The Grindstone Lake Association is a dedicated group of neighbors on a mission to inform and protect this Minnesota natural resource for generations to come.
Grindstone Lake is a large freshwater lake located in Dell Grove Township, Pine County, in east central Minnesota approximately 6.5 miles (10.5 km) west of Sandstone, Minnesota. The lake is roughly oval shaped being approximately 2 miles (3.2 km) in length north to south and 0.5 miles (0.80 km) east to west, and a maximum depth of 153 feet (47 m). The lake has several small streams that drain the area wetlands and is considered the headwater for the Grindstone River. The lake’s name is a translation from the Ojibwe zhiigwanaabikokaa-zaaga’igan (Lake abundant with grind stones).