Jo-Mary Lakes
| Upper Jo-Mary Lake | |
|---|---|
Upper Jo-Mary Lake Upper Jo-Mary Lake | |
| Coordinates | 45°36′N 68°58′W / 45.600°N 68.967°W |
| Max. length | 3 mi (4.8 km) |
| Max. width | 1.5 mi (2.4 km) |
| Surface area | 1,847 acres (747 ha) |
| Max. depth | 72 feet (22 m) |
| Water volume | 58,496 acre⋅ft (72,154,000 m3) |
| Surface elevation | 525 ft (160 m) |
| Middle Jo-Mary Lake | |
|---|---|
Middle Jo-Mary Lake Middle Jo-Mary Lake | |
| Coordinates | 45°39′N 68°57′W / 45.650°N 68.950°W |
| Max. length | 2 mi (3.2 km) |
| Max. width | 1.3 mi (2.1 km) |
| Surface area | 1,147 acres (464 ha) |
| Max. depth | 18 feet (5.5 m) |
| Water volume | 6,973 acre⋅ft (8,601,000 m3) |
| Surface elevation | 494 ft (151 m) |
| Lower Jo-Mary Lake | |
|---|---|
Lower Jo-Mary Lake Lower Jo-Mary Lake | |
| Coordinates | 45°41′N 69°00′W / 45.683°N 69.000°W |
| Max. length | 4.5 mi (7.2 km) |
| Max. width | 1 mi (1.6 km) |
| Surface area | 1,889 acres (764 ha) |
| Max. depth | 64 ft (20 m) |
| Water volume | 35,584 acre⋅ft (43,892,000 m3) |
| Surface elevation | 493 ft (150 m) |
A chain of three Jo-Mary Lakes along the border of Penobscot County and Piscataquis County drain into the Pemadumcook Chain of Lakes in the North Maine Woods. The flow sequence is from Upper Jo-Mary Lake into Middle Jo-Mary Lake and then through Lower Jo-Mary Lake into Pemadumcook Lake.