Drainage Boundaries 2018 - Regulated Closed Basins

Important Notice: This regulatory feature layer is the result of analysis performed by Tallahassee - Leon County GIS and approved by engineering staff at City of Tallahassee Growth Management and Leon County Environmental Management. Drainage areas have been analyzed to determine which watersheds are considered Regulated Closed Basins as defined in local land development regulations. For more information regarding water quality and development standards in regulated closed basins, please contact the permitting agency for this jurisdiction. This feature layer view displays a subset of Hydro-Corrected Watershed Boundaries for areas of Tallahassee and Leon County Florida that have been designated as regulated closed basins by the Leon County Board of County Commissioners and Tallahassee City Commission. This feature layer was generated from a 2018 digital elevation model of Leon County, Florida. Regulatory Designations: In cooperation with TLCGIS, this layer has been reviewed by Leon County engineering staff to determine which watersheds are considered Regulated Closed Basins as defined in Chapter 10 Leon County Code of Laws. Water Quality Treatment Standards - Closed Basin Definition Any closed basin which has been identified and mapped as a regulated closed basin by the Board of County Commissioners; or Any closed basin for which it can be shown by hydrologic analysis that cumulative increases in runoff volume from potential development patterns will cause a significant adverse impact on the frequency, duration, or extent of flooding.