also home to a robust population of "sawbellies," the local term for alewife shad. History Seneca Lake was formed at least two million years ago by glacial carving of streams and valleys. Originally it was a part of a series of rivers that flowed northward. Around this time many continental glaciers moved into the area and started the Pleistocene glaciation also known as the Ice Age. It is presumed that the Finger Lakes were created by many advances and retreats of massive glaciers that were up to 2 miles wide. Over 200 years ago, there were Iroquois villages on Seneca Lake's surrounding hillsides. During the American Revolutionary War, their villages, including Kanadaseaga ("Seneca Castle"), were wiped out during the 1779 Sullivan Expedition. After the war, the Iroquois were forced to cede their land when Britain was defeated. Their millions of acres were sold and some lands in this area were granted to veterans of the army in payment for their military service. A slow stream of European-American settlers began to arrive circa 1790. Initially the settlers were without a market nearby or a way to get their crops to market. The settlers' isolation ended in 1825 with the opening of the Erie Canal. The canal linked the Finger Lakes Region to the outside world. Steamships, barges and ferries quickly became Seneca Lake's ambassadors of commerce and trade. The former, short Crooked Lake Canal linked Seneca Lake to Keuka Lake. Numerous canal barges sank during operations and rest on the bottom of the lake. A collection of barges at the southwest end of the lake, near the village of Watkins Glen, is being preserved and made accessible for scuba diving by the Finger Lakes Underwater Preserve Association. Recreation Fishing The lake is a popular fishing destination. Fish species in the lake include lake trout, rainbow trout, brown trout, landlocked salmon, largemouth bass, smallmouth bass, northern pike, pickerel, and yellow perch. Folklore Sea serpent In July 1900, newspaper reports carried reports that on the evening of 14 July 1899, the steamboat Otetiani, carrying several dozen passengers, encountered a 25-foot-long sea monster with "two rows of sharp, white teeth." The steamer is said to have given chase to the creature and deliberately rammed it at full speed. The creature was struck by the ship's paddle wheel midway between head and tail, it spine broken. It raised its four-foot-long head, then gave a gasp