South Twin Lake having about is wholly within

Penobscot County, Maine Penobscot County is a county in the U.S. state of Maine, named for the Penobscot Nation on Wabanakik. As of the 2020 census, the population was 152,199. Its county seat is Bangor. The county was established on February 15, 1816, from part of ...

. It is about west of

Millinocket, Maine Millinocket is a town in Penobscot County, Maine, United States. The population was 4,114 at the 2020 census. Millinocket's economy has historically been centered on forest products and recreation, but the paper company closed in 2008. History ...

and is part of the Pemadumcook Chain of Lakes. The lake is centered at and has spillway elevation above sea level. It is part of the watershed of the

West Branch West Branch may refer to: Communities * West Branch, Iowa, city in Cedar and Johnson counties * West Branch, Michigan, city in Ogemaw County * West Branch, New Brunswick, in the Local Service District of Weldford Parish * West Branch River John, i ...

of the Penobscot River. There is a State-sponsored boat access ramp in Partridge Cove off

Maine State Route 11 State Route 11 (SR 11) is a state highway in the U.S. state of Maine. It is a major interregional route which runs nearly the entire length of the state from south to north. The southern terminus of SR 11 is at the New Hampshire state line i ...

at . Parallel to the east side of the lake is Route 11 and the tracks of the

Montreal, Maine and Atlantic Railway The Montreal, Maine and Atlantic Railway was a Class II freight railroad that operated in the U.S. states of Maine and Vermont and the Canadian province of Quebec between 2002 and 2014. It was headquartered in Hermon, Maine. Its Canadian subsid ...

. The north south extent of the lake is about at the east end due to the extent of Partridge Cove at the southeast corner of the lake and the same at the west end due to Lincoln Cove at the northwest end. The average width of the lake appears to be roughly north to south and about long in a WNW direction. A gravel-surfaced road called Turkey Tail services the south side camps and connects to Route 11 at Partridge Cove. The lake has several rocks which are navigation hazards and in the spring of the year, one should be on the lookout for drifting logs. Ice has gone out as soon as April 13, but usually goes out around May 1. The lake is surrounded by second growth forests consisting of hemlock,

red spruce ''Picea rubens'', commonly known as red spruce, is a species of spruce native to eastern North America, ranging from eastern Quebec and Nova Scotia, west to the Adirondack Mountains and south through New England along the Appalachians to western ...

balsam fir ''Abies balsamea'' or balsam fir is a North American fir, native to most of eastern and central Canada (Newfoundland west to central Alberta) and the northeastern United States (Minnesota east to Maine, and south in the Appalachian Mountains to ...

and scattered white pines. The broad-leaf component of the forest is

aspen Aspen is a common name for certain tree species; some, but not all, are classified by botanists in the section ''Populus'', of the '' Populus'' genus. Species These species are called aspens: *'' Populus adenopoda'' – Chinese aspen (Chin ...

white White is the lightest color and is achromatic (having no hue). It is the color of objects such as snow, chalk, and milk, and is the opposite of black. White objects fully reflect and scatter all the visible wavelengths of light. White o ...

and

yellow birch ''Betula alleghaniensis'', the yellow birch, golden birch, or swamp birch, is a large tree and an important lumber species of birch native to northeastern North America. Its vernacular names refer to the golden color of the tree's bark. In the pa ...

red oak The genus ''Quercus'' contains about 500 species, some of which are listed here. The genus, as is the case with many large genera, is divided into subgenera and sections. Traditionally, the genus ''Quercus'' was divided into the two subgenera ''C ...

red Red is the color at the long wavelength end of the visible spectrum of light, next to orange and opposite violet. It has a dominant wavelength of approximately 625–740 nanometres. It is a primary color in the RGB color model and a secondar ...

and

sugar maple ''Acer saccharum'', the sugar maple, is a species of flowering plant in the soapberry and lychee family Sapindaceae. It is native to the hardwood forests of eastern Canada and eastern United States. Sugar maple is best known for being the prim ...

, and black ash. Tributaries include Lincoln Brook at the northwest end, and east and west Ragged Brooks coming in from the south. Fish include

yellow Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In the ...

and

white perch The white perch (''Morone americana'') is not a true perch but is a fish of the temperate bass family, Moronidae, notable as a food and game fish in eastern North America. In some places it is referred to as "Silver Bass". The name "White per ...

, atlantic salmon, brook trout,

eel Eels are ray-finned fish belonging to the order Anguilliformes (), which consists of eight suborders, 19 families, 111 genera, and about 800 species. Eels undergo considerable development from the early larval stage to the eventual adult stage ...

chain pickerel The chain pickerel (''Esox niger'') is a species of freshwater fish in the pike family (family Esocidae) of order Esociformes. The chain pickerel and the American pickerel (''E. americanus'') belong to the ''Esox'' genus of pike. Taxonomy Fren ...

hornpout The brown bullhead (''Ameiurus nebulosus'') is a fish of the family Ictaluridae that is widely distributed in North America. It is a species of bullhead catfish and is similar to the black bullhead (''Ameiurus melas'') and yellow bullhead (''A ...

, whitefish,

chubs Chub is a common fish name. It pertains to any one of a number of ray-finned fish in several families and genera. In the UK, the term ''chub'' usually refers to the species ''Squalius cephalus''. In addition, see sea chub. In family Cyprinidae ...

. Henry David Thoreau passed this lake in the evening of Saturday, September 5, 1846 while paddling up North Twin Lake, but did not enter South Twin.

Islands and Reefs

Larger islands include Len's Island (Isle of Len) (Private) near the south shore just east of Ragged Brook and Peanut Island, having some large boulders in the northeast part of the lake. There is a reef of rocks extending north from Peanut Island to the Rock Pile which is on the northern boundary of South Twin Lake.

History

The history is primarily that of the North Twin Dam. Thoreau mentions that there is an abundance of large white pine around South Twin. In 1836 and 1839, the Maine legislature passed acts whereby dams could be built at Chesuncook and North Twin Lake. Apparently the North Twin dam was not built in 1839 but by 1846 the dam had a head. This was raised to in 1867. The present dam was established by the

Great Northern Paper Company Great Northern Paper Company was a Maine-based pulp and paper manufacturer that at its peak in the 1970s and 1980s operated mills in Arkansas, Georgia, Maine, and Wisconsin and produced 16.4% of the newsprint made in the United States. It was also ...

in 1903–04 and was built by J.B. Mullen.

Citations

External links

Describes the boat ramp and islands
*
Describes the lake fish and a map
( PDF) {{authority control Reservoirs in Maine Lakes of Penobscot County, Maine North Maine Woods Penobscot River