Environmental Rules in Billings, MT (2026)
5 verified environmental rules for Billings, Montana, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Billings bills every premises in the city a monthly storm sewer system service charge to fund stormwater infrastructure, under City Code Article 22-800.
Billings Storm Sewer Service Charge
Some RestrictionsSec. 22-803, Billings City Code
A monthly storm sewer system service charge is imposed and made applicable to all premises within the city limits. Stormwater service charges shall be included with the monthly utility billing. All charges shall be assessed to premises within the city upon a methodology and at a rate to be established by council resolution and in accord with MCA 7-13-4304. All storm sewer system service char...
Erosion Control
Construction disturbing 1+ acre, or within 50 feet of a watercourse, must file a Notice of Intent and Storm Water Pollution Prevention Plan with Billings before breaking ground, under the city's Chapter 28 stormwater rules.
Billings Erosion & Sediment Control
Some RestrictionsSec. 28-401(a)
The city will require at a minimum an executed copy of the state standard notice of intent (NOI) form for a storm water discharge associated with construction activity under the general permit and a storm water pollution prevention plan (SWPPP), and a notice of termination (NOT) for construction sites either one acre or larger, for each phase of a construction site that exceeds one acre, or wit...
Flood Zones
Billings requires a floodplain permit before any fill, structure, or artificial obstruction is placed in a mapped flood hazard area, administered under the city's Floodplain Hazard Management Regulations tied to FEMA and DNRC flood maps.
Billings Floodplain Development Permit
Some RestrictionsSec. 6-1642
A permit is required within the regulated flood hazard area for a person to establish or alter an artificial obstruction, nonconforming use or development... Artificial obstructions and nonconforming uses in a regulated flood hazard area not exempt under subsections 6-1661(a) and 6-1662(a) are public nuisances unless a floodplain permit has been obtained.
Boat Dock Permits
Billings requires a floodplain permit before building a boat dock, marina, or similar accessory structure anywhere in the regulated floodway.
Billings Boat Dock Floodway Permit
Some RestrictionsSec. 6-1661(b)(10)
(b)Uses requiring permits. Uses specifically listed in this section may be allowed by permit within the floodway... (10)Structures accessory or appurtenant to permitted uses such as boat docks, loading and parking areas, marinas, sheds, emergency airstrips...provided that: a.The structures are not intended for human habitation...g.Structures are firmly anchored to prevent flotation;...i.The str...
Flood Elevation Requirements
Billings requires new and substantially improved buildings in the regulated flood hazard area to elevate the lowest floor at least two feet above the base flood elevation, engineer-certified.
Billings Requires 2-Foot Flood Freeboard
Some RestrictionsSec. 6-1662(b)(1)o
Elevation. The lowest floor elevation (including basement) must be two (2) feet above the base flood elevation. A determination of the base flood elevation shall be certified by an engineer. Elevating may be by either suitable fill, stem walls, pilings or other acceptable means
Looking for Yellowstone County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Billings city rules.
Environmental Rules in Yellowstone County →