| Walden Pond | |
|---|---|
 Walden Pond in 2023 | |
  Walden Pond  Walden Pond | |
| Location | Concord, Massachusetts |
| Coordinates | 42°26′21″N 71°20′23″W / 42.4392°N 71.3397°W |
| Type | Kettlehole |
| Basin countries | United States |
| Surface area | 61 acres (25 ha) |
| Max. depth | 102 ft (31 m)[1] or 107 ft (33 m)[2] |
| Shore length1 | 1.7 miles (2.7 km) |
Walden Pond | |
| Nearest city | Concord, Massachusetts |
| Area | 250 acres (100 ha) |
| NRHP reference No. | 66000790[3] |
| Significant dates | |
| Added to NRHP | October 15, 1966 |
| Designated NHL | December 29, 1962 |
| 1 Shore length is not a well-defined measure. | |
Walden Pond is a historic pond in Concord, Massachusetts, in the United States. A good example of a kettle hole, it was formed by retreating glaciers 10,000–12,000 years ago.[4] The pond is protected as part of Walden Pond State Reservation, a 335-acre (136 ha) state park and recreation site managed by the Massachusetts Department of Conservation and Recreation.[1] The reservation was designated a National Historic Landmark in 1962 for its association with the writer Henry David Thoreau (1817–1862), whose two years living in a cabin on its shore provided the foundation for his famous 1854 work, Walden; or, Life in the Woods. The National Historic Preservation Act of 1966 ensured federal support for the preservation of the pond.[5]
- ^ a b Cite error: The named reference
dcrwas invoked but never defined (see the help page). - ^ As measured by Thoreau; the actual depth is variable as the pond rises and falls over a range of at least five feet (also according to Thoreau; see Walden).
- ^ "National Register Information System". National Register of Historic Places. National Park Service. July 9, 2010.
- ^ Cite error: The named reference
brochurewas invoked but never defined (see the help page). - ^ Mackintosh, Barry (1986). The National Historic Preservation Act and the National Park Service : a history. Washington, D.C.: National Park Service. p. 42. ISBN 1-249-16210-6. OCLC 852389102.