Environmental Rules in Noblesville, IN (2026)
4 verified environmental rules for Noblesville, Indiana, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Noblesville runs a federally mandated Phase II Municipal Separate Storm Sewer System (MS4) program administered by the Indiana Department of Environmental Management (IDEM) under 327 IAC 15-13 (the former 'Rule 13') and the IDEM MS4 General Permit. The local ordinance is Chapter 52 (Stormwater Management) of the Noblesville City Code, including the Illicit Discharge ordinance adopted as Ordinance 23-4-05. The MS4 Coordinator is Mykel Overby in the City Engineering Department at 16 S 10th Street, Noblesville, IN 46060, (317) 776-6330. The entire city drains to the Upper White River watershed via the White River, Cicero Creek, Stony Creek, and other tributaries.
Stormwater Management in Noblesville
Heavy RestrictionsErosion Control
Construction-site erosion and sediment control in Noblesville is governed by the Indiana Construction Stormwater General Permit (CSGP) administered by IDEM, plus Chapter 52 of the Noblesville City Code and the Noblesville Stormwater Technical Standards Manual. Sites disturbing one acre or more (or less than one acre if part of a larger common plan of development or sale) require a CSGP Notice of Intent (NOI) filed with IDEM and a site-specific Stormwater Pollution Prevention Plan (SWPPP) reviewed by City Engineering. Per Indiana HEA 1037 (May 1, 2025), local rules cannot exceed CSGP requirements.
Erosion Control in Noblesville
Heavy RestrictionsFlood Zones
Noblesville participates in the National Flood Insurance Program (NFIP) and the Community Rating System (CRS) to reduce flood insurance costs for residents. Flood Hazard (FH) zoning is established in the Noblesville Unified Development Ordinance based on the FEMA Flood Insurance Rate Maps (FIRMs) for Hamilton County. The White River runs through the city with Cicero Creek (draining Morse Reservoir) joining downtown, plus Stony Creek and smaller tributaries — all create extensive Special Flood Hazard Areas (SFHAs). The Certified Floodplain Manager is Denise Aschleman, Assistant Director of Planning and Development, at (317) 773-4614 / (317) 776-6325.
Flood Zones in Noblesville
Heavy RestrictionsGrading & Drainage
Grading and drainage on Noblesville development sites is regulated by Chapter 52 of the Noblesville City Code (Stormwater Management), the Noblesville Stormwater Technical Standards Manual, and the IDEM Construction Stormwater General Permit (CSGP). Post-construction stormwater quality measures and site drainage are reviewed by City Engineering before issuance of a building permit. Indiana HEA 1037 (effective May 1, 2025, codified at IC 36-1-3-14) limits local construction stormwater rules to no more than the IDEM CSGP requires.
Grading and Drainage in Noblesville
Heavy RestrictionsLooking for Hamilton County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Noblesville city rules.
Environmental Rules in Hamilton County →