Clean Water Act Navigable Waters Definition
Current understanding
To be populated as evidence accumulates.
Evidence log
- 2026-09-09 — Updated Definition of “Waters of the United States”: cross-connection with waters-of-the-united-states: The WOTUS supplemental proposal is the agencies’ vehicle for implementing the Sackett decision’s narrower reading of ‘navigable waters’ under the Clean Water Act. (novelty: 3)
- 2025-12-15 — PERMIT Act: PERMIT Act (HR3898) would statutorily narrow ‘navigable waters’ by codifying exclusions for waste treatment systems, ephemeral precipitation-driven features, prior converted cropland, groundwater, and other features the Army Corps determines excluded; received in Senate and referred to Environment and Public Works Committee (2025-12-15). (novelty: 3)