|Location||Steuben / Yates counties, New York, USA|
|Primary outflows||Keuka Lake Outlet|
|Basin countries||United States|
|Max. length||20 mi (32 km)|
|Max. width||0.5-2 mi (1-3 km)|
|Surface area||11,730 acres (4,750 ha)|
|Average depth||101 ft (31 m)|
|Max. depth||187 ft (57 m)|
|Shore length1||60 mi (96 km)|
|Surface elevation||715 ft (218 m)|
|Settlements||Penn Yan, Hammondsport, Branchport|
1 Shore length is not a well-defined measure.
Keuka Lake (// KEW-kə) is an unusual member of the U.S. state of New York's Finger Lakes because it is Y-shaped, instead of long and narrow. Because of its shape, it was referred to in the past as Crooked Lake. Keuka means "canoe landing" in the Iroquois language and "lake with an elbow" in the Seneca language.
Keuka Lake empties into another Finger Lake, Seneca Lake, from a stream, called Keuka Lake Outlet, at the lake's northeastern end in Penn Yan, New York. The stream empties into Seneca Lake at the village of Dresden. At one time the outlet was developed into a canal, the Crooked Lake Canal, connecting the lakes. This canal was later replaced by a railroad branch line which is now a hiking and cycling trail.
The lake is about 20 miles (32 km) long and varies in width from a half mile to two miles (1–3 km). The length of the shoreline is about 60 miles (96 km). It has a surface area of 11,730 acres (47 km²), and a maximum and mean depth of 186 feet (57 m) and 101 feet (31 m) respectively. This body of water possesses large and healthy populations of lake trout, brown trout, rainbow trout, landlocked salmon, smallmouth bass, largemouth bass, and yellow perch. The productive fishery is supported by huge numbers of baitfish, most notably alewives (sawbellies), and is a very popular lake with area fishermen.
The village of Penn Yan, New York is at the northeastern tip of the lake, and Branchport is at the northwestern tip. Hammondsport lies at the south end of the lake. Hammondsport was the home of Glenn Curtiss, a pioneer of naval aviation, and is now the site of the Glenn H. Curtiss Museum.
While the shore of the lake is primarily residential, Keuka College is located in Keuka Park on the western shore of the east branch and Keuka Lake State Park is located on the eastern side of the northwest branch of the lake. YMCA Camp Cory is located on the eastern side of the northeast branch of the lake. Camp Good Days and Special Times is located on the western side of the northwest branch of the lake. An important component of the economy of this region is based on grape growing and wine production and vineyards cover some areas sloping down to the lake.
Lake ecology 
Humans, fish, and wildlife depend on the rich ecology of the lake habitat. The complex ecosystem is subject to contamination of the watershed, largely by storm water runoff. The Keuka Lake Association (KLA) monitors the water of the lake to ensure that it is suitable for its many uses, such as drinking, fishing, and swimming. Tributary streams, groundwater, and the lake itself are regularly tested for water quality. Additionally, KLA collects and publishes data about the lake level.
The infestation of European Zebra Mussels, which has impacted many North American bodies of water, has also affected Keuka Lake and other Finger Lakes in New York. In addition to disrupting the lake's ecosystem, Zebra Mussels can be a nuisance to lakeside homeowners. Their small size enables them to clog water intake pipes. Furthermore, their sharp shells can cause lacerations on the feet of bathers. Bathers may wish to wear water shoes when swimming in the lake.
Wine trail 
List of vineyards included in the Keuka Lake Wine Trail:
- Barrington Cellars/Buzzard Crest Vineyards
- Heron Hill Winery
- Hunt Country Vineyards
- Keuka Spring Vineyards
- Dr. Konstantin Frank's Vinifera Wine Cellars
- McGregor Vineyard Winery
- Ravines Wine Cellars
- Stever Hill Vineyards
See also 
Further reading 
- Beautiful Keuka Lake from the Elmira Daily Advertiser, 1902
- Along the Outlet of Keuka Lake by Frances Dumas
- An Excursion on the Keuka Maid by Richard Sherer
- The Mary Bell: The Queen of Lake Keuka from the Hammondsport Herald, 1892
- Keuka Cottage Boy by Robert V. Anderson
- "Geographic Names Information System". Retrieved 22 July 2012.
- "Keuka Lake Tidbits".
- Keuka Lake Book - Zebra Mussels
- Locations with Zebra Mussels