Upper Sandusky Reservoir 1 is located in central Wyandot County on the southeastern edge of the city of Upper Sandusky. The main parking area and the boat ramp can be reached by taking Reservoir Road off of East Wyandot Avenue.

Upper Sandusky Reservoir 1 is an impoundment that was built in 1957 in order to provide water to the city of Upper Sandusky. Water is obtained primarily by pumping from the Sandusky River, which is located east of the reservoir. Upper Sandusky 2 is an upground reservoir; water is obtained by pumping from the Sandusky River, which is located about one mile west of the reservoir. The reservoir, designed to provide water to the city of Upper Sandusky, was completed and filled in 2002. Upper Sandusky Reservoirs are on the tributary to Sandusky River in Wyandot County, Ohio. Construction was completed in 1957. It has a normal surface area of 38 acres. It is owned by the City Of Upper Sandusky.

Upper Sandusky Reservoir Dam is of earthen construction. Its height is 31 feet with a length of 1600 feet. The maximum discharge is 1650 cubic feet per second. Its capacity is 850-acre-feet. Normal storage is 455-acre-feet. It drains an area of 1.51 square miles.