Environmental Rules in Fort Collins, CO (2026)
5 verified environmental rules for Fort Collins, Colorado, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Fort Collins bans dumping pollutants or contaminated water into streets, watercourses or the storm drainage system under City Code § 26-498. The Utilities Executive Director enforces water quality standards on the stormwater utility created by Article VII of Chapter 26, with violations charged as misdemeanors under § 26-499.
Fort Collins Stormwater Discharge Rules
Significant RestrictionsFort Collins City Code § 26-498(a)
The City storm drainage facilities are intended to be used only for the purpose of collecting water deposited as a result of meteorological precipitation. No person shall make or maintain at any time a connection to a storm drainage facility to convey flows other than storm drainage flows and uncontaminated groundwater flows. Except where suitable treatment has been provided, no person shall di...
Erosion Control
Fort Collins requires a Stockpiling Permit before fill dirt is placed on property that isn't already covered by an approved development plan, and the City Engineer reviews every application against the erosion control standards written into the City's Stormwater Criteria Manual. The rule comes from the Transitional Land Use Code and governs applications filed before May 17, 2024.
Fort Collins Stockpiling Erosion Control Permit
Some RestrictionsTransitional Land Use Code §§ 2.6.1, 2.6.3(H)
2.6.1 - Purpose (A)A stockpiling permit is required in order to regulate the placement of fill dirt on properties not covered by a site specific development plan, to protect against adverse impacts to floodplains, drainage systems, natural areas, wildlife habitat, wetlands or other areas of public interest, and to assure that public nuisances will not be created by the stockpiling activities. ....
Flood Zones
Fort Collins requires a floodplain use permit from the Utilities Executive Director before any construction or development begins in a designated flood hazard area, under City Code § 10-27. The City adopted FEMA's Flood Insurance Study and Rate Map plus its own Poudre River and City basin floodplain studies under § 10-19, and violators face misdemeanor penalties under § 10-22.
Fort Collins Floodplain Development Permit
Significant RestrictionsFort Collins Municipal Code § 10-27
A floodplain use permit shall be obtained from the Utilities Executive Director before any construction or development begins within any flood hazard area established pursuant to this Article. A floodplain use permit shall also be required for any construction or development of or affecting a critical facility in the Poudre River five-hundred-year floodplain or a zone X shaded area, if that cri...
Defensible Space
Fort Collins adopted the state's 2025 Colorado Wildfire Resiliency Code but stripped out every base-code section that would have mandated defensible-space vegetation clearance. Section 5-371 deletes the model code's materials, plantings, and tree/shrub-spacing rules in their entirety, leaving no local vegetation-clearance mandate.
Fort Collins Defensible Space Vegetation Rules
Few RestrictionsFort Collins Municipal Code § 5-371, items 12-18
12.Section 502.1.2 Materials is deleted in its entirety.13.Section 502.1.3 Plantings is deleted in its entirety.14.Section 502.1.4 Trees is deleted in its entirety.15.Section 503.2.4 Trees is deleted in its entirety.16.Section 503.2.4.1 Tree Spacing is deleted in its entirety.17.Section 503.2.5 Shrubs is deleted in its entirety.18.Section 503.3.2 Tree Spacing is deleted in its entirety.
Flood Elevation Requirements
Fort Collins requires the lowest floor and all mechanical equipment of new construction, additions, substantial improvements, and redevelopment in a mapped flood hazard area to sit above the base flood elevation itself, not at it. The added cushion, called the regulatory flood protection elevation, runs 24 inches above base flood elevation along the Poudre River and 12 to 18 inches in FEMA and City basin floodplains under Municipal Code Section 10-37.
Fort Collins Base Flood Elevation Freeboard Rule
Some RestrictionsFort Collins Municipal Code § 10-37(b)-(c)
(b)Requirement to elevate. In any flood hazard area, the duct work, heating, ventilation and air conditioning systems, hot water heater, electrical and the lowest floor level of any structure in the event of any new construction, addition, substantial improvement or repair of substantial damage, or redevelopment must be elevated to or above the applicable regulatory flood protection elevation.....
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