From its headwaters in Northern New Hampshire, the Connecticut River journeys 407 miles south before it empties into the Long Island Sound at Old Saybrook, Connecticut. The creeks and streams high above New England's White Mountain Range give birth to the river's headwaters. The Connecticut River Basin is New England's largest river system, draining an area of 11,000 square miles. Over 100 million years ago dinosaurs once roamed the Connecticut River Region. However, it was the movement of glaciers which began two million years ago and ended just 12,000 years ago that shaped the lands of New England especially the Connecticut River Basin.