The Connecticut River Valley is a region in the northeastern United States, primarily located in the state of Connecticut and extending into Massachusetts, New Hampshire, and Vermont. It is defined by the Connecticut River, which flows approximately 410 miles from its source in New Hampshire to its mouth at Long Island Sound. The valley is known for its fertile land, making it an important agricultural area. The valley is also rich in history and culture, featuring several towns and cities, including Hartford, the state capital of Connecticut. The region is home to various parks and recreational areas, offering opportunities for outdoor activities such as hiking, fishing, and boating along the river.