Great Pond is a mesotrophic, glacial‑origin reservoir located primarily in the towns of Belgrade and Rome in Kennebec County, central Maine, United States. It is the largest of the several water bodies named “Great Pond” in the state and forms part of the Kennebec River watershed.
Geography
- Coordinates: 44°32′N 69°50′W (44.533° N, 69.833° W).
- Surface area: 8,533 acres (3,453 ha).
- Length: approximately 7 mi (11 km); maximum width ≈ 4 mi (6.4 km).
- Mean depth: 21 ft (6.4 m); maximum depth: 69 ft (21 m).
- Shoreline: about 46.1 mi (74.2 km).
- Elevation: 248 ft (76 m) above sea level.
The lake lies within the Belgrade Lakes chain, extending across the border of the two towns. Its watershed covers roughly 83 sq mi (215 km²).
Hydrology
Primary inflows include Salmon Lake (via a short channel near North Belgrade), Great Meadow Stream, Robbins Mill Stream, Rome Trout Brook, and Austin Bog. The principal outflow is the Great Pond Storage Dam on Belgrade Stream, which discharges into Long Pond near the village of Belgrade Lakes. The lake’s residence time is estimated at 2.3 years.
Islands
Great Pond contains several named islands, the most prominent being Hoyt Island, Chute Island, Joyce Island, Oak Island, Pine Island, and Otter Island.
Human Use and History
The Great Pond Storage Dam, constructed in 1886, is a 14‑ft (4.3 m) high structure built originally for hydro‑electric power generation. The dam has since contributed to the lake’s current reservoir characteristics.
The surrounding communities—principally the town of Rome at the lake’s northern end and the town of Belgrade to the south and east—rely on the lake for recreation and residential development. Great Pond supports a variety of recreational activities, including boating, fishing, and seasonal tourism. It is stocked with and supports species such as land‑locked salmon, brown trout, smallmouth bass, and northern pike.
Ecology
As a mesotrophic lake, Great Pond exhibits moderate nutrient levels, supporting both cold‑water and warm‑water fish assemblages. The surrounding forested watershed contributes to water quality, although ongoing monitoring addresses potential impacts from development and shoreline alteration.
References
- United States Geological Survey (USGS) topographic maps.
- Maine Department of Inland Fisheries & Wildlife, lake survey data.
- “The Columbia Gazetteer of North America,” 2000.
- Local historical records concerning the construction of the Great Pond Storage Dam (1886).
Note: Information reflects data available from publicly accessible encyclopedic sources as of 2024.