100ft waves where recorded in 1947 (unverified - gpronger 20110514)
From gpronger:
I ended up here after Googling the question. However, I am unable to verify 100 foot. The problem would be that the size of a wave is controlled by the size of the body of water (fetch) as is the period (distance between waves).
On Lake Michigan we can have a seich; which is similar to a tsunami but not due to a earthquake or underwater landslide but weather.
Waves, as best I can tell can get to around 20 feet with Lake Superior at 30 feet.
12 feet
Lake Huron has officially recorded waves surpassing 35ft in height in most severe storms. In the storm of 1913, the J.H. Sheadle was reportedly hit by a 70-90ft wave disabling the vessel for a period of time almost sinking her.
The Biggest Wave was created in 1987.
The biggest verified recorded wave sizes in Hawaii all hover around the 50ft mark.
43 feet
In1904 there was a long heat wave.
Movement in the earth's crust, as in earthquakes.
A rogue wave. One once measured up to 1740 feet.
When you throw a stone into a lake, you create a circular wave known as a ripple. This ripple expands outward in all directions from the point where the stone entered the water.
Wave Blaster
Lake Mille Lacs, on any given weekend during the ice-fishing season, has the 5th or 6th largest population in MN (of people), just like a city of it's own, on the lake. It has plowed roads with "street signs", distance markers to the various "hot spots", and other city-like things. All the fish houses also need an owner's name and contact info (address) on them. Also, the largest inland wave ever recorded occurred on Lake Superior, at 31 feet, yes, that's right, FEET. That, and other facts about the big lake are found on it's own web site.
The largest wave ever recorded was a 1,720 feet (524 meters) high tsunami that struck Lituya Bay, Alaska in 1958. This wave was caused by a landslide into the bay and is considered the tallest tsunami in recorded history.