# 2026-16644: No floating allowed: Safety zone for unsanctioned river party in MI.

2026-16644, Safety Zone; St. Clair River; Port Huron, MI, is a Federal Register rule from Homeland Security Department, Coast Guard published 2026-08-14, effective 2026-08-16; PRIA reads it as touching household money (as of 2026-08-21).

- Canonical: https://policyrisk.com/federal-register/2026-16644
- As of: 2026-08-21
- Plain-text twin of the page above; the HTML and this file carry the same facts.

## Facts
- Document number: 2026-16644
- Title: Safety Zone; St. Clair River; Port Huron, MI
- Type: Rule
- Agencies: Homeland Security Department; Coast Guard
- Citation: 91 FR 52533
- Published: 2026-08-14
- Effective: 2026-08-16
- Comments close: not stated
- Significant: no
- Touches household money: yes
- Regulation identifier numbers: 1625-AA00
- Last updated: 2026-08-21

## In one line

No floating allowed: Safety zone for unsanctioned river party in MI.

## Summary

The Coast Guard is establishing a temporary safety zone for navigable waters of the St. Clair River for 7.5 miles beginning in Port Huron, MI. Though this is an unsanctioned, non-permitted marine event, this zone is necessary to provide for the safety of life on these navigable waters during a float down event near Port Huron, MI. Entry into this zone of vessels or non-participants in the event is prohibited unless specifically authorized by the Captain of the Port Detroit (COTP) or their designated representative.

## Effects PRIA read

- Temporary boating exclusion on St. Clair River: cost, low. The Coast Guard creates a temporary safety zone covering 7.5 miles of the St. Clair River beginning at Port Huron, MI. From 12 p.m. through 6 p.m. on August 16, 2026, vessels and non-participants may not enter this zone unless specifically authorized by the Captain of the Port Detroit or their desi…

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## Sources
- [2026-16644 on federalregister.gov](https://www.federalregister.gov/documents/2026/08/14/2026-16644/safety-zone-st-clair-river-port-huron-mi)
- [2026-16644 as published (PDF)](https://www.govinfo.gov/content/pkg/FR-2026-08-14/pdf/2026-16644.pdf)

## Related
- [Previous: 2026-16643, Safety Zone; Atlantic Ocean, Culebra, Puerto Rico](https://policyrisk.com/federal-register/2026-16643)
- [Next: 2026-16645, Safety Zone; West Passage Narragansett Bay, Narragansett, RI](https://policyrisk.com/federal-register/2026-16645)
- [All Federal Register documents](https://policyrisk.com/federal-register)

Source: PRIA, https://policyrisk.com/federal-register/2026-16644 (as of 2026-08-21).