Executive Order 11988: Floodplain management
Summary
Jimmy Carter's Executive Order 11988 requires federal agencies to consider flood hazards before supporting development in floodplains. Signed May 24, 1977, it favors practicable alternatives outside the floodplain and calls for harm reduction and public explanation when an agency proceeds inside one. The order governs federal decisions about property, construction, assistance and relevant land-use programs. It is distinct from an insurance policy or a local building permit, even though those systems can be relevant to the same project.
Status: In effect. Yes. EO 11988's underlying floodplain-management duties continue as amended. The Federal Flood Risk Management Standard added in 2015 has a separate revocation and reinstatement history; FEMA stopped implementing that standard on March 25, 2025 after EO 14148. A June 2026 FEMA project notice published by Tennessee's emergency-management agency still invokes EO 11988 and 44 CFR part 9.
Key facts at a glance
| Signed | May 24, 1977 |
|---|---|
| President | Jimmy Carter |
| Federal Register | 42 FR 26951; published May 25, 1977 |
| Current label | In effect |
| Amended by | EO 12148, EO 11514, EO 33198, EO 13690 |
| Related orders | EO 11296, EO 12148, EO 11990, EO 13690, EO 13807, EO 14030, EO 14148 |
| Checked | October 25, 2026 |
What it requires today
An agency first determines whether its proposed action is in a floodplain, using the available mapping and other appropriate information. It must consider alternatives that avoid adverse effects and incompatible development. Where the only practicable alternative consistent with law and the order's policy requires a floodplain location, the agency must modify its action to minimize harm and circulate an explanation before proceeding. The sequence is an alternatives-and-decision process, not simply a final-stage warning on an already approved project.
For federal structures and facilities, the order connects design to National Flood Insurance Program standards and calls for accepted floodproofing and protection measures. Where practicable it favors elevation above the base flood level over filling land. It also addresses leases, easements and disposals of federal floodplain property, including disclosure of restricted uses and appropriate conditions on conveyance. These provisions reach more than a new building financed entirely by an agency.
Section 4 requires covered agencies to inform private participants about flood hazards before completing specified financial transactions. Agencies must also account for floodplain management in plans, budget requests and relevant permit, loan and grant procedures. The original text defines a base flood by a one-percent-or-greater annual chance, but later standards and current agency rules need separate examination. A historical definition is not enough to establish today's design elevation for every federal program.
Who it affects
The direct responsibility rests with agencies undertaking the covered activities, including military departments where applicable. Grant applicants, housing recipients, property purchasers and communities may encounter agency conditions or public notices resulting from that responsibility. Section 9 permits appropriate applicants to assume particular duties for covered community-development projects when they have also assumed the specified environmental-review responsibilities. That provision is not a general transfer of every federal agency's duties to every local applicant.
How it came about
EO 11988 replaced EO 11296's earlier flood-hazard instruction and preserved existing actions under that predecessor until appropriately changed. It was issued on the same day as EO 11990 on wetlands, reflecting a shared concern about federal support for damaging development. The two orders nevertheless have different definitions and coverage. EO 12148 later changed EO 11988's consultation arrangements as federal emergency functions were reorganized under FEMA. NARA's codification supplies that historical amendment text but is not a current account of every subsequent standard.
What agencies did under it
FEMA implements floodplain and wetlands review through 44 CFR part 9 and project-level decision procedures. A June 26, 2026 programmatic final notice published by Tennessee's emergency-management agency describes FEMA's review of funded generator projects and expressly invokes EO 11988. That operational record supports the continuing original framework independently of the separate history of the newer Federal Flood Risk Management Standard.
EO 13690 introduced that newer standard in 2015; EO 13807 revoked it in 2017, and EO 14030 reinstated it in 2021. EO 14148 revoked EO 14030 in January 2025. FEMA's March 25, 2025 announcement states that it stopped implementing the standard and associated policies. This account does not infer a legal revival or repeal merely from revocation of a revoker: it identifies the agency's express implementation decision and distinguishes it from EO 11988 itself.
Regulatory text has its own amendment process. HUD's July 10, 2026 proposed rescission discusses removing the newer standard while retaining requirements implementing EOs 11988 and 11990. A proposed rule is not a final effective amendment. Similarly, a unified-agenda target date does not prove a rule was issued. For an actual funded project, the agency's operative regulations, award conditions and current decision record establish the applicable process and technical standard.
Implementation records: FEMA: March 25, 2025 cessation of FFRMS implementation; HUD: July 10, 2026 proposed rescission, not a final rule; TEMA: June 2026 FEMA programmatic floodplain and wetlands notice.
Amendments and family tree
The core historical relationship is EO 11296 → EO 11988, followed by EO 12148's amendment. The later 13690–13807–14030–14148 sequence concerns the additional flood-risk standard and its implementation. EO 11990 addresses wetlands alongside the floodplain order; it is not an amendment that eliminates floodplain review. Nor does a later NEPA or permitting reform automatically revoke EO 11988 without text doing so. The current status answer preserves these distinct branches rather than presenting the entire history as one undifferentiated repeal.
Related guides: EO 12148, EO 11990, EO 13690, EO 13807, EO 14030, EO 14148.
Court cases
No court ruling specifically on EO 11988 was identified in the official order, disposition and agency sources reviewed as of October 25, 2026. A judgment about a particular floodplain project or an agency regulation would need to be read for the measure challenged and relief granted. It would not automatically establish that all floodplain duties under every federal program ended. The status here follows the cited presidential and agency records.
Common questions
Did the 2025 rescission end EO 11988?
The reviewed 2025 FEMA announcement ended implementation of the newer Federal Flood Risk Management Standard. FEMA's 2026 project notices and terms continue to identify EO 11988. The original floodplain framework and the additional standard must be distinguished.
Does the order prohibit every floodplain project?
It calls for practicable alternatives and requires findings, harm reduction and public explanation where an agency proceeds in a floodplain. That is different from an unconditional nationwide ban on all construction there.
Is this the same as flood insurance?
No. EO 11988 governs covered federal decisions and draws on flood-protection standards. Insurance requirements, eligibility and premiums arise under their own laws and program rules. One project's insurance status does not by itself demonstrate compliance with the order.
Are emergency rescue operations delayed by this process?
Section 8 excludes the specified emergency assistance essential to saving lives and protecting property, public health and safety under the cited disaster-relief provisions. The exception is defined in the order; it is not a blanket exclusion for every later recovery construction project.
Legal basis
Carter cited presidential authority and the National Environmental Policy Act, National Flood Insurance Act and Flood Disaster Protection Act. Those statutes and subsequent legislation remain relevant to implementation. EO 11988 coordinates the exercise of existing agency powers; it does not supply unlimited land-use jurisdiction or convert every private building decision into a federal undertaking.
Further reading
Sources
Cite this page
EO Explained, “Executive Order 11988: Floodplain management”, checked October 25, 2026. https://eoexplained.com/historic-orders/historic-11988-floodplain-management. Include an access date when citing this dated account. For the presidential instrument itself, cite 42 FR 26951 and the official text.
Last checked
. EO 11988 was checked against its signed record, current disposition and cited implementation sources for the status and scope described above. Report an error or a later official source.