The Lake Improvement Association recently donated concrete cornhole boards for Sunset Beach on the northeast side of Grand Lake St. Marys.

Grand Lake St. Marys State Park Manager David Faler gave an update about the park at the May 2025 Lake Improvement Association member meeting.

Mercer County Agriculture & Natural Resources Director Theresa Dircksen offered an update at the May 2025 Lake Improvement Association member meeting.

The fish hatchery's Jessica Break offered a presentation about the fish hatchery at the May 2025 Lake Improvement Association member meeting.

Mercer County Historical Society Director Cait Clark gave a presentation on Grand Lake's oil history at the April 2025 Lake Improvement Association meeting.

Wright State University Lake-Campus Biology Professor Dr. Stephen Jacquemin provided a water quality update at the April 2025 Lake Improvement Association member meeting.

A recent study published in the Wetlands science journal examined the long-term impact of the Coldwater Creek Restored Wetland on water quality within the Grand Lake St. Marys watershed.

Write to your senator to oppose H2Ohio budget cuts that could impact Grand Lake's water quality.

The Lake Improvement Association recently donated $500 to sponsor this year’s Grand Lake Crappie series. We support events like this

The Governor’s Cup Regatta will be back on Grand Lake this June 21 and 22! The Lake Improvement Association recently