South Twin Lake
Discover the natural beauty and characteristics of this significant body of water within Maine's Penobscot County.
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Overview
A Natural Water Body
South Twin Lake is a natural lake situated entirely within Penobscot County, Maine. It is a key component of the Pemadumcook Chain of Lakes, contributing significantly to the region's hydrological landscape.
Geographic Context
Located approximately 6 miles (10 km) west of Millinocket, Maine, South Twin Lake serves as a vital part of the watershed system feeding into the West Branch of the Penobscot River. Its position is centered around the coordinates 45°37′N 68°51′W.
Hydrological Significance
With a spillway elevation of 492 feet (150 m) above sea level, the lake plays a role in regulating water flow within its drainage basin. Its connection to the larger Penobscot River system underscores its ecological and potentially economic importance.
Location Details
County and Region
South Twin Lake is geographically situated within Penobscot County, Maine. This county is known for its vast forests and numerous lakes, making South Twin Lake a representative feature of the area's natural heritage.
Coordinates and Elevation
The lake's central coordinates are approximately 45°37′N 68°51′W. Its surface elevation is maintained at 492 feet (150 meters) above sea level, a critical factor for its hydrological function.
Watershed Connection
As part of the Pemadumcook Chain of Lakes, South Twin Lake is integral to the watershed of the West Branch of the Penobscot River. This interconnectedness highlights the lake's role in the broader regional ecosystem.
Lake Characteristics
Size and Shape
South Twin Lake spans a considerable area, covering approximately 3,200 acres (13 km²). Its dimensions are notable: a maximum length of about 4 miles (6 km) and a maximum width of roughly 1.25 miles (2 km). The lake's shape is irregular, with significant coves like Partridge Cove and Lincoln Cove extending its shoreline.
Depth and Shoreline
The lake features an average depth of 30 feet (9 m), with a maximum depth reaching 55 feet (17 m). Its shoreline, while not precisely defined due to its irregular nature, measures approximately 14 miles (20 km).
Water Conditions
Ice typically recedes from the lake around May 1st, though it has been observed to go out as early as April 13th. This seasonal cycle is characteristic of northern freshwater bodies.
Flora and Fauna
Surrounding Forests
The lake is encircled by mature, second-growth forests. Dominant coniferous species include hemlock, red spruce, and balsam fir, interspersed with scattered white pines. The deciduous component features aspen, white and yellow birch, red oak, red and sugar maple, and black ash, creating a rich biodiversity.
Aquatic Life
South Twin Lake supports a diverse fish population, making it a notable habitat for anglers. Common species found include:
- Yellow Perch
- White Perch
- Atlantic Salmon
- Brook Trout
- Eels
- Chain Pickerel
- Hornpout (Bullhead)
- Whitefish
- Chubs
Access and Navigation
Road Access
Public access is facilitated via a State-sponsored boat ramp located in Partridge Cove, accessible from Maine State Route 11. A gravel road, known as Turkey Tail, services camps along the south side and connects to Route 11.
Proximity to Infrastructure
Route 11 runs parallel to the eastern side of the lake. Additionally, the tracks of the Montreal, Maine and Atlantic Railway are situated alongside the eastern shore, indicating the area's historical transportation routes.
Navigation Hazards
Boaters should exercise caution due to the presence of submerged rocks, which pose navigation hazards. In the spring, drifting logs can also present a risk to watercraft. Awareness and careful navigation are advised.
Historical Context
Thoreau's Observation
The renowned naturalist Henry David Thoreau passed by South Twin Lake on the evening of Saturday, September 5, 1846, while journeying up North Twin Lake. Although he did not enter South Twin Lake itself, his presence highlights the lake's significance as part of the wilderness routes explored in the 19th century.
Dam Construction
The history of South Twin Lake is closely tied to the development of dams within the Pemadumcook Chain. Legislation in 1836 and 1839 allowed for dams at Chesuncook and North Twin Lake. By 1846, the North Twin dam had a 12-foot (3.7 m) head, which was later raised to 16 feet (4.9 m) in 1867. The current dam structure was established by the Great Northern Paper Company between 1903 and 1904, constructed by J.B. Mullen.
Notable Features
Islands
South Twin Lake contains several islands. Notable among them are Len's Island (Isle of Len), a private island located near the south shore east of Ragged Brook, and Peanut Island, situated in the northeast part of the lake.
Reefs and Boulders
The lakebed features navigational hazards, including a reef of rocks extending north from Peanut Island towards the "Rock Pile," which marks the northern boundary of South Twin Lake. These features require careful attention from boaters.
Tributaries
Waterways Feeding the Lake
Several streams contribute water to South Twin Lake, feeding into its various coves and shores. Key tributaries include:
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References
References
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Disclaimer
Important Notice
This page has been generated by an Artificial Intelligence and is intended for informational and educational purposes only. The content is derived from publicly available data and may not be exhaustive or entirely up-to-date. While efforts have been made to ensure accuracy based on the source material, users should consult official sources for critical decisions.
This is not official navigational or safety advice. Information regarding water depth, hazards, or access points is provided for general understanding. Always exercise caution and consult official charts, local authorities, and safety guidelines before engaging in activities on or around South Twin Lake. The creators are not responsible for any errors, omissions, or actions taken based on the information provided.