Rio Rancho, NM Environmental Rules: Flood Elevation Requirements (2026)
Key Facts
- Freeboard
- 1 foot above BFE
- Applies to
- lowest floor incl. basement
- Certification by
- PE, architect, or surveyor
- Nonresidential alternative
- floodproof to 1 ft above BFE
Summary
New or substantially improved homes in Rio Rancho's flood hazard areas must have their lowest floor built at least one foot above the base flood elevation and sit completely outside the erosion hazard area, per § 152.24.
New construction and substantial improvement of any residential structure shall have the lowest floor, including basement, elevated a minimum of one foot above flood elevation and be completely outside the area of erosion hazard. A registered professional engineer, architect or land surveyor shall submit a certification to the Floodplain Administrator that the standard of this section is satisfied.
Full Breakdown
Rio Rancho defines BASE FLOOD ELEVATION (BFE) as the water-surface elevation produced by the 1%-annual-chance base flood (§ 152.04). For residential construction, § 152.24 sets the local freeboard: the lowest floor, including any basement, has to sit at least one foot above that BFE and land completely outside the erosion hazard buffer along major channels. A registered professional engineer, architect or land surveyor must certify compliance to the Floodplain Administrator. Nonresidential buildings get an alternative under § 152.25: floodproof to one foot above BFE instead of elevating, with engineer certification either way.
Violations & Fines
Occupying or building a structure below the required one-foot freeboard, or inside the erosion hazard area, is a code violation carrying a fine up to $500, up to 90 days in jail, or both.
Frequently Asked Questions
How much freeboard above the base flood elevation does Rio Rancho require?
What counts as the base flood elevation?
Sources & Official References
Other rules in Rio Rancho
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