Environmental Rules in Wyoming (2026)

6 rules on the books across Wyoming, 1 city or county. Select a rule to read the full details.

Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions

Stormwater Management

Requirements for managing rainwater runoff on your property, including retention basins, permeable surfaces, and drainage plans.

The Wyoming Department of Environmental Quality administers the Wyoming Pollutant Discharge Elimination System, which…

Cheyenne bans dumping anything but rain into the storm drain system, and the city engineer enforces it under the Urban…

Rules to prevent soil erosion during construction and landscaping, including required sediment barriers and ground cover standards.

Wyoming requires erosion and sediment controls on construction sites under WYPDES Construction General Permits issued…

Any construction project in Cheyenne covered by a WYPDES construction stormwater permit must comply with that permit's…

Building requirements for properties in FEMA flood zones, including elevation standards, flood insurance mandates, and construction limits.

New homes and additions in Cheyenne's mapped flood hazard areas need a development permit and must sit at least one…

FEMA NFIP minimum base flood elevation (BFE) construction standards for properties in mapped flood zones, including freeboard requirements above BFE.

Cheyenne requires new and substantially improved structures in mapped flood hazard areas to sit at least one foot above…