Lake Huron, the second largest of the Great Lakes of North America, is bordered to the west by Michigan (USA), and in the north and east of Ontario (Canada). The lake is 331km long from the northwest to the southeast, and its maximum width is 295km. The total area of its basin is 133,900 km2, only the surface of the lake is 59,600 km2. The approach to the lake gets from the Lake Superior (across the River St. Mary), from Lake Michigan (through the Straits of Mackinac). The lake is emptied at its southern end in Lake Erie (across the St. Clair River, Lake St. Clair, and the Detroit River). With an average surface height of 176m above the sea level, the lake reaches a maximum depth of 230m. Many islands lie in the northeastern part of the lake, and considerably Manitoulin Island and many others in the Georgian Gulf and North Channel, Mackinac Island and several others are located near the Mackinac Strait in the northwestern part of the lake.
Logging and fishing were important economic activities in the Huron region. As part of the St. Lawrence , the lake supports heavy commercial traffic of iron ore, grain and limestone. The average navigation season extends from the beginning of April to the end of December. Large tonnes of limestone are embarked on Rockport and Rogers City, Mich. Other ports important in local trade include Cheboygan, Alpena, Bay City, Harbor Beach (Michigan) and Collingwood, Midland, second lunch, Port McNicoll and Depot Harbor in Georgianzalov (in Ontario). Lake Huron is a popular recreational place, especially in the summer months, when the surface temperature of the water can reach 23 ° C in August. The lake does not freeze often about once in ten years and this happened the last time in 2003. Low temperatures are around 1° C.