Water Levels and Flows

Update on Upcoming Outflows and Expected Conditions – June 2026

On Monday, June 8, Gates #9 through #12 will be lowered to a setting of 99 cm (39 in) open. Gate #16 will be raised to 20 cm (8 in) to allow sea lamprey trapping. Gate #1 will remain at its typical setting which supplies a flow of about 15 cubic meters per second (500 cubic feet per second) to the…

Fact Sheet - Accomplishments - Phase 2 of the Expedited Review of Plan 2014

Fact Sheet - Plan Evaluation and Ranking - Phase 2 of the Expedited Review of Plan 2014

Fact Sheet - Integrated Social, Economic and Environmental (ISEE) System - Phase 2 of the Expedited Review of Plan 2014

Fact Sheet - Performance Indicators - Phase 2 of the Expedited Review of Plan 2014

Fact Sheet - Indigenous Engagement and Performance Indicator Research - Phase 2 of the Expedited Review of Plan 2014

Fact Sheet - Role of the Public Advisory Group Phase 2 of the Plan 2014 Expedited Review

Fact Sheet - Phase 2 Overview of the Plan 2014 Expedited Review (updated version)

Fact Sheet - Phase 2 Strategy of the Plan 2014 Expedited Review (updated version)

Gate Changes on Tuesday, June 2, 2026

Anglers and other users of the St. Marys Rapids, please be advised that Gate #14 on the U.S. side of the Compensating Works at the head of the St. Marys Rapids will be adjusted multiple times on Tuesday, June 2, 2026, to facilitate flow measurements in the St. Marys Rapids.