Environmental Rules in Troy, MI (2026)
4 verified environmental rules for Troy, Michigan, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
Troy requires every development project subject to site plan review to use best management practices meeting the city's Engineering Design Standards, as set by the City Engineer. Section 12.02 of the Zoning Ordinance mandates on-site stormwater storage, limits impervious surfaces and grading, and requires oil separators on sites with heavy grease and oil runoff.
Troy Stormwater Management Requirements
Some RestrictionsTroy Zoning Ordinance § 12.02
A. Intent. The intent of this Section is to encourage the use of structural, vegetative or managerial practices, commonly referred to as best management practices (BMP's), designed to treat, prevent, or reduce degradation of water quality due to storm water runoff. All development projects subject to site plan review shall use best management practices (BMP's) to prevent flooding, protect water...
Erosion Control
Troy requires a Soil Erosion and Sedimentation Control (SESC) permit for any earth change disturbing more than one acre, or coming within 500 feet of a lake or stream regardless of size. Chapter 86, enacted under Part 91 of Michigan's NREPA, puts the City Engineer in charge of review, inspection, and enforcement.
Troy Soil Erosion and Sediment Control Permit
Some RestrictionsTroy City Code, Chapter 86, §§ 4(A), 4(D) (Soil Erosion and Sedimentation Control Requirements)
D. No person shall engage in and/or maintain an earth change activity which will disturb more than 1 acre of land, or which lies within 500 feet of the water's edge of a lake or stream, regardless of the amount of land disturbed, without a valid SESC permit issued under this ordinance. ... A. It shall be a violation of this ordinance for any person to engage in and/or maintain any earth change ...
Flood Zones
Troy requires a floodplain development permit before any grading, filling, building or other development inside an area of special flood hazard. The City Engineer reviews every application, and the floodway itself is off-limits to new construction unless an engineer certifies zero rise in flood elevation.
Troy Floodplain Development Permit
Some RestrictionsTroy Code of Ordinances, Chapter 42 - Flood Plain Management, Sec. 4 (Development Requirements)
The owner shall not perform any development nor shall the owner allow others to perform any development of any property within an area of special flood hazard without first having secured a development permit(s). Necessary development permits shall have been issued by appropriate local, state and federal authorities, including but not limited to: a floodplain permit, approval, or letter of no a...
Flood Elevation Requirements
Any new residential structure or substantial improvement inside a Troy flood hazard area must have its lowest floor, including the basement, at least one foot above the base flood elevation. Nonresidential buildings get the same option or can flood-proof instead, with engineer certification.
Troy Base Flood Elevation Freeboard
Some RestrictionsTroy Code of Ordinances, Chapter 42 - Flood Plain Management, Sec. 6(1)(a) (Specific Base Flood Elevation Standards)
On the basis of the most recent available base flood elevation data the following standards shall apply in the area of special flood hazard: (a) all new construction and substantial improvements of residential structures shall have the lowest floor, including basement, elevated to a minimum of one (1) foot above the base flood level.
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County ordinances apply to unincorporated areas and may supplement Troy city rules.
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