Environmental Rules in Boone County, KY (2026)
4 rules for unincorporated Boone County, Kentucky.
Verified from official government sources
Stormwater Management
In unincorporated Boone County, Kentucky, stormwater, roof runoff, and groundwater drainage may not be routed into the sanitary sewer system operated by the county's wastewater district. Boone County Code § 51.019 requires uncontaminated stormwater to go to storm sewers or natural outlets, and § 51.061 separately bars connecting roof, foundation, or parking-lot drains to any wastewater sewer without written approval.
Stormwater Discharge Rules, Boone County KY
Some RestrictionsBoone County Code § 51.019
All uncontaminated discharges of stormwater, surface water, groundwater, roof runoff, subsurface drainage, or other waters not required to be treated in the treatment facility shall be made to storm sewers or natural outlets designed for discharges, except as authorized under § 51.061. Any connection, drain, or arrangement that will permit waters to enter any other wastewater sewer be deemed to...
Erosion Control
In unincorporated Boone County, Kentucky, soil erosion on subdivision grading work and on individual-lot building permits is enforced by the County Fiscal Court together with the Public Works Department and the Building Inspection Department under Boone County Code Chapter 155.
Erosion Control on Building Sites, Boone County KY
Some RestrictionsBoone County Code § 155.10
(A) Soil erosion on property located in unincorporated Boone County and Union and related to grading work performed as a result of approved improvement plans for subdivisions shall be the responsibility of the County Fiscal Court and the Public Works Department. (B) Soil erosion and inspection of natural drainage and drainage facilities on property located in unincorporated Boone County, Fl...
Flood Zones
In unincorporated Boone County, Kentucky, anyone building or developing land inside a mapped special flood hazard area must first get a floodplain development permit from the Floodplain Administrator under Code § 151.20. The application needs scaled site plans and proposed elevations before local endorsement clears the way for a state floodplain construction permit.
Boone County KY Floodplain Development Permit
Some RestrictionsBoone County Code § 151.20
A development permit shall be obtained before any construction or other development begins within any special flood hazard area established in § 151.06. Application for a development permit shall be made on forms furnished by Floodplain Administrator prior to any development activities, and may include, but not be limited to, the following: plans in duplicate drawn to scale showing the nature, ...
Flood Elevation Requirements
Boone County, Kentucky's Code § 151.31 sets the county's freeboard standard: new or substantially improved residential and nonresidential structures in a mapped flood hazard area must have their lowest floor, mechanical equipment and ductwork elevated at least one foot above the base flood elevation, with stricter rules in AO Zones lacking a mapped depth number.
Boone County KY Flood Elevation Freeboard
Some RestrictionsBoone County Code § 151.31(A)
(A) Residential construction. New construction or substantial improvement of any residential structure (or manufactured home) shall have the lowest floor, including basement, mechanical equipment, and ductwork elevated no lower than one foot above the base flood elevation. Should solid foundation perimeter walls be used to elevate a structure, openings sufficient to facilitate the unimpeded m...
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