Jo-Mary Lakes

Upper Jo-Mary Lake
Coordinates	45°36′N 68°58′W / 45.600°N 68.967°W / 45.600; -68.967^[1]

Max. length	3 mi (4.8 km)^[2]
Max. width	1.5 mi (2.4 km)^[2]
Surface area	1,847 acres (747 ha)^[3]
Max. depth	72 feet (22 m)^[4]
Water volume	58,496 acre·ft (72,154,000 m³)^[3]
Surface elevation	525 ft (160 m)^[1]

Middle Jo-Mary Lake
Coordinates	45°39′N 68°57′W / 45.650°N 68.950°W / 45.650; -68.950^[5]

Max. length	2 mi (3.2 km)^[2]
Max. width	1.3 mi (2.1 km)^[2]
Surface area	1,147 acres (464 ha)^[3]
Max. depth	18 feet (5.5 m)^[6]
Water volume	6,973 acre·ft (8,601,000 m³)^[3]
Surface elevation	494 ft (151 m)^[2]

Lower Jo-Mary Lake
Coordinates	45°41′N 69°00′W / 45.683°N 69.000°W / 45.683; -69.000^[7]

Max. length	4.5 mi (7.2 km)^[2]
Max. width	1 mi (1.6 km)^[2]
Surface area	1,889 acres (764 ha)^[3]
Max. depth	64 ft (20 m)^[8]
Water volume	35,584 acre·ft (43,892,000 m³)^[3]
Surface elevation	493 ft (150 m)^[2]

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.

Upper Jo-Mary Lake

The upper lake has approximately the same surface area as the lower lake, but holds a larger volume of water. Johnston Brook drains Johnston Pond and Jo-Mary Pond into the west side of the lake; and Duck Brook drains Duck Pond into the north end of the lake. Upper Jo-Mary Stream drains from the eastern side of the upper lake into Turkey Tail Lake 1 mile (1.6 km) to the northeast.^[2] The upper lake has a native population of lake trout, and has been stocked with brook trout and land-locked Atlantic salmon. Rainbow smelt and white perch have been introduced to the lake.^[4]

Middle Jo-Mary Lake

The middle lake is the smallest of the three, although connected with Turkey Tail Lake to the southeast at the same level through two narrow necks on either side of a large island. Upper Jo-Mary Stream flows from the upper lake into Turkey Tail Lake. The northern end of the middle lake flows through a narrow neck into the southeastern corner of the lower lake at the same level.^[2] The shallow water of the middle lake becomes too warm for trout during the summer months, but the lake supports a population of chain pickerel and white perch.^[6]

Lower Jo-Mary Lake

In addition to dranage from the upper and middle lakes to the south, the lower lake receives drainage from the west through the Cooper Brook Deadwater. Leavitt Pond, Henderson Pond, and Mud Pond drain to the deadwater through Mud Brook; while Rocky Pond, Crawford Pond, Church Pond, and Cooper Pond drain through Cooper Brook. The Appalachian Trail follows Cooper Brook from Crawford Pond to the deadwater and thence follows the shoreline along the western end of the lower lake. The northeast corner of the lower lake overflows into the south side of Pemadumcook Lake only a few hundred yards (or metres) to the north.^[2] Native populations of lake trout, brook trout, and land-locked Atlantic salmon receive comparatively light angling pressure because there is no motor vehicle road to the lower lake.^[8]

Sources

1 2 U.S. Geological Survey Geographic Names Information System: Upper Jo-Mary Lake
1 2 3 4 5 6 7 8 9 10 11 The Maine Atlas and Gazeteer (Thirteenth ed.). Freeport, Maine: DeLorme Mapping Company. 1988. p. 42. ISBN 0-89933-035-5.
1 2 3 4 5 6 Maine Depts. of Environmental Protection and Inland Fisheries & Wildlife (2005-08-04). "Maine Lakes: Morphometry and Geographic Information". Senator George J. Mitchell Center for Environmental and Watershed Research, The University of Maine. Retrieved 2008-07-31.
1 2 "Upper Jo-Mary Lake" (PDF). Maine Department of Inland Fisheries and Wildlife. State of Maine. Retrieved 15 May 2016.
↑ U.S. Geological Survey Geographic Names Information System: Middle Jo-Mary Lake
1 2 "Middle Jo-Mary and Turkeytail Lakes" (PDF). Maine Department of Inland Fisheries and Wildlife. State of Maine. Retrieved 15 May 2016.
↑ U.S. Geological Survey Geographic Names Information System: Lower Jo-Mary Lake
1 2 "Lower Jo-Mary Lake" (PDF). Maine Department of Inland Fisheries and Wildlife. State of Maine. Retrieved 15 May 2016.

Penobscot River Watershed

Tributaries	Dead River East Branch Mattawamkeag River East Branch Penobscot River East Branch Piscataquis River East Branch Pleasant River Kenduskeag Stream Little Seboeis River Mattawamkeag River Middle Branch Pleasant River Molunkus Stream Narramissic River North Branch Marsh River North Branch Penobscot River Orland River Passadumkeag River Piscataquis River Pleasant River Sebec River Seboeis River South Branch Marsh River South Branch Penobscot River Stillwater River West Branch Mattawamkeag River West Branch Penobscot River West Branch Piscataquis River West Branch Pleasant River

Lakes	Allagash Lake Canada Falls Lake Caucomgomoc Lake Chamberlain Lake Chesuncook Lake Cold Stream Pond Debsconeag Lakes Grand Lake Seboeis Jo-Mary Lakes Lobster Lake Lower Wilson Pond Matagamon Lake Mattawamkeag Lake Millinocket Lake Nahmakanta Lake Nicatous Lake Lake Onawa Pemadumcook Chain of Lakes Pleasant Lake Pushaw Lake Ragged Lake Rainbow Lake Schoodic Lake Sebec Lake Seboeis Lake Seboomook Lake South Twin Lake Telos Lake Toddy Pond Upper Wilson Pond

Towns	Abbot Bangor Bradley Brewer Brooks Brownville Bucksport Burlington Carmel Charleston Danforth Dover-Foxcroft East Millinocket Eddington Enfield Frankfort Guilford Hampden Haynesville Hermon Howland Hudson Island Falls Kenduskeag Kingman Lee Levant Lincoln Macwahoc Mattawamkeag Medway Milford Millinocket Milo Monson Oakfield Old Town Orland Orono Orrington Passadumkeag Patten Prospect Sangerville Sherman Smyrna Springfield Veazie Verona Winn Winterport Wytopitlock

Landmarks	Bangor and Aroostook Railroad Baxter State Park Fort Knox Gero Island Great Northern Paper Company Great Works Dam Hundred-Mile Wilderness Katahdin Iron Works Maine Central Railroad Monson Railroad Mount Katahdin North Maine Woods Orono Dam Peaks-Kenny State Park Penobscot Indian Island Reservation Penobscot Narrows Bridge and Observatory Ripogenus Gorge Stillwater Dam University of Maine Veazie Dam Waldo–Hancock Bridge

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