Otis Reservoir, Massachusetts, USA

Lake Locations:

USA - New England - Massachusetts - Western -

Also known as:  Otis Lake

She sits by herself on the dock at Otis Reservoir; the coffee steaming in her mug mirrors the mist coming off the water of the lake. Her husband left at dawn in search of his own trophy largemouth bass. It will be hours before her children are awake, swimming and riding jet skis across the waters of Otis Reservoir. For now she has it all to herself, the day stretching in front of her with promise and potential. The Berkshires are famous for their museums, music and culture: she could go shopping and have lunch in one of the area’s many restaurants or maybe golf or go horseback riding. The possibilities are almost endless, but perhaps the most attractive is spending the day right where she is, soaking up the sun and dangling her feet in the cool, clear water of Otis Reservoir.

In 1865, the Farmington River Power Company built a dam on the Fall River, a tributary of the Farmington River. The resulting reservoir was created to provide water storage to run the mills along the Farmington River. Otis Reservoir flooded three natural ponds: Rand Pond, Messenger Pond and Cotton Pond. Stretching three miles long, Otis Lake’s 1,085 acres cover parts of Hampden and Berkshire counties in the Western region of Massachusetts.

Almost immediately after it was formed, cottages started to spring up on the shores of Otis Reservoir. Over the years, most of them have been replaced by larger lakefront homes, which can be second homes, permanent residences, or vacation rentals. There is real estate available for sale both on the lake and also in nearby Otis and Tolland.

In addition to the private residences, there are several public marinas and lakeside restaurants. About a quarter of the shoreline of Otis Reservoir is part of Tolland State Forest. The forest includes a campground and swimming area. Hunting in season includes deer, bear and turkeys. The state forest also maintains a boat launch that provides access to Otis Reservoir. There is more than enough water to boat, water ski, jet ski, sail or canoe and kayak.

The Massachusetts Division of Fisheries and Wildlife regularly stocks Otis Reservoir with trout. Anglers will find abundant populations of catfish, bluegill, and white and yellow perch along with lake trout and largemouth bass. In the winter, water in the reservoir is drawn down about eight feet to improve fish habitat and protect property owners’ docks. The lake fills with snowmelt and water from underground springs and is usually full again by late spring.

Winter is also a fantastic time to explore the Berkshires. With snowmobiling and both cross-country and downhill skiing popular, it transforms into a snow-covered playground each winter. Just two and half hours from New York City and Boston, the Berkshires draw visitors from all over. The region is a cultural treasure, especially known for its music, dance, art and historical museums. The Hancock Shaker Village is a fantastic day trip from Otis Reservoir. In 1960, the Shakers sold the entire village to a group that established a non-profit organization. In 1961, it opened as a museum. Visitors today wander the grounds and explore the restored buildings and Shaker collection.

The rolling green hills of the Berkshires and the cool, clean water of Otis Reservoir combine for the perfect western Massachusetts getaway. Add the museums, music and cultural opportunities of the Berkshires and the boating, swimming fishing and waterskiing of Otis Reservoir and it becomes a destination for all seasons.

Things to do at Otis Reservoir

  • Vacation Rentals
  • Fishing
  • Boating
  • Sailing
  • Swimming
  • Canoeing
  • Kayaking
  • Jet Skiing
  • Water Skiing
  • Golf
  • Camping
  • Campground
  • Downhill Skiing
  • Snowmobiling
  • Horseback Riding
  • Hunting
  • Wildlife Viewing
  • Birding
  • State Forest
  • Museum
  • Playground
  • Shopping

Fish species found at Otis Reservoir

  • Bass
  • Black Bass
  • Bluegill
  • Catfish
  • Lake Trout
  • Largemouth Bass
  • Perch
  • Sunfish
  • Trout
  • Yellow Perch

Otis Reservoir Photo Gallery

Otis Reservoir Statistics & Helpful Links

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Lake Type: Natural Freshwater Lake, Dammed

Water Level Control: Otis Reservoir POA

Surface Area: 1,085 acres

Normal Elevation (Full Pond): 1,417 feet

Average Depth: 18 feet

Maximum Depth: 48 feet

Water Volume: 17,188 acre-feet

Completion Year: 1865

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Trophic State | LakeLubbers

Trophic State measures the level of algae and nutrients in a lake.

An oligotrophic lake is very clear (blue in color) and does not support much plant or fish life. A hyper-oligotrophic lake is the clearest of all lakes, and is nearly devoid of plants and fish.

A mesotrophic lake is slightly green and supports a moderate degree of plant and fish life. A lake's most desired trophic state is generally this mid-point - the mesotrophic state.

A eutrophic lake is somewhat murky and supports a large amount of plant and fish life. A hypereutrophic lake is clouded with algae, plant life, and fish life. A eutrophic or hyper-eutrophic lake can be difficult to navigate by boat - and is often an unpleasant place to swim.

The use of phosphorus-rich and nitrogen-rich fertilizer on lawns and golf courses surrounding a lake can cause it to become eutrophic or hypereutrophic.


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Catchment or Drainage Area | LakeLubbers

This is the surrounding area that drains into a lake, including land, rivers and their tributaries. This is also known as the lake's "catchment basin".

Small lakes at the highest peaks of mountains have small drainage areas. The world's oceans have the largest drainage areas.


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Lake-Area Population | LakeLubbers

This is the estimated number of people who live in a house with a view of a lake, plus those who self-describe the lake as their home, for example: "I live at Smith Mountain Lake."


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Water Residence Time | LakeLubbers

This is the estimated time that it takes for an amount of water equal to the entire volume of a lake to flow out of - or evaporate from - the lake.

Residence Time can be as short as a few days for fast-flowing small lakes, and can exceed 100 years for slow-flowing large lakes.


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Completion Year | LakeLubbers

This is the year that a reservoir was first filled to the reservoir's normal elevation - or the year that a natural lake was first dammed. A large reservoir can take more than a year to fill after its dam is first closed.

The Grand Anicut in southern India is generally considered the world's oldest dam that still operates. Grand Anicut was constructed in the second century BC. It now impounds an irrigation network that includes roughly one million acres.

You can find many of the the world's newest reservoirs on LakeLubbers. Many of the world's oldest reservoirs appear on the last page of that list.


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Water Volume | LakeLubbers

This is the estimated volume of water that a lake contains -- measured at the lake's normal elevation. By this measure, the world's largest freshwater lake is Siberia's Lake Baikal.

You can find many of the the world's largest lakes (by water volume) on LakeLubbers.

Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet.

1 acre-foot is equal to 325,851 US gallons. Siberia's Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater - nearly 1 million gallons for every living person on earth.

The other - and more widely used - measure of a lake's size is the lake's surface acreage. By that measure, the world's largest freshwater lake is North America's Lake Superior.


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Maximum Depth | LakeLubbers

This is the estimated greatest depth of the water in a lake -- measured at the lake's normal elevation. The world's deepest lake is Siberia's Lake Baikal; that lake's maximum depth is estimated at 5,314 feet.

You can find many of the the world's deepest lakes on LakeLubbers. If you select the last page of that list, you will find the (maximum depth of) the shallowest lakes in our database.


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Average Depth | LakeLubbers

This is the estimated average depth of the water in a lake -- measured at the lake's normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake's average depth can be calculated:

Water volume ÷ Surface Area = Average Depth

Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth


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Maximum Elevation | LakeLubbers

This is a lake's highest water level, measured by the lake's surface distance above sea level, that can occur during flooding. A lake's highest possible maximum elevation is usually the top of the lake's dam or spillway.

At lakes that include residential development, government regulations usually forbid the construction of homes below a lake's maximum elevation.


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Minimum Elevation | LakeLubbers

This is a lake's lowest water level, measured by the lake's surface distance above sea level, that can be reasonably expected to occur. Low lake levels can occur due to deliberate seasonal draw downs for irrigation or impending snow melt, reduced water inflows, drought and evaporation, residential or commercial water demands, and hydropower generation.

Some lakes' minimum and maximum elevations are virtually the same. Lakes that generate hydropower may vary by several feet - according to power demand. Lakes whose primary purpose is to prevent flooding can seasonally vary by 100 feet or more.

When some lakes reach their minimum elevation, their boat ramps may not be long enough to permit boat access - and boats docked on shallow parts of the lake may end up on dry ground. In those cases, kayakers and shore-based anglers may be among the few happy recreational users of the lake.


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Normal Elevation | LakeLubbers

This is a lake's normal water level, measured by the lake's surface distance above sea level. For a reservoir, this water level is also known as "full pond" or "full pool".

You can find many of the world's highest-elevated lakes on LakeLubbers. Lakes with the lowest elevations (known by LakeLubbers) are shown on the final page of that list.


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Shoreline Length | LakeLubbers

This is the length of the exterior shoreline around a lake - measured at the lake's normal elevation. The shoreline length can be considerably shorter or longer when lake water levels are lower or higher than normal.

A lake with many coves has a much longer shoreline than a lake of similar surface area that is nearly circular in shape.

When known, the shoreline miles that we report in our statistics include only the lake's exterior shoreline, and exclude the shorelines of islands located within a lake's boundaries. In lakes with many islands, those islands' combined shorelines may exceed a lake's exterior shoreline.

You can find many of the world's longest-shoreline lakes on Lakelubbers.


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Surface Area | LakeLubbers

This is the area (acreage, square kilometers, etc.) of the top surface area of a lake - measured at a lake's normal elevation. The surface area can be considerably smaller or larger when lake levels are lower or higher than normal. North America's Lake Superior is the world's largest freshwater lake by this measure.

The other measure of a lake's size is the lake's water volume. By that measure, the world's largest freshwater lake is Lake Baikal in Siberia.

You can find many of the world's largest lakes (acres) on Lakelubbers. There is no widely-accepted minimum surface area that defines a lake. What Lakelubbers describes as a lake, you might call a pond. The smallest lake that Lakelubbers currently includes is Hawaii's 2-acre Lake Waiau.


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Water Level Control | LakeLubbers

This is the organization that controls water releases or outflows from the lake or reservoir. In the USA, this is often the US Army Corps of Engineers, a power company, a municipal water system, an irrigation district, or a paper manufacturing company. In the case of private or gated lakes, a homeowners' association may be the lake's controlling authority.

Many lakes cross borders, including North America's Great Lakes. The control of such lakes and their coveted freshwater may be amicably shared - or hotly disputed.

"Water wars" continue at many lakes as growing populations and crop irrigation needs compete for the freshwater that lakes contain.


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Lake Type | LakeLubbers

There are 3 basic types of lakes that are currently included on LakeLubbers. 2 types may be dammed or not dammed, producing 5 classifications.

- A Reservoir is a man-made freshwater lake that is usually created by damming rivers.

- A Natural Freshwater Lake occurs naturally - often by glacial activity - and has a salinity of less than 30 parts per thousand. It may be dammed to produce electricity or for other reasons.

- A Natural Saltwater Lake occurs naturally and has a salinity of more than 30 parts per thousand (ppt). It may be dammed.

"Brackish" water may be categorized as freshwater or saltwater, depending on its salt content (salinity). Oligohaline water has less than 15 ppt of salt. Mesohaline water has 15-29 ppt. Polyhaline has 30-335 ppt.


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