Partially frozen Lake Zoar viewed from the Pomperaug Trail just south of Oxford Connecticut's Jackson Cove Town Park.
|Location||Fairfield and New Haven counties, Connecticut|
LAKE ZOAR Latitude and Longitude:
|Managing agency||Lake Zoar Authority, 'FirstLight Power Resources'|
|Max. length||10 miles (16 km)|
|Surface area||909 acres (368 ha)|
|Average depth||29 feet (8.8 m)|
|Max. depth||72 feet (22 m)|
The lake was created by flooding an area named "Pleasantvale" or "Pleasant Vale", which had been part of Oxford and Stevenson. "Connecticut's Lakes Reflect Our History, Present". Retrieved 2018-04-02.
The Lake Zoar Authority (LZA) is an organization for promoting safety on the lake and improving water quality. The members represent the four towns bordering the lake and meet on a monthly basis. Authority is granted through the Connecticut General Statutes, section 7-151a (of the 1969 supplement). 
- September 7, 2005: A 37-year-old man named Frank Northrop died while water-skiing on the lake. 
- November 1986: Richard Crafts murdered his wife Helle Crafts in Newtown, froze the body, cut it up with a chainsaw and finally put it through a woodchipper from a bridge into the lake. 
There is a speed limit of 45 mph (72 km/h) limit daytime, 25 mph (40 km/h) from 30 minutes after sunset to 30 minutes before sunrise. Vessels are prohibited from approaching within 300 feet (91 m) on upstream side or 700 feet (210 m) on downstream side of Stevenson Dam.  Activities including fishing, water-skiing and jet skiing are permitted.
Each of the towns has a public access boat launch. The Southbury location is maintained by the state of Connecticut and is open to non-town residents. Additionally, there is canoe access from Kettletown State Park.
- Monroe, Zoar Beach Boat Ramp. 
- Newtown, Eichler's Cove. 
- Oxford, Jackson Cove Park. 
- Southbury, at the end of Scout Road. 
Lake Zoar is not stocked yearly with fish by the Connecticut Department of Environmental Protection, but the Pootatuck and Pomperaug rivers feed into it are heavily stocked with trout, many of which eventually make their way into the lake.
The lake contains the desirable Smallmouth Bass, Largemouth Bass, Northern Pike, White Perch, Yellow Perch, Calico Bass (Black Crappie), White Catfish (Ictalurus catus), Brown Bullhead, Rainbow Trout, and the Common Carp.
Most fish from Lake Zoar are generally considered safe to eat in moderation, with the exception of the Northern Pike. In a 2008 study by the United States Department of Health and Human Services Smallmouth Bass varied between 0.35 and 0.58 ppm, suitable for one meal per month. PCB levels in the lake have fallen considerably since the 1980s. 
As with all the Housatonic River impoundments south of Bulls Bridge, Zebra Mussels have invaded and colonized Lake Zoar. 
- "About". Lake Zoar Authority. Retrieved 2012-06-08.
- "Lake Zoar Authority". lakezoarauthority.org. Retrieved 2 September 2018.
- "Archived copy". Archived from the original on 2010-07-24. Retrieved 2010-08-02.
- "Man dies water-skiing on Lake Zoar". ctpost.com. 7 September 2005. Retrieved 2 September 2018.
- "23 years ago, Richard Crafts was more willing to part with his wife than his money". Newstimes.com. 19 November 2009. Retrieved 2 September 2018.
- "Lake Zoar Boat Launch Southbury". Connecticut Department of Energy & Environmental Protection. Retrieved February 9, 2015.
- "Archived copy". Archived from the original on 2010-08-05. Retrieved 2010-08-02.
- "TOWN OF NEWTOWN : PARKS & RECREATION COMMISSION" (PDF). Web.archive.org. Retrieved 2 September 2018.
- "Archived copy". Archived from the original on 2011-07-20. Retrieved 2010-08-02.
- "Health Consultation : Public Health Evaluation of Fish Contaminant Data in the Housatonic River : LAKE ZOAR, LAKE LILLINONAH, WEST CORNWALL, AND BULL'S BRIDGE IN KENT, CONNECTICUT" (PDF). Atsdr.cdc.gov. Retrieved 2 September 2018.
- "Invasive Plant Species" (PDF). Friendsofthelake.org. Retrieved 2 September 2018.
- "Zebra mussels found in two critical Connecticut lakes - Lake Scientist". Lakescientist.com. 18 October 2010. Retrieved 2 September 2018.