News

ODNR Releases 2026 Dredge Plan
03/03/2026

The Ohio Department of Natural Resources has released its 2026 dredging plan for Grand Lake St. Marys.For the first time in six years, the dredge crew is fully staffed. Two new crew members will be trained as dredge operators, which will require some training time, but a fully staffed program is pos

Seeing Fish Frozen in the Ice? Here’s Why
02/24/2026

Learn why gizzard shad are frozen in the ice on Grand Lake this winter.We asked Wright State University-Lake Campus biology professor Dr. Stephen Jacquemin why we’re seeing so many fish frozen in the ice at Grand Lake. Here’s what he said (thank you, Dr. Jacquemin!).Winter Mortality of Gizzard ShadD

Grand Lake Microcystin Levels: A Decade of Progress
02/09/2026

This graphic compares one of Grand Lake’s worst years for microcystin levels (2015) with the most recent full year of data (2025), demonstrating the progress made over the past decade.This didn’t happen by accident. It reflects a sustained, coordinated effort by many individuals, organizations, and

2025 Wetland Performance Report (Video & PDF)
02/09/2026

Wright State University Lake Campus Biology Professor Dr. Stephen Jacquemin gave an update on 2025 wetland performance in the Grand Lake St. Marys watershed at the February 2026 Lake Improvement Association meeting.Highlights760 million gallons treated in 2025 (compared to 620 million in 2024 and 44