The Great Lakes Observing System provides end-to-end data services that support science, policy, management, and industry in the Great Lakes.

Get Started

We're launching the Smart Great Lakes Initiative as part of our strategic plan for 2020-2025. The initiative exists to modernize an information ecosystem based on Great Lakes environmental data in order to improve understanding, use, and management of the lakes.

Lakebed 2030

Lakebed 2030

Lakebed 2030 is the initiative to build a better basemap of the Great Lakes.

Made for the Great Lakes, Seagull will make actionable, real-time insights available on-demand and make contributing data a possibility for more observers than ever before.

Hot Topics

Get to know the Great Lakes Observing System

GLOS News

A Spotter buoy floats alongside two marker buoys in Lake Superior

Watch a free-floating buoy’s journey through Lake Superior

Posted by GLOS_Admin June 9th, 2021

A Spotter buoy floats near Stannard Rock Lighthouse in Lake Superior

Anchor-free: Researchers plan an unmoored buoy experiment for late May

Posted by GLOS_Admin May 18th, 2021

Mini-grant Awardees Announced

Posted by GLOS_Admin May 13th, 2021

Events

A map showing the mapped regions of the Great Lakes

Sept. 29 – Oct. 1 | Lakebed 2030 Conference

Posted by GLOS_Admin May 20th, 2021

May 20 – Nov. 18 | Mapping the Great Lakes – Virtual Webinar Series

Posted by GLOS_Admin May 14th, 2021

Subscribe and get all our updates

Sign Up