Environmental Rules in Granville County, NC (2026)
3 rules for unincorporated Granville County, North Carolina.
Verified from official government sources
Stormwater Management
Development inside the Falls Lake watershed portion of unincorporated Granville County needs a stormwater permit under the Falls Watershed Stormwater Ordinance, Sec. 32-390 et seq., which caps nitrogen and phosphorus loading, sets a one-inch-of-rainfall treatment standard, and bars any net increase in peak runoff for the one-year, 24-hour storm. The county stormwater administrator reviews and enforces every application.
Granville County Stormwater Management Rules
Some RestrictionsGranville County Code §§ 32-401(1), 32-406(1), 32-408
(1)Permit required; must apply for permit. A stormwater permit is required for all development and redevelopment unless exempt pursuant to this division. A permit may only be issued subsequent to a properly submitted and reviewed permit application, pursuant to this section. ... (1)Nitrogen and phosphorus loads contributed by the proposed new development shall not exceed the following unit-area...
Flood Zones
Sec. 32-318 requires a floodplain development permit before any development activity begins in a special flood hazard area of unincorporated Granville County, mapped against the FEMA flood insurance study the county adopted effective December 6, 2019. The county's zoning administrator serves as floodplain administrator and reviews the permit application before work can start.
Granville County Floodplain Development Permit
Some RestrictionsGranville County Code §§ 32-317, 32-318, 32-323
The special flood hazard areas are those identified under the cooperating technical state (CTS) agreement between the State of North Carolina and FEMA in its flood insurance study (FIS) dated December 6, 2019 for Granville County and associated DFIRM panels, including any digital data developed as part of the FIS, which are adopted by reference and declared to be a part of this division. ... A ...
Flood Elevation Requirements
Sec. 32-315 defines the "regulatory flood protection elevation" that governs construction in Granville County's mapped flood hazard areas as the base flood elevation (BFE) plus two feet of freeboard. Where FEMA has not mapped a BFE, the same elevation floor applies at two feet above the highest adjacent grade.
Granville County Flood Elevation Freeboard Rule
Some RestrictionsGranville County Code § 32-315
Freeboard means the height added to the base flood elevation (BFE) to account for the many unknown factors that could contribute to flood heights greater than the height calculated for a selected size flood and floodway conditions, such as wave action, bridge openings, and the hydrological effect of urbanization on the watershed. The base flood elevation plus the freeboard establishes the "regu...
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