Environmental Rules in Lincoln County, SD (2026)
4 rules for unincorporated Lincoln County, South Dakota.
Verified from official government sources
Stormwater Management
Every new subdivision in unincorporated Lincoln County, South Dakota must submit a drainage plan covering detention ponds, drainage channels and easements. Post-development runoff cannot exceed pre-development flow rates, and the Board of Commissioners' Planning and Zoning process reviews the five-, 25- and 100-year storm events before approving any plat.
Lincoln County Subdivision Drainage Plan Rules
Some RestrictionsLincoln County Code § 152.096
§ 152.096 DRAINAGE PLAN. ... (A) All drainage facilities, including on-site detention, drainageways, detention ponds, and drainage channels, shall be shown on the drainage plan. ... (2) A natural or established watercourse requires a minimum of a 40-foot easement; (3) The five-, 25-, and 100-year storm event for predevelopment conditions and post development conditions shall be shown. The...
Erosion Control
Development sites in unincorporated Lincoln County, South Dakota must control erosion to the standards of the county's Conservation District, minimizing vegetation stripping and regrading and retaining natural vegetation on ditches and drainageways. The Planning Director, with the Conservation District, can order extra measures and can require site plans to withstand a two-year rain event.
Lincoln County Construction Erosion Control Rules
Some RestrictionsLincoln County Code § 152.110
§ 152.110 SPECIFICATIONS. ... (A) Measures used to control erosion on a development site shall, at a minimum, meet the standards and specifications of the county's Conservation District. Stripping of vegetation, regrading, and cut and fill operations should be kept to a minimum, as should the amount of land and the duration of exposure. ... The Planning Director, with assistance of the Conser...
Flood Zones
Anyone developing in a flood hazard area of unincorporated Lincoln County, South Dakota needs a permit from the county Floodplain Administrator before starting work. The permit covers Zone A and AE on the FEMA flood map and any land within 100 feet of distance or eight feet of elevation of a special flood hazard area.
Lincoln County Floodplain Development Permit
Some RestrictionsLincoln County Code § 153.045
§ 153.045 REQUIRED. Any person who intends to conduct any development in a flood hazard area or buffer zone shall first make application to the Floodplain Administrator and shall obtain the required permit prior to the start of development. Permits are required for all proposed construction and other developments, including the placement of manufactured homes, within Zone A or AE on the comm...
Flood Elevation Requirements
New and substantially improved residential structures in Lincoln County, South Dakota's flood hazard areas must have their lowest floor built at least two feet above the base flood elevation. A registered professional engineer, architect or land surveyor must certify to the Floodplain Administrator that the elevation was met.
Lincoln County Flood Freeboard Elevation Rule
Some RestrictionsLincoln County Code § 153.066(A)
§ 153.066 SPECIFIC STANDARDS. In all areas of flood hazard where base flood elevation data has been provided as set forth in this chapter, the following provisions are required: (A) Residential construction. New construction and substantial improvement of any residential structure shall have the lowest floor (including basement), elevated to at least two feet above the base flood elevat...
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