Lake Superior facts

Lake Superior is the largest freshwater lake in the world by surface area, contains 10% of the worlds freshwater (3 quadrillion gallons), and covers an area of 31,700 sq mi.
The average depth of Lake Superior is 483 feet with its deepest point reaching 1,332 feet.
The shoreline of Lake Superior is 2,726 miles long.
Lake Superior is the coldest of the Great Lakes with an average temperature of between 36 and 39 degrees Fahrenheit.
The highest wave ever recorded was a height of 29 feet on October 24, 2017 on Lake Superior just north of Marquette, Michigan.

The Twin Ports welcomes around 900 vessels each year and handles an average of 35 million short tons of cargo every year.
Coal and iron ore account for about 80% of the Port of Duluth-Superior’s total tonnage.
It’s 2,342 miles from the Atlantic Ocean to Duluth.
The Duluth canal started being built in 1870 and was finished in 1871.
The largest Lakers that visit Duluth are over 1,000 feet long.
It takes an average time of 130 hours to travel to the Atlantic ocean from Duluth, MN.

Built in 1905 originally operated as a gondola to cross the waterway.
Reconstructed in 1929 to operate as an elevator roadway (now known as "Aerial Lift Bridge").
Clearance of 135 feet and 386 feet wide.
Operates 24 hours a day to allow shipping traffic thru.
Averages 26 lifts per day
There are two 450 ton concrete block weights on each end acting as a counter weight to assist lifting the bridge.
It takes about 1 minute for the bridge to lift to its maximum height.
The horn blowing long- long-short-short is known as the Master Salute and is the most commonly displayed when ore ships pass under the bridge.

A LAKE SUPERIOR FISHING experience