20% for both the 1-and 2-year 24-hour storm events and 10% for both the 10- and 25-year 24-hour storm events.

Peak Flow Fee In-Lieu Ledger- December 2026

For more information see the UDO 12.5.3(C) for the Peak Flow Fee In-Lieu document.