Disaster law meets endangered species law, again

What FEMA's October 2026 rewrite does to listed mussel relocations

Updated 21 October 2026

The Federal Emergency Management Agency's final rule "Implementation of Section 7 of the Endangered Species Act for Disaster Response Activities," signed by FEMA Administrator Frances Perkins-Ortiz on 6 October 2026 and published at 91 FR 72340 on 14 October 2026, rewrites how federal disaster assistance interacts with endangered species law in the field, and the operational consequences land hardest on a phylum most disaster responders never see.

Why the rule exists, and what it actually says

FEMA's rule, docket FEMA-2025-0043, has been in interim form since early 2025. The October 2026 final rule, 91 FR 72340, finalises three pieces of machinery that previously had to be negotiated between a disaster declaration, a Section 7 consultation, and a movement of species. First, it defines a new category, "emergency relocation activity," which covers any action taken within 180 days of a Stafford Act declaration that physically moves listed animals, listed plants, or the host substrate they depend on. Second, it sets a 30 day clock for informal consultation on those activities, measured from the date FEMA's regional administrator logs the activity in the new Disaster Response Activity Tracking System. Third, it incorporates by reference USFWS's 2024 Freshwater Mussel Translocation Protocol and obliges responders to follow it for any unionid species listed under the Act, including species covered by the 2023 USFWS captive-bred wildlife rule.

For listed freshwater mussels, the protocol is the operative document. It is the document that says which species can be moved at all, how they must be held, which laboratories are prequalified, and what the post-release monitoring schedule looks like. Until October 2026, following that protocol was a matter of professional judgement and a Section 10(a)(1)(A) permit. Under the new rule, it is a Section 7 obligation, enforceable against any federal disaster grant recipient, including state fish and wildlife agencies acting under FEMA public assistance.

Which mussels are in the firing line

The USFWS Translocation Protocol, last revised in 2024, names 27 freshwater mussel species as eligible for emergency relocation. The list is dominated by species of the Ohio and Tennessee river systems, the Mobile basin, and the Ozark fringes, and it includes species whose status was already precarious before the rule changed. Three of them are worth naming because the October 2026 rule changes their practical status on the ground, not their legal status under the Act.

The first is the pink mucket, Lampsilis abrupta, a species whose 2024 five-year review described its recovery prospects as depending on cooperative propagation between state agencies, the conservation hatchery at Genoa, and a small number of academic partners. The October 2026 rule does not change that cooperation. It changes the legal trigger: any disaster response in pink mucket range that touches a stream, even one that is rebuilding a bridge, now has to log the activity in DRATS, start the 30 day clock, and demonstrate compliance with the translocation protocol before sediment or structure can be moved.

The second is the sheepnose, Plethobasus cyphyus, a small mussel of the Ohio, Cumberland, and Tennessee systems. Sheepnose has been on the USFWS candidate watch list for two review cycles, and the 2026 IUCN Red List update reclassified it from Endangered to Critically Endangered in August. The FEMA rule pulls sheepnose into the emergency relocation regime whether responders want it there or not, and that means responders need a prequalified propagation partner. As of the rule's effective date, three of the seven prequalified mussel propagation facilities named in the 2024 protocol are operating at capacity.

The third is the heavy pigtoe, Plethobasus cooperianus, a species of the Ohio and Tennessee systems that has lost roughly 60 percent of its modelled suitable habitat since 2010, according to the 2026 IUCN assessment. The pigtoe is a useful illustration of the rule's reach, because its range overlaps with the most disaster-prone parts of the Ohio basin, where flooding and channel work are routine after a presidential disaster declaration. Under the new rule, the heavy pigtoe is no longer a project-by-project concern. It is a category-level concern, and the legal duties attached to it fire automatically.

What the rule obliges responders and states to do

The rule's operative provisions are in Subpart D, sections 401.41 through 401.49. Three obligations are new. Section 401.43 requires a federally declared disaster's primary agency, which is usually the state fish and wildlife agency or the U.S. Army Corps of Engineers for water projects, to log any activity that may affect a listed species in DRATS within 15 days of the declaration. Section 401.45 requires the primary agency to use only USFWS-approved propagation facilities for any listed mussel held for more than 30 days. Section 401.47 requires a post-release monitoring report, modelled on the Service's 2022 conditional release template, to be filed within 18 months of the relocation event.

For state agencies, the practical consequence is a new grant precondition. The October 2026 FEMA rule cross-references the U.S. Fish and Wildlife Service's October 2026 grant overhaul, which made Section 6 funding conditional on the state having a written, dated, and reviewed translocation plan for every listed species in the state's wildlife action revision. A state that does not have a written plan for pink mucket, sheepnose, or heavy pigtoe, on the date a disaster is declared, will be unable to draw the federal share of its public assistance and unable to draw the federal share of its Section 6 money at the same time. The two rules interlock by design, and that interlock is the operational news.

For contractors, the consequence is more direct. Any contractor working under a FEMA public assistance grant now has a contractual duty, under the rule's incorporation clause, to use only the USFWS-approved protocol, even on small projects. The rule does not create a private right of action. It does create a new basis for a FEMA Office of Inspector General finding, and that is enough to change the standard contract language used by most state transportation and natural resource agencies.

Why the timing matters for migratory species too

Readers who followed the 2026 Convention on the Conservation of Migratory Species outcomes from Samarkand will notice that the FEMA rule lands in the same fortnight as CMS COP15's final decisions, and that overlap is not a coincidence. CMS COP15's aquatic mammal annex, adopted in Samarkand on 9 October 2026, calls on parties to develop standardised response protocols for listed aquatic species affected by disaster events. The FEMA rule is, in practice, the United States' first domestic answer to that call. It is not framed that way, but the operative provisions line up closely with the CMS technical guidance circulated by the secretariat in September.

The rule does not change anything for the North Atlantic right whale or the other large cetaceans covered in earlier Creatures in Crisis coverage. Those species are not on the translocation protocol list and are not the rule's target. The rule is targeted at the species that are small, sessile, and economically invisible, the species that recovery work has always depended on the goodwill of a state biologist and a propagation facility. The October 2026 rule converts that goodwill into a federal duty.

What changes on 14 November 2026

The rule's effective date is 14 November 2026, thirty days after publication. From that date, the obligations in sections 401.41 through 401.49 bind any activity funded under a Stafford Act declaration. The Disaster Response Activity Tracking System goes live on the same day, and USFWS has committed to publishing a DRATS user guide by 7 November. State agencies have asked, through the Association of Fish and Wildlife Agencies, for a 90 day soft-start period during which DRATS entries will not trigger formal enforcement. FEMA has not yet responded to that request as of the date of this post.

The two operational questions worth watching are these. First, will the rule generate a Section 7 paperwork bottleneck that, in practice, slows disaster response in mussel country, and will that be visible in the next year's disaster declaration data. Second, will the prequalified propagation facilities hold under the load, or will the rule's own demand outrun the capacity the rule depends on. The 14 November effective date will be the first date on which both questions can be measured.