Question: What was Clyde River a part of that extends from Old Forge in the Adirondacks of New York to Fort Kent, Maine?

Context paragraphs:
Franklin Falls Pond: Franklin Falls Pond is a 439 acre , 2.7 mi long pond created by damming the Saranac River three miles (5 km) northeast of Lower Saranac Lake in the Adirondack Mountains of northern New York State.  The pond is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, NY and ends in Fort Kent, ME.

Old Forge Pond: Old Forge Pond is located by Old Forge, New York.  Fish species present in the lake are white sucker, black bullhead, rainbow trout, yellow perch, and rock bass.  Carry down off NY-28 in Old Forge.

Northern Forest Canoe Trail: The Northern Forest Canoe Trail (NFCT) is a 740 mi marked canoeing trail in the northeastern United States and Canada, extending from Old Forge in the Adirondacks of New York to Fort Kent, Maine.  Along the way, the trail also passes through the states and provinces of Vermont, Quebec, and New Hampshire.  The trail was opened on June 3, 2006.

Clyde River (Vermont): The Clyde River is a tributary of Lake Memphremagog, over 33.5 mi long, in northern Vermont in the United States.  It is the easternmost of the four major rivers in Orleans County.  It is the most powerful of the four within Orleans County, powering several turbines at damsites.  It is part of the Northern Forest Canoe Trail.

Lower Saranac Lake: Lower Saranac Lake is one of three connected lakes, part of the Saranac River, near the village of Saranac Lake in the Adirondacks in northern New York.  With Middle Saranac Lake and Upper Saranac Lake, a 17 mi paddle with only one portage is possible.  The Saranac Lake Islands Public Campground provides 87 campsites on inlands in Lower and Middle Saranac Lake.  In addition to the Saranac River, it is fed by nearby Lake Colby, Fish Creek, and Lilly Pad Pond.  Lower Saranac Lake is located in the town of Harrietstown, New York.  The lake, along with both Upper and Middle Saranac Lakes, is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, NY and ends in Fort Kent, ME.

Fort Kent, Maine: Fort Kent is a town in Aroostook County, Maine, United States.  The population was 4,097 in the 2010 census.  Fort Kent is home to an Olympic biathlete training center, an annual CAN-AM dogsled race, and the Fort Kent Blockhouse, built in reaction to the Aroostook War and in modern times designated a national historic site.  Principal industries include agriculture (particularly potatoes and forestry) and textiles.  Fort Kent is the northern terminus of U.S. 1 and the ending point of the Northern Forest Canoe Trail.  Fort Kent signed a lease agreement with the Fish River Flying Club on July 8, 2011 to repair, maintain, and operate the local municipal airport, which had been closed since the 1980s.

Fulton Chain of Lakes: The Fulton Chain of Lakes is a string of eight lakes located in the Adirondack Park in upstate New York, United States.  The chain is the dammed-up Moose River, and the dam which creates the chain holds back nearly 6.8 e9USgal of water.  The lakes are located in Herkimer and Hamilton Counties.  Inlet, Old Forge, and Eagle Bay are towns on them.  The chain begins near Old Forge and ends before it reaches Raquette Lake.  The lakes are named for Robert Fulton, inventor of the steamboat, who proposed connecting the lakes to create an Adirondack canal.  They are suitable for pontoon boats (the most popular type in the area), kayaks, and motorboats.  The chain is part of the 740 mi Northern Forest Canoe Trail, which begins on First Lake and ends in Fort Kent, Maine.

Fulton Chain Railway: The Fulton Chain Railway was incorporated as the Fulton Chain "Railroad" in 1896, and opened that year.  After reorganization in 1902, the company, then operated by the New York Central Railroad, was renamed the Fulton Chain "Railway".  The line, also known as the Old Forge Branch, was 2.204 mi long, and connected Fulton Chain to Old Forge, where Fulton Navigation Company ships made connections.  The New York Central gained control of the company in 1917, and operated its line until July 11, 1932.  A short stub at the Fulton Chain end remained the property of the company until January 1, 1937, when the Fulton Chain Railway was merged into the New York Central.

Old Forge, New York: Old Forge is a hamlet (and census-designated place) on New York State Route 28 in the town of Webb in Herkimer County, New York.  The population was 756 at the 2010 census.  Old Forge was formerly a village that dissolved its incorporation in 1936, but it remains the principal community in the region.  As one of the western gateway communities of Adirondack Park, Old Forge forms an extensive business district, primarily directed at tourism especially during the summer months.  The local school is the Town of Webb UFSD, a K-12 institution with the Eskimo as their mascot.  Old Forge often records the lowest winter temperatures in New York.  On February 17, 1979, the record low temperature for New York was set in Old Forge at -52 °F (-46 °C).

Long Lake (New York): 4,077-acre Long Lake is a 14 mi lake in the town of Long Lake in Hamilton County, New York in the United States; the average width is half a mile.  It is part of the Raquette River, which flows in a straight, northeast-trending valley.  NY 30 crosses at a narrows 4 mi from the south end where the hamlet of Long Lake is located.  There are two public beaches and a state boat launch.  More than half of the shoreline is part of the New York State Forest preserve.  The northern end of the lake is undeveloped.  The lake is also part of the 740-mile Northern Forest Canoe Trail, which begins in Old Forge, NY and ends in Fort Kent, ME.

Supporting paragraphs: Clyde River (Vermont) Northern Forest Canoe Trail
Answer: The Northern Forest Canoe Trail