Oklahoma Floodplain Management Act — State Mandate to Adopt Local Floodplain Ordinance (OK)
Tracked preemption from the Oklahoma overlay bundle.
Overview
← All state preemptionsOklahoma overlay roll-upOklahoma zoning wikiOklahoma building codesFederal overlaysGlossaryFederal-conflict: Yes
Effective
1980-01-01
Sunset
—
Authority
state
Scope
state:OK
Other Oklahoma preemptions
McGirt v. Oklahoma — Five Tribes + Secondary Reservation Overlay (Criminal Jurisdiction Settled; Civil/Zoning Unresolved)Oklahoma §52-137 — Oil & Gas Surface-Use Preemption (Corporation Commission Exclusive Jurisdiction)Oklahoma Wind Energy Development Act — Setbacks, Decommissioning, NoticeOklahoma §11-47-150 — Military Airfield Influence Zoning (Tinker / Fort Sill / Vance / Altus / McAlester)Oklahoma Brownfields Voluntary Redevelopment Program — DEQ Oversight + Liability LimitOklahoma Local Development Act — Tax Increment Finance DistrictsOklahoma §11-43-107 — Manufactured Housing Anti-Exclusion (Municipal) + §19-865.64a (County)Oklahoma Right to Farm Act — Agricultural Activity Protection from Nuisance + Zoning Encroachment
Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
OR
parcel.in_designated_floodplain==Trueparcel.in_fema_sfha==Trueparcel.contains_state_jurisdictional_wetland==True
Preempted fields
3 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
jurisdiction.floodplain_administrator_required | require | True | §1601 et seq.: every Oklahoma political subdivision with NFIP-mapped flood hazard within its limits SHALL adopt floodplain regulations meeting or exceeding 44 CFR §60.3 minimum standards and designate a certified floodplain administrator |
base_districts[*].finished_floor_elevation_above_bfe_ft | floor_at | 1 | OWRB Model Floodplain Ordinance recommends ≥1 ft freeboard above base flood elevation; many OK communities adopt 2 ft for CRS credit |
review_type | require | floodplain_development_permit |
Citation
Authority source
Okla. Stat. tit. 82 §§1601 through 1620 (Oklahoma Floodplain Management Act); administered by the Oklahoma Water Resources Board (OWRB); federal floor at 44 CFR §60.3 (NFIP)
§ §§1601 et seq.
Research notes
Oklahoma has no comprehensive state wetlands statute paralleling Tennessee's WQCA — wetlands regulation defaults to federal CWA §404 (USACE) plus the floodplain framework. State wetland strategy is coordinated through the OK Conservation Commission. Carry per-city: `floodplain_admin_certified: bool`, `freeboard_ft: int`, `nfip_crs_class: int|null`. Federal conflict check applies — local rule cannot drop below 44 CFR §60.3.