Lake Onawa
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The Sebec River is a
tributary A tributary, or affluent, is a stream or river that flows into a larger stream or main stem (or parent) river or a lake. A tributary does not flow directly into a sea or ocean. Tributaries and the main stem river drain the surrounding drainage ...
of the
Piscataquis River The Piscataquis River is a major tributary of the Penobscot River, found in Piscataquis County, Maine, United States. It starts from the confluence of its East Branch and West Branch () in Blanchard. The river flows in a mostly eastern direction ...
in
Piscataquis County Piscataquis County is a county located in the U.S. state of Maine. As of the 2020 census, its population was 16,800, making it Maine's least-populous county. Its county seat is Dover-Foxcroft. The county was incorporated on March 23, 1838, ta ...
,
Maine Maine () is a state in the New England and Northeastern regions of the United States. It borders New Hampshire to the west, the Gulf of Maine to the southeast, and the Canadian provinces of New Brunswick and Quebec to the northeast and north ...
. From the outflow of Sebec Lake () in Sebec, the river runs U.S. Geological Survey. National Hydrography Dataset high-resolution flowline data
The National Map
accessed June 22, 2011
east and southeast to its
confluence In geography, a confluence (also: ''conflux'') occurs where two or more flowing bodies of water join to form a single channel. A confluence can occur in several configurations: at the point where a tributary joins a larger river (main stem); o ...
with the Piscataquis in Milo.


Sebec Lake

Sebec Lake extends westward from its overflow into Sebec River in the northern part of Sebec. The lake extends through the northeast corner of
Dover-Foxcroft Dover-Foxcroft is the largest town in and the seat of Piscataquis County, Maine, United States. The population was 4,422 at the 2020 census. The town is located near the geographic center of the state. History Dover-Foxcroft was originally tw ...
and covers the southwest corner of Bowerbank Township and the southeast corner of Willimantic. Minor south shore tributaries include Bog Brook and Cotton Brook in Dover-Foxcroft, and Smith Brook, Bennett Brook, Ayer Brook, and Badger Brook in Sebec. Minor north shore tributaries include Mill Brook and Grapevine Stream in Bowerbank Township and the larger Bear Brook flowing from Barnard Township. The largest tributaries are Wilson Stream and Ship Pond Stream flowing into the northwest corner of the lake in Willimantic.


Wilson Ponds

Wilson Stream originates in Upper Wilson Pond on the western edge of Bowdoin College Grant West. Tributaries North Brook and South Brook flow into the eastern end of Upper Wilson Pond from Mountain Pond and Horseshoe Pond, respectively. The western end of Upper Wilson Pond overflows into the eastern end of Lower Wilson Pond. Lower Wilson Pond is in the eastern part of Greenville. The southern end of Lower Wilson Pond overflows into Wilson Stream. Wilson Stream flows south into Sebec Lake. The Appalachian Trail crosses Wilson Stream approximately south of Lower Wilson Pond. Little Wilson Stream flows 8.6 miles east from Shirley to join Wilson Stream approximately downstream of the Appalachian Trail crossing. Big Wilson Cliffs and Little Wilson Falls and Gorge are scenic highlights along the Appalachian Trail.


Lake Onawa

Lake Onawa (or Ship Pond) is in the southeastern corner of Elliotville Township. Long Pond Stream flows south from the west end of Long Pond to reach the north end of Lake Onawa. The south end of Lake Onawa overflows into Ship Pond Stream which flows south into Sebec Lake. The International Railway of Maine was built along the south shore of Lake Onawa in 1887. One of the highest bridges on the railroad was Ship Pond Viaduct across Ship Pond Stream. The viaduct is long and passes above Ship Pond Stream.


See also

*
List of rivers of Maine A ''list'' is any set of items in a row. List or lists may also refer to: People * List (surname) Organizations * List College, an undergraduate division of the Jewish Theological Seminary of America * SC Germania List, German rugby union ...


References

*
Maine Streamflow Data from the USGSMaine Watershed Data From Environmental Protection Agency
Tributaries of the Penobscot River Rivers of Piscataquis County, Maine Rivers of Maine {{Maine-river-stub