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The Connecticut Lakes are a group of lakes in Coos County, northern New Hampshire, United States, situated along the headwaters of the Connecticut River. They are accessed via the northernmost segment of U.S. Route 3, between the village of Pittsburg and the Canada port of entry south of Chartierville, Quebec. The lakes are located within the boundaries of Pittsburg, but are far from the town center. Connecticut Lakes State Forest adjoins them.

There are four lakes: First, Second, Third and Fourth Connecticut Lake, numerically running south to north. The lakes decrease in size and increase in elevation, sequentially from first to fourth. The fourth lake is the source of the Connecticut River. The first three lakes can be viewed and accessed from U.S. Route 3, while the only access to the fourth lake is via the Fourth Connecticut Lake Trail, which goes in and out of Canada. All lakes are north of the 45th parallel.

Lake Francis lies to the south of the four Connecticut Lakes. It is a man-made reservoir and the last of the major lakes along the Connecticut River in northern New Hampshire.

The lakes

First Connecticut Lake

First Connecticut Lake
First Connecticut Lake
Location	Coos County, New Hampshire
Coordinates	45°5′37″N 71°14′52″W / 45.09361°N 71.24778°W / 45.09361; -71.24778
Primary inflows	Connecticut River
Primary outflows	Connecticut River
Basin countries	United States
Max. length	5.3 mi (8.5 km)
Max. width	2.7 mi (4.3 km)
Surface area	3,071 acres (1,243 ha)
Average depth	56 ft (17 m)
Max. depth	163 ft (50 m)
Surface elevation	1,638 ft (499 m)
Settlements	Pittsburg

First Connecticut Lake is located in the town of Pittsburg, 7 miles (11 km) northeast of the village center. At 3,071 acres (1,243 ha), it is the eighth-largest lake located entirely in New Hampshire. It is the lowest in elevation and largest in surface area of the four Connecticut Lakes.

Fish species include landlocked salmon and lake trout. The lake has average and maximum depths of 56 feet (17 m) and 163 feet (50 m), respectively. There are three public boat launch locations, and ice fishing is permitted from January through March. Outflow of the lake into the Connecticut River is controlled via the First Lake Dam, located near U.S. Route 3 at the southwestern shore.

A marker along the southwestern shore of the lake commemorates Luther Parker, a historical figure of the Republic of Indian Stream in the 1830s.

Second Connecticut Lake

Second Connecticut Lake
Second Connecticut Lake
Location	Coos County, New Hampshire
Coordinates	45°9′23″N 71°10′14″W / 45.15639°N 71.17056°W / 45.15639; -71.17056
Primary inflows	Connecticut River
Primary outflows	Connecticut River
Basin countries	United States
Max. length	3.1 mi (5.0 km)
Max. width	1.3 mi (2.1 km)
Surface area	1,102 acres (4 km)
Average depth	20 ft (6.1 m)
Max. depth	63 ft (19 m)
Surface elevation	1,866 ft (569 m)
Islands	3
Settlements	Pittsburg

Second Connecticut Lake, known in the past as Lake Carmel, is a 1,102-acre (446 ha) water body in the town of Pittsburg, 15 miles (24 km) northeast of the village center. The second lake is 228 feet (69 m) higher in elevation than the first lake, and shallower.

Fish species include brook trout, landlocked salmon, and lake trout. There is one public boat launch location, and ice fishing is permitted from January through March. Outflow of the lake into the Connecticut River is controlled via the Second Lake Dam, located near U.S. Route 3 at the southwestern shore.

Third Connecticut Lake

Third Connecticut Lake
Third Connecticut Lake
Location	Coos County, New Hampshire
Coordinates	45°14′15″N 71°12′0″W / 45.23750°N 71.20000°W / 45.23750; -71.20000
Primary inflows	Connecticut River
Primary outflows	Connecticut River
Basin countries	United States
Max. length	1.1 mi (1.8 km)
Max. width	0.5 mi (0.80 km)
Surface area	231 acres (93 ha)
Average depth	42 ft (13 m)
Max. depth	101 ft (31 m)
Surface elevation	2,188 ft (667 m)
Settlements	Pittsburg

Third Connecticut Lake, at one time known as Lake St. Sophia, is a 231-acre (93 ha) water body in the town of Pittsburg, situated 20 miles (32 km) northeast of the village center, and less than 1 mile (1.6 km) south of the Canadian border. It reaches a maximum depth of approximately 100 feet (30 m), and sits 322 feet (98 m) higher in elevation than the second lake.

Fish species include rainbow trout and lake trout. There is one public boat launch location, off of U.S. Route 3 along the eastern shore of the lake. Ice fishing is permitted from January through March.

Fourth Connecticut Lake

Fourth Connecticut Lake
Fourth Connecticut Lake
Location	Coos County, New Hampshire
Coordinates	45°14′52″N 71°12′52″W / 45.24778°N 71.21444°W / 45.24778; -71.21444
Primary outflows	Connecticut River
Basin countries	United States
Max. length	0.1 miles (.16 km)
Surface area	1.8 acres (0.73 ha)
Surface elevation	2,670 ft (810 m)
Settlements	Pittsburg

Fourth Connecticut Lake is the northernmost and most remote of the Connecticut Lakes; it is also the smallest, at 1.8 acres (0.73 ha). It is the source of the Connecticut River, and is situated in the town of Pittsburg, 0.5 miles (0.80 km) upstream from and 482 feet (147 m) higher than Third Connecticut Lake. The fourth lake is immediately to the northwest of the third lake. The Fourth Connecticut Lake Trail leads hikers to the lake.

Fourth Connecticut Lake Trail

The Fourth Connecticut Lake Trail is a public trail maintained by The Nature Conservancy that criss-crosses the international border between New Hampshire and Quebec for 0.6 miles (0.97 km) ending with a 0.5-mile (0.80 km) loop around the Fourth Connecticut Lake. It is one of the few international trails in North America. The land surrounding the lake is owned by The Nature Conservancy.

The parking area for hikers is at the American facility of the Pittsburg–Chartierville Border Crossing, located 22 miles (35 km) north of the Pittsburg town center via U.S. Route 3. The trail begins about 50 yards (46 m) to the right of the American building, with a small kiosk at the trailhead.

The trail has no cell phone coverage, requires some non-technical climbing, and starts at a good elevation—hikers should be prepared, even in summer. Pets are not allowed on the trail, and no camping, hunting, or fishing is allowed.

For persons starting in the United States, passports are not needed to hike the trail as, even though parts of the trail are in Canada, the trail starts and ends on the American side of the international border. For persons starting in Canada, a passport or other border crossing document would be required in order to enter the United States at the border facility before hiking the trail.

Climate

According to the Köppen Climate Classification system, First Connecticut Lake has a warm-summer humid continental climate, abbreviated "Dfb" on climate maps. The hottest temperature recorded at First Connecticut Lake was 93 °F (33.9 °C) on July 8, 1921 and July 19, 1953, while the coldest temperature recorded was −45 °F (−42.8 °C) on February 1, 1920.

Connecticut Lakes Natural Area

The 25,000 acres (10,000 ha) surrounding the lakes was set aside as a land conservation project in 2002 by the New Hampshire Fish and Game Department. The protected area is within the towns of Clarksville and Pittsburg, up to the border with Canada.

See also

• List of lakes in New Hampshire

References

1. ^ "First Connecticut Lake". New Hampshire's Connecticut Lakes Region. Retrieved August 13, 2019.
2. ^ "Welcome To UNH/GRDC Composite Runoff Fields V1.0". www.compositerunoff.sr.unh.edu. Archived from the original on August 3, 2013.
3. "First Connecticut Lake, Pittsburg" (PDF). NH Fish & Game. Retrieved August 12, 2014.
4. ^ George Merrill Drew. "History of Coos County, New Hampshire". Retrieved April 3, 2017.
5. ^ "Second Connecticut Lake". New Hampshire's Connecticut Lakes Region. Retrieved August 13, 2019.
6. "Second Connecticut Lake, Pittsburg" (PDF). NH Fish & Game. Retrieved August 12, 2014.
7. ^ "Third Connecticut Lake". New Hampshire's Connecticut Lakes Region. Retrieved August 13, 2019.
8. ^ "Third Connecticut Lake, Pittsburg" (PDF). NH Fish & Game. Retrieved August 12, 2014.
9. ^ "Fourth Connecticut Lake Preserve" (PDF). The Nature Conservancy. Retrieved August 15, 2019.
10. ^ "Fourth Connecticut Lake". The Nature Conservancy. Retrieved August 15, 2019.
11. Pletcher, Larry (May 2019). Hiking New Hampshire: A Guide to New Hampshire's Greatest Hiking Adventures. Rowman & Littlefield. ISBN 978-1-4930-3459-8.
12. Delorey, Alan (1996). A Birder's Guide to New Hampshire. American Birding Association. ISBN 978-1-878788-11-5.
13. ^ "NOAA Online Weather Data – NWS Gray/Portland". National Weather Service. Retrieved February 1, 2023.
14. "U.S. Climate Normals Quick Access – Station: First Connecticut Lake, NH". National Oceanic and Atmospheric Administration. Retrieved February 1, 2023.
15. New Hampshire Wildlife Management Areas Archived 2012-01-25 at the Wayback Machine. Wildlife.state.nh.us. Retrieved on 2013-08-21.

External links

• Summer at First Connecticut Lake in Pittsburg, NH Aerial view in 4K via YouTube
• 4th Connecticut Lake - US/Canada Border Hike via YouTube
• The Crumbling, Leaking Dam at the first Connecticut Lake via YouTube

• Lake groups of the United States
• Lakes of Coös County, New Hampshire
• Pittsburg, New Hampshire
• Connecticut River
• New Hampshire placenames of Native American origin