Question: Bigelow Preserve is home to the lake in what counties in Maine?

Context paragraphs:
Henry Bigelow House: The Henry Bigelow House is a historic house at 15 Bigelow Terrace in the Newton Corner village of Newton, Massachusetts.  Built about 1830, it is a good local example of Greek Revival architecture, important as home to Henry Bigelow, a prominent local educator and philanthropist.  On September 4, 1986, it was added to the National Register of Historic Places.

Flagstaff Lake (Maine): Flagstaff Lake is located in Somerset County and Franklin County, Maine in the United States.  The North Branch Dead River and South Branch Dead River join in the lake, forming the Dead River.

Bull Run Mountains Natural Area Preserve: Bull Run Mountains Natural Area Preserve is a 2486 acre Natural Area Preserve located along the Bull Run Mountains in Fauquier and Prince William counties, Virginia.  Dedicated in 2002, the majority of the preserve is owned by the Virginia Outdoors Foundation.  It harbors a number of outstanding natural community types, some of which are rare in the Commonwealth.  There are also quartzite cliffs and boulder fields around High Point Mountain within the preserve's boundaries.

Texas City Prairie Preserve: The Texas City Prairie Preserve is a 2300 acre nature preserve located on the shores of Moses Lake and Galveston Bay in Texas City, Texas in the United States, near Houston.  The preserve was created in 1995 by the Nature Conservancy thanks to a $2.2 million donation of land by ExxonMobil.  The primary goal in creating the preserve was to save the endangered Attwater's Prairie Chicken species, though the preserve supports a wide variety of wildlife.

Mount Bigelow (Maine): Mount Bigelow (also called the Bigelow Range and Bigelow Mountain) is a long mountain ridge with several summits.  It is located in Franklin County and Somerset County, Maine.  It is one of Maine's highest summits.  The mountain is named after Major Timothy Bigelow who climbed the rugged summit in late October 1775 "for the purpose of observation."  Major Bigelow was one of Colonel Benedict Arnold's four division commanders during the 1775 Invasion of Canada.  The expeditionary force passed along the Dead River on the northern edge of the Bigelow Range, now dammed into Flagstaff Lake.

Sharp Mountain Preserve, Georgia: The Preserve at Sharp Mountain (also called The Sharp Mountain Preserve) is a nature-based community located near Jasper, Georgia in Pickens County.  It is one of three mountain communities in Pickens County, and the only one dedicated to maintaining its natural amenities.  There are 12 mi of paved roads running through the community, but the population density is intentionally low (approximately 300 lots over 1600 acre ranging in size from a minimum of 3 acre to a maximum of 37 acres.)  The Preserve at Sharp Mountain was named the "Best Community for Outdoor Lovers" by Pinnacle Living magazine, Unlike many planned communities, the Preserve at Sharp Mountain does not have swimming pools and tennis courts with club houses or golf courses.  Instead, the Preserve at Sharp Mountain offers many acres of green space, hiking and nature trails, a nature pavilion, waterfalls, a bird sanctuary, a butterfly garden and various nature parks.  The community is gated to restrict use of its 12 mi of privately owned roads to those living in the community.  The Preserve at Sharp Mountain was developed by Four Seasons originally, which later became Naterra Land.  Naterra's stated goal in all of its projects is "to better connect people with nature."  Naterra Land sold out all of its inventory in the Preserve, and control of the community is now governed by a Property Owners' Association (POA).  In 2011, the Preserve Association switched from being an HOA (Home Owners' Association) to being a POA (Property Owners' Association), each being viewed differently under Georgia law.  In 2008 the Preserve became a recognized member of the national Firewise communities program and is one of the 13 in Georgia.

Deep Run Ponds Natural Area Preserve: Deep Run Ponds Natural Area Preserve is a 706 acre Natural Area Preserve in Rockingham County, Virginia.  The preserve contains one of the largest remaining systems of Shenandoah Valley sinkhole ponds in Virginia.  Such ponds are found in Rockingham and Augusta counties; their water levels fluctuate throughout the year.  The preserve's eight sinkhole ponds support a variety of rare plant and animal life; two ponds support the rare Virginia sneezeweed ("Helenium virginicum"), while others contain black-fruited spikerush ("Eleocharis melanocarpa"), northern St. John's-wort ("Hypericum boreale"), Buxbaum's sedge ("Carex buxbaumi"), and northern bog clubmoss ("Lycopodiella inundata").

American Fork Second Ward Meetinghouse: The American Fork Second Ward Meetinghouse is an eclectic Gothic Revival building on South Street in American Fork, Utah.  Built from 1903 to 1904, it served as Mormon meetinghouse until 1982.  It is believed that the building was designed by James H. Pulley, a local carpenter and builder.  A large addition built in 1929 was designed by architects Young and Hansen of Salt Lake City.  In 1984, the building was sold to Michael Bigelow.  It became the home of Bigelow & Co.  Organ Builders.  It was listed on the National Register of Historic Places in 1992.

Aniakchak National Monument and Preserve: Aniakchak National Monument and Preserve is a U.S. National Monument and National Preserve, consisting of the region around the Aniakchak volcano on the Aleutian Range of south-western Alaska.  The 601294 acre monument is one of the least-visited places in the National Park System due to its remote location and difficult weather.  The area was proclaimed a National Monument on December 1, 1978, and established as a National Monument and Preserve on December 2, 1980.  The National Monument encompasses 137,176 acres and the preserve 464,118 acre .  Visitation to Aniakchak is the lowest of all areas of the U.S. National Park System, according to the NPS, with only 134 documented recreational visits in 2014.  Most visitors fly into Surprise Lake inside Aniakchak Crater, but the frequent fog and other adverse weather conditions make landing in the lake difficult.  It is also possible to fly into the nearby village of Port Heiden and proceed overland to the Aniakchak Crater.

Bigelow Preserve: Bigelow Mountain Preserve is a 36000 acre state-owned nature preserve in the western part of the U.S. state of Maine.  Located in Stratton, Maine, the preserve was created in 1976 in order to stop a proposed development of a ski resort in the area.  It is home to Mount Bigelow, one of Maine's highest mountains at an elevation of 4145 ft , and Flagstaff Lake.

Supporting paragraphs: Bigelow Preserve Flagstaff Lake (Maine)
Answer: Somerset County and Franklin County,