|Location||Shrewsbury / Worcester, Worcester County, Massachusetts|
|Primary outflows||Quinsigamond River|
|Basin countries||United States|
|Max. length||4 mi (6 km)|
|Surface area||772 acres (312 ha)|
|Max. depth||85 ft (26 m)|
|Surface elevation||358 ft (109 m)|
|Islands||8 (Drake Island)|
Lake Quinsigamond (also Long Pond) is a body of water situated between the city of Worcester and the town of Shrewsbury in Worcester County, Massachusetts, USA. It is 4 miles (6 km) long, between 50 and 85 feet (15 and 26 m) deep, and has a surface area of approximately 772 acres (3.1 km²). Lake Quinsigamond hosts 8 islands with the majority owned by private citizens. Two islands are connected to land via bridge. The largest island, Drake Island, is still state owned. Water from the lake empties into the Quinsigamond River in the Blackstone Valley.
Bridging the lake 
The lake's long and narrow shape posed a challenge to settlers of the Worcester area in the 17th century. Lacking modern bridging techniques, westward travelers had to ride around the lake's northern and southern tips. At the turn of the 19th century, Isaiah Thomas, a Worcester resident, developed plans for a direct link between Worcester and Boston (plans that eventually became Route 9). Construction of this road was under the authority of the Worcester Turnpike Corporation (until 1841; thereafter, the city of Worcester). Like the settlers 150 years earlier, Thomas and company faced the problem of Lake Quinsigamond. The first span across the lake was a floating log bridge, built in 1806. This first attempt was unstable, often swaying under the weight of horse-drawn wagons. The floating bridge was broken apart by waves in 1806, and was rebuilt in the year 1807 as an interim solution.
The second bridge was an early suspension bridge, and was completed in early 1817. Nine wooden piers, built into the lakebed at regular intervals, held aloft a gravel-covered plank bridge. Due to the unstable nature of the lakebed, the nine piers settled at different levels, causing gaps to appear in the road surface. The piers and the bridge split apart and fell into the water on September 19, 1817. The collapse of the suspension bridge was quickly followed with a second floating bridge, this one lasting until 1861.
The first stable bridge over Lake Quinsigamond (the fourth such attempt overall) was an earthen causeway, finished in 1863. Formed from a mixture of rock, gravel and dirt, the causeway was the first span to not sway under heavy loads. The causeway effectively split the lake in half, stifling the nascent lakeside steamboat industry. Contemporary public opinion likened the causeway to an 'eyesore' and an 'abomination'. Despite these problems, the span survived into the early 20th century, when it was replaced by the current bridge. In ca. 1900, the causeway was expanded to include trolley tracks, linking downtown Worcester to the lakeside attractions.
A modern, two-lane bridge made of stone, cement and steel replaced the old causeway on July 31, 1919. Renovations completed in 1973 expanded the bridge to its present form, a two-lane main route. At the north end of the lake, a second bridge, one supporting Interstate 290, was built with the construction of that four-lane divided highway in the 1960s.
As of 2012, the bridge over which Route 9 goes is currently under renovations with plans of expanding the bridge to support more lanes. The increasingly trafficked Lakeway Business District of Shrewsbury along with infrastructural concerns were a main reason for the renovations.
Attractions on the lake 
Most of the lakeside development occurred around the southern shores, due to the construction of the causeway in 1863. The causeway split the lake in half for those traveling by water, namely, steamboat cruises and competitive rowers. Lincoln Park, a family amusement park, opened on the Worcester (western) side of the lake in 1894; steamboat cruises began twenty years earlier, launched from the site of the Park. Horace H. Bigelow, a local businessman, opened a competing amusement park called White City on the Shrewsbury side in 1905. Both parks became famous for unique rides: Lincoln for the 'Dummy Railroad,' a passenger train running between Union Station in Worcester and the Park; White City, for its artificial lake, Shoot-the-Chutes ride, and other water attractions.
By the 1940s, both parks began to suffer declines in attendance due to development elsewhere along the lake's shores. White City, once a park that featured '50,000 Electric Lights,' shut down on Labor Day, 1960. Lincoln Park closed in 1961, and the White City property was sold in November of that same year. Both parks lost buildings due to suspicious fires during their final years.
The buyer of the White City property, Albert Shore, developed the land into a shopping center and movie theater complex shortly after the amusement park's closure. The retail complex still bears the White City name, though the movie theater, White City Cinemas, was shut down in recent years. An elder apartment complex now stands on the former site of Lincoln Park.
Quinsigamond State Park is located on the Worcester side, to the north and south of Route 9.
Regattas on the lake 
Competitive rowing teams first came to Lake Quinsigamond in 1857. Finding the lake ideal for such crew regattas, avid rowers established boating clubs on the lake's shores, the first being the Quinsigamond Boating Club. More boating clubs and races followed, and soon many colleges (both local and abroad) held regattas on the lake, such as the New England Rowing Championships, the ECAC National Invitational Championship, the Eastern Sprints, the Big East Championship and the Patriot League Championship. The NEIRA championship regatta has been held on the lake since the 1950s and now features over 40 schools in 8+, 4+ and 1X divisions. Beginning in 1895, local high schools held crew races on the lake. In 1952, the lake played host to the National Olympic rowing trials. The Quinsigamond Rowing Association hosted the US Rowing Masters National Championship in 2005 and 2012.
- Worsley, Monica (August 12, 2012). "Two Teams Double Up on National Titles at 2012 USRowing Masters National Championships". USRowing. Retrieved 2013-03-26.
- Perna, Michael P. Jr. (1997). Remembering Lake Quinsigamond: From Steamboats to White City. Worcester: Chandler House Press. ISBN 1-886284-02-4
- Southwick, Albert B. (1994). Once-Told Tales of Worcester County. Worcester: DATABOOKS. ISBN 0-9636277-5-9