Question: Bates Island is located in a lake with a surface area of how many acres?

Context articles: Lake Mistassini
Great Salt Lake
Swiss Vapeur Parc
Harveys Lake (Pennsylvania)
Lake Roy (Florida)
Lake Taupo
Bates Island (Massachusetts)
Lake Chaubunagungamaug
Mormon Lake
Mahoney Lake

Lake Mistassini (in French: "Lac Mistassini") is the largest natural lake by surface area in the province of Quebec, Canada, with a total surface area of approximately 2,335 km² and a net area (water surface area only) of 2,164 km².
 It is located in the Jamésie region of the province, approximately 360 km east of James Bay.
 The Cree town of Mistissini is located on Watson Peninsula in the south-east corner of the lake, which separates Baie du Poste from Abatagouche Bay.
The Great Salt Lake, located in the northern part of the U.S. state of Utah, is the largest salt water lake in the Western Hemisphere, and the eighth-largest terminal lake in the world.
 In an average year the lake covers an area of around 1700 sqmi , but the lake's size fluctuates substantially due to its shallowness.
 For instance, in 1963 it reached its lowest recorded size at 950 square miles (2,460 km²), but in 1988 the surface area was at the historic high of 3300 sqmi .
 In terms of surface area, it is the largest lake in the United States that is not part of the Great Lakes region.
The Swiss Vapeur Parc is a miniature park in Le Bouveret, a village on Lac Léman, Switzerland.
 It was opened on June 6, 1989, by an International Festival of Steam (therefore steam trains).
 When the park opened its total surface area was 9000 m² (2.2 acres), but the park expanded and as of 2007, the park covers a surface area of 17'000 m² (or 4.2 acres).
 In 1989, the park possessed only 2 locomotives (one running on benzine and one on steam).
 As of 2007, the number of trains running on benzine has sextupled while the number of steam trains has increased to 9 trains.
 By March 31, 2007, the Park has had 2'126'000 visitors.
Harveys Lake (also known as Harvey Lake or Harvey's Lake) is a natural lake in Luzerne County, Pennsylvania.
 It has a surface area of approximately 621.5 acres, or nearly a square mile.
 The lake is situated entirely within the borough of Harveys Lake.
 By volume, it is the largest natural lake in Pennsylvania, and by surface area, is the second-largest lake.
 It is a glacial lake surrounded by hills and is the source of Harveys Creek, a tributary of the Susquehanna River.
 The lake has a stone masonry dam.
 The lake's watershed has an area of approximately 3600 acres.
 The majority of the watershed is forested, but there is some developed land as well.
 Nearly all of the developed land is close to the lake itself, and the lake is surrounded entirely by a paved road.
Lake Roy is a natural freshwater lake inside the city of Winter Haven, Florida.
 It has a 74.17 acre surface area and is located on the south side of Cypress Gardens Boulevard.
 The lake once had a larger surface area, but when Cypress Gardens Boulevard was upgraded it ran over some of the northern part of Lake Roy; this part had been filled so the road could be rerouted.
 A small part of the old lakebed is north of the street, but is more of a retention pond now, for the most part remaining dry.
 The lake is of an irregular shape.
 Lake Roy is connected by a canal on its southwest side to Lake Lulu and indirectly from there to more than twenty other area lakes.
 These lakes are linked by canals and are known locally as the Chain of Lakes.
 Most of the shore of Lake Roy is bordered by residential housing.
 Residential areas circle from the southeast around to the northwest side of the lake.
 Along Cypress Gardens Boulevard on the northwest are businesses and a hotel, Lake Roy Beach Inn, is on this street at the northeast corner of the lake.
Lake Taupo is a lake in the North Island of New Zealand.
 It is in the caldera of the Taupo Volcano.
 With a surface area of 616 km2 , it is the largest lake by surface area in New Zealand, and the second largest freshwater lake by surface area in geopolitical Oceania after Lake Murray (Papua New Guinea).
 Motutaiko Island lies in the south east area of the lake.
Bates Island is a forested and uninhabited island located in Lake Chaubunagungamaug in Webster, Massachusetts.
Lake Chaubunagungamaug, also known as Webster Lake, is a lake in the town of Webster, Massachusetts, United States.
 It is located near the Connecticut border and has a surface area of 1442 acres.
 Since 1921, the lake has also been known by a much longer name having 45 letters comprising fourteen syllables: Lake Char­gogg­a­gogg­man­chaugg­a­gogg­chau­bun­a­gung­a­maugg.
Mormon Lake is a shallow, intermittent lake located in northern Arizona.
 With an average depth of only 10 ft , the surface area of the lake is extremely volatile and fluctuates seasonally.
 When full, the lake has a surface area of about 12 sqmi , making it the largest natural lake in Arizona.
 In particularly dry times, the lake has been known to dry up, leaving behind a remnant marsh.
Mahoney Lake is a meromictic saline lake located near Okanagan Falls in British Columbia, Canada.
 It was established as an ecological reserve to preserve a southern interior saline lake, possessing unique limnological features in 1972.
 It has a unique layering, where the very bottom of the lake is very salt rich and contains hydrogen sulphide (HS), which facilitates the growth of the purple sulphur bacteria in the layer above it, where the bacteria has just enough light to grow.
 The upper layer of the lake consists of a mixing layer of fresh water.
 Mahoney Lake is alkaline because it features no inflow or outflow of water.
 The lake also contains very low levels of oxygen and an approximate pH of 7.5-9.0.
 The surface area of the lake is 18ha and the surface area of the land is 21ha, with combined total of 21 ha.