The U.S. Army Corps of Engineers has filed a Final Environmental Impact Statement for the Lower Columbia River Channel Maintenance Plan, published in the Federal Register on May 1, 2026 as EIS No. 20260051. The document is a Final Integrated Dredged Material Management Plan and EIS covering channel maintenance activities on the Lower Columbia River in Oregon. The public review period closes on May 29, 2026. Contact for the EIS is Jess Hamilton at 541-506-8317. The PDF excerpt available is limited to a brief Federal Register notice of availability; the full EIS content, including impact tables and mitigation measures, is not reproduced here.123