Great Lakes water levels

Fluctuation in Great Lakes water levels is natural and vital for the lakes’ health. But lake level changes are expected to become more extreme, with higher highs and lower lows, and to happen more quickly because of climate change.

Learn more about Great Lakes water levels below.

Press Release

September 30, 2022

Alliance Applauds Agreement to Move Forward with Great Lakes Coastal Resiliency Study

Chicago, IL (September 30, 2022) – The Alliance for the Great Lakes thanks the governors of the Great Lakes states for signing an agreement to partner with the U.S. Army […]

Blog

May 12, 2022

4 Ways Climate Change Is Challenging the Great Lakes

With our abundant fresh water and temperate climate, the Great Lakes region is often thought of as a climate haven that may be off the hook from the worst impacts […]

BLOG

April 14, 2020

Great Lakes Water Levels Q & A

Q: Why are Great Lakes water levels so high? It’s natural for the Great Lakes to rise and fall over time, but the lakes are currently experiencing a period of […]

Blog

December 9, 2016

A big decision for Lake Ontario & the St. Lawrence River

Yesterday, the International Joint Commission announced the enactment of Plan 2014. Plan 2014 implements a more natural way of managing water levels on Lake Ontario and the St. Lawrence River. Water […]