Minnehaha County, SD Fire Regulations: Wildfire Zones (2026)

Minnehaha County is the most populous and fastest-growing county in South Dakota but is dominated by tallgrass/mixed-grass prairie, cropland, and the Big Sioux River corridor - not the forested Black Hills WUI where wildfire mitigation is most acute (Pennington, Lawrence, Custer, and Fall River counties carry the higher Black Hills wildfire load). The National Weather Service offices in Sioux Falls and Rapid City jointly issue the South Dakota Grassland Fire Danger Index daily during fire-weather season (April 1-October 31), using 5 categories: Low, Moderate, High, Very High, Extreme. Index categories drive: (1) SDCL 34-37-19 county fireworks restrictions (auto-trigger at Extreme), (2) MC34-04 county-declared burn bans, and (3) Forest Service / rural fire district incident response. The Minnehaha County Multi-Jurisdictional Hazard Mitigation Plan (FEMA-approved) addresses wildfire/grassland fire alongside tornado, flood, severe storm, and winter hazards. The Minnehaha County Zoning Ordinance does not adopt the IWUIC (International Wildland-Urban Interface Code) and does not require Class A roofing, ember-resistant venting, or defensible space. The 2021 IRC and IBC adopted by the county apply standard fire-resistive construction but no WUI overlay.