View southeast to Rattlesnake Hill from the public boat ramp
STOCKBRIDGE BOWL Latitude and Longitude:
|Lake type||great pond|
|Primary inflows||Lily Brook|
|Primary outflows||Larrywaug Brook|
|Basin countries||United States|
|Max. length||1.75 mi (2.82 km)|
|Max. width||0.75 mi (1.21 km)|
|Surface area||372 acres (151 ha)|
|Max. depth||48 ft (15 m)|
|Shore length1||6 mi (9.7 km) (approx.)|
|Surface elevation||930 ft (280 m)|
|Islands||one - ‘The Island’|
|1 Shore length is not a well-defined measure.|
Stockbridge Bowl, also known as Lake Mahkeenac, is a 372-acre (1.51 km2) artificially impounded body of water that is 4 km (2.5 mi) north of the village of Stockbridge, Massachusetts.  Above the lake’s north side with sweeping views to the south is Tanglewood, the summer home of the Boston Symphony Orchestra.
The Bowl is situated among sloping hills of the Taconic Range to the west and north and the Berkshire Hills to the east. From the north there is an impressive view over the lake and Housatonic River plain to Monument Mountain seven miles to the south. The portion of the Taconic Range bordering the lake is known as Yokun Ridge.
The lake is 1¾ miles long, about ¾ miles wide, and its shoreline totals approximately six miles (10 km). The primary inflow into the Bowl is from the northeast through Lily Brook. The drainage is from the southwest by Larrywaug Brook, which is a tributary to the Housatonic River.  At its deepest, the lake is 48 feet deep. The lake is artificially impounded by a dam at the end of a natural outlet a half mile from the lake’s southwest corner.
The lake suffers from eutrophication due to excess nutrients blamed on runoff from development and septic systems in the immediate area.  Invasive species are also impacting the lake’s eco-system. These include the Eurasian Water Milfoil. Attractive, but invasive, are water lilies, plentiful at the southwest corner of the lake and though the passage to the outlet and dam. Strategies to counter these problems include boat inspections for the mussels, periodic partial drainage and lake weed removal.
Stockbridge Bowl is the largest lake within the Town of Stockbridge, with a public boat ramp making the lake accessible to all, provided that any vessel being launched into the Bowl must be thoroughly washed first to remove all possible Zebra Mussel contamination. Throughout the year, the lake is extensively used by scullers, canoers, kayakers, sailers, swimmers, waterskiers, powerboaters, and fishermen. The Bowl is also home to the Mahkeenak Boating Club, a venerable sailing and social club with a three-story boathouse on the western side of the lake. When not performing or practicing, many members of the Boston Symphony Orchestra enjoy a beach owned by the BSO on the northern shore of the lake. Residents of the Town of Stockbridge may use the Town Beach on the southeast corner of the Bowl.
Each September, during the annual Josh Billings RunAground, a team triathlon event, the middle leg of the race requires canoers and kayakers to navigate one and three-quarters times around the perimeter of the lake. Up to 550 teams compete in the "Josh." The first leg of the Josh is a 28 miles bike race which starts in Great Barrington; and, the final leg is a six-mile foot race that begins at the water's edge in Camp Mah-Kee-Nac and ends at the main gate to Tanglewood.
The shoreline is the site of more than 450 private cottages. Estates from the Gilded Age and their historic sites are adjacent to the lake. and numerous in the area. Seranak Cottage, above the lake’s north side, is a 34-room house owned by the Boston Symphony Orchestra. This was formerly the summer home of Serge Koussevitzky, the music director of the orchestra and the founder of Tanglewood Music Center. The Shadow Brook Farm Historic District is part of the former Shadow Brook estate, once owned by Andrew Carnegie, and where he died. Nearby Wheatleigh is another remnant of the Gilded Age that is now a resort.
Although as a Great Pond the lake is nominally owned by the Commonwealth of Massachusetts, the maintenance of the lake is the responsibility of the Town of Stockbridge. Since 1946, the Town has been assisted by the Stockbridge Bowl Association in protecting and restoring the ecology of Stockbridge Bowl. The Association or "SBA" has approximately 350 members who live in or near the watershed of the Bowl. SBA has taken an active role in promoting safe use of the lake and in controlling the quality of the lake.
In 2012, the SBA spearheaded the installation of a 255 foot long diversion drain which will allow the water level in the Bowl to be drawn down 5.5 feet in the late fall. Such a drawdown has been successful in many other lakes in the Berkshires and elsewhere to limit the growth of an invasive Eurasian Water Milfoil. The fout-foot diameter diversion drain cost $1 million to engineer, to get regulatory approval and to install. The SBA worked closely with the Town to raise the funds needed for this project. Richard Seltzer, President of the SBA, has noted that "The ability to achieve a 5.5 foot drawdown is a major milestone in improving and restoring the health of the Bowl. It represents a triumph of cooperation between the Board of Selectmen and the SBA."
- U.S. Geological Survey Geographic Names Information System: Stockbridge Bowl
- Housatonic River Stockbridge Stream Team, Shoreline Survey Report and Action Plan, Housatonic Valley Association and Massachusetts Riverways Adopt-a-Stream Program. May 2002. Page 6.
- Interesting Facts about Stockbridge Bowl, Stockbridge Bowl Association website, accessed Feb 6, 2012
- National Program for Inspection of Non-Federal Dams. Stockbridge Bowl Dam (MA 00022), Housatonic River Basin, Stockbridge, Massachusetts. Phase I Inspection Report, U.S. Army Corps of Engineers, Waltham, Massachusetts, April 1981.
- Inventory of dams in Massachusetts, scribd.com website, accessed July 15, 2010. Original source and date undetermined.