13,500 acres · Reservoir
Grand Lake St. Marys
An illustrative public record for Grand Lake St. Marys, with source review and measurements still being compiled.
View Grand Lake St. Marys recordLake Atlas · Ohio
Ohio Lake Water Quality Records
Lake Atlas is compiling public water quality records for Ohio lakes. Each record keeps measurements connected to their dates and named public sources, while missing information remains visible.
Public publishers: Ohio EPA
Published records
Ohio lakes with a public record
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