Environmental Rules in Rapid City, SD (2026)
5 verified environmental rules for Rapid City, South Dakota, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Anyone disturbing earth in Rapid City needs an erosion and sediment control permit before grading, with fees scaled by site size from $100 to $500, unless the disturbance is under 300 cubic yards or another listed exemption applies, under Municipal Code Chapter 8.46.
Rapid City Construction Stormwater Permit Rules
Some RestrictionsRapid City Municipal Code § 8.46.020
A. Any person performing earth disturbing activities shall first submit for approval an erosion and sediment control permit application and plan. The fee for an erosion and sediment control permit shall be based on the size of the site as follows: 1. Site less than 10,000 square feet = $100 permit fee. 2. Site 10,000 to 43,560 square feet = $250 permit fee. 3. Site greater than 43,560 square fe...
Erosion Control
Rapid City Municipal Code § 8.34.040 requires every site, including construction sites, vacant lots and homes without landscaping, to maintain erosion and sediment control measures so soil cannot leave the site into public rights-of-way. It's enforced by the Air Quality Division within the Air Quality Control Zone under Chapter 8.34's fugitive-emissions program.
Rapid City Erosion and Sediment Control Rule
Some RestrictionsRapid City Municipal Code § 8.34.040
All sites, including but not limited to construction sites, vacant lots or homes without landscaping, shall maintain erosion and sediment control measures to prevent soil from going off site to public rights-of-way where soil can be readily reentrained.
Flood Zones
Anyone developing land inside a mapped special flood hazard area in Rapid City must get a floodplain development permit from the Floodplain Administrator before work starts. The city adopted FEMA's Flood Insurance Study for Pennington County (June 3, 2013) and its Flood Insurance Rate Maps to define those zones, and Chapter 15.32 sets the permit, review and building standards that apply inside them.
Rapid City Floodplain Development Permit
Some RestrictionsRapid City Municipal Code § 15.32.120
A floodplain development permit shall be required to ensure conformance with the provisions of this chapter. The fee for the permit application shall be as established by resolution of Common Council. A. Required. Any person, owner, or authorized agent who intends to conduct any development in a special flood hazard area shall first make application to the Floodplain Administrator and shall obt...
Boat Dock Permits
Marinas, boat rentals, docks, piers and wharves are not a right in Rapid City's FH Flood Hazard District: they need a conditional use permit. Rapid City Municipal Code section 17.28.030(D) lists them among the conditional uses the Planning Commission or Common Council may approve, subject to the flood-specific standards in section 17.28.040.
Rapid City Boat Docks Need a Flood District CUP
Significant RestrictionsRapid City Municipal Code §§ 17.28.030(D), 17.28.040
D. Marinas, boat rentals, docks, piers and wharves; ... Prior to authorizing a conditional use under this chapter, the following criteria must be met in addition to the procedures set out in § 17.54.030:
Flood Elevation Requirements
New homes and additions in Rapid City's mapped A1-30, AE and AH flood zones must set their lowest floor, including any basement, at least 1 foot above the base flood elevation under Rapid City Municipal Code § 15.32.140. Structures in AO zones must clear the highest adjacent grade by the FIRM's listed depth, or 2 feet if none is given, and a licensed engineer or surveyor must certify the finished elevation.
Rapid City Flood Elevation Freeboard Rule
Some RestrictionsRapid City Municipal Code § 15.32.140
A. New construction and substantial improvements of residential structures within Zones A1-30, AE or AH shall have the lowest floor (including basement) elevated 1 foot above the base flood elevation. B. New construction and substantial improvements of residential structures within AO Zone shall have the lowest floor (including basement) elevated above the highest adjacent grade at least as hig...