The Cullen Chain of Lakes consists of Upper, Middle and Lower Cullen lakes. Together, they total about 1,400 acres. 

Lower Cullen is located just to the north and east of Nisswa. It is 560 acres. About 180 acres of the lake are 15 feet deep or less. It has a maximum depth of 39 feet and features 3.86 miles of shoreline. A channel on the north end of the lake connects to Middle Cullen. An outflow channel on the south connects to Nisswa Lake. The lake holds crappie, bluegill, bass, northern pike and other fish species common in Crow Wing County. A public access is located on the southeast side of the lake. 

Middle Cullen is located to the north of Lower Cullen. It is 397 acres. About 127 acres of the lake are 15 deep or less. The lake has a maximum depth of 48 feet and 5.73 miles of shoreline. A channel at the southwest end of the lake empties into Lower Cullen. A channel on north end of the lake leads to Upper Cullen. The lake holds crappie, bluegill, bass, northern pike and other fish species common in Crow Wing County. A public access is located on the northeast side of the lake. 

Upper Cullen is the northern-most lake in the chain. It is 434 acres. About 300 acres of the lake are 15 feet deep or less. The lake has a maximum depth of 40 feet and 4.83 miles of shoreline. A small creek flows into the north shoreline of Upper Cullen. Water flows out of Upper Cullen via a culvert into Middle Cullen. The lake holds crappie, bluegill, bass, northern pike and other fish species common in Crow Wing County. The lake does not have a public access, but boats can be launched at Upper Cullen Resort for a fee.