Green Lake (Wisconsin)

Green Lake
Big Green Lake
Green Lake Show map of Wisconsin Green Lake Show map of the United States
Hydrographic Map of Green Lake Wisconsin
Location	Green Lake County, Wisconsin, United States
Coordinates	43°49′28″N 88°57′52″W / 43.82444°N 88.96444°W / 43.82444; -88.96444
Type	Dimictic
Etymology	Green appearance of the water
Part of	Big Green Lake Watershed
Primary inflows	Silver Creek, White Creek, Dakin Creek, Hill Creek, Wurches Creek, Roy Creek, Spring Creek, Assembly Creek
Primary outflows	Puchyan River
Catchment area	277.9 km2 (107.3 sq mi)
Basin countries	United States
Managing agency	Green Lake Association, Green Lake Sanitary District
Max. length	11.75 km (7.30 mi)
Max. width	3.219 km (2.000 mi)
Surface area	2,973 ha (7,350 acres)
Average depth	30.48 m (100.0 ft)
Max. depth	72.24 m (237.0 ft)
Water volume	0.9390 km3 (761,300 acre⋅ft)
Residence time	21 years
Salinity	502.80 - 532.88 uS/cm
Shore length1	43.94 km (27.30 mi)
Surface elevation	242.3 m (795 ft)[1]
Max. temperature	27.2 °C (81.0 °F) Highest average, 2018
Frozen	87 days
Settlements	Green Lake, Wisconsin
1 Shore length is not a well-defined measure.

Green Lake — also known as Big Green Lake (to distinguish it from Little Green Lake, which is near Markesan)— is a lake in Green Lake County, Wisconsin, United States. Green Lake has a maximum depth of 237 ft (72 m), making it the deepest natural inland lake in Wisconsin and the second largest by volume. The lake covers 29.72 km² (7,340 acres) and has an average depth of 30.48 m (100.0 ft). Green Lake has 43.94 km (27.30 mi) of diverse shoreline, ranging from sandstone bluffs to marshes.^[2]