1981 Map of Black Oak Lake

About this map

Ottawa National Forest spans the border between Michigan and Wisconsin, blanketing a dense lake district defined by glacier-carved basins and winding forest roads. This 1981 edition captures the complex hydrography of the region, where countless named water bodies like Whitefish Lake, Katherine Lake, and Loon Lake are separated by narrow ridges and marshy lowlands. Human development is concentrated around the southern edge near Land O' Lakes, where the Oak Hill Cem and local infrastructure like the Fish Hatchery and Gravel Pit appear alongside recreational camps. The map documents a landscape balanced between heavy conservation and seasonal tourism, evidenced by the numerous campgrounds and boat ramps tucked away in areas like Sylvania. Interesting hydrological features like Johnston Springs and a series of sewage disposal ponds reflect the intersection of the natural water table with the needs of the local settlements and the forest service.