Sanford Lake is a man-made reservoir located in Midland County, Michigan. It was formed by the damming of the Tittabawassee River near the town of Sanford, Michigan. The dam is owned and operated by Boyce Hydro,LLC. The main body of the lake stretches for about 6 miles (9.7 km) north of the dam, but the water remains deep enough for small boat navigation up past the town of Edenville, Michigan ten miles (16 km) north of the dam.
The lake is slightly over half a mile wide at its widest point. A survey by the Michigan DNR measured the main body of the lake at 1,250 acres (5.1 km2). According to the Sanford Lake Improvement Board website maintained by Midland County, the lake has a surface area of 1,499 acres (6.07 km2) and a shoreline length of 34.5 miles (55.5 km).