Lake Lillinonah is a 1,547-acre reservoir in southwestern Connecticut, stretching 12 miles with 45 miles of shoreline. Created in 1955 by damming the Housatonic River, it is the state's second-largest lake. The lake is long and river-like, with steep forested banks along most of its length.

Two public boat launches provide access: Lake Lillinonah launch with a paved parking lot and Pond Brook launch with a gravel lot. The lake is popular for kayaking, canoeing, and fishing. Its size helps minimize crowding along the shore.

Anglers target largemouth and smallmouth bass, northern pike, perch, crappie, and catfish. Lake Lillinonah ranks first in Connecticut for bass growth rates and hosts around 50 bass fishing tournaments annually. The state record northern pike (29 pounds) was caught here.

Wildlife viewing opportunities abound, with bald eagles wintering below Shepaug Dam where a viewing area has been established. The lake's picturesque forested shoreline creates ideal conditions for nature photography.

Water quality is notably good, with Lake Lillinonah described as having "crystal-clear waters." Its clean, clear appearance contributes to its reputation as one of Connecticut's best lakes for water clarity.

The lake is managed for hydroelectric power generation and flood control. Water levels may fluctuate, so paddlers should be aware of changing conditions. Ice forms in winter, allowing for ice fishing.

Nearby attractions include hiking trails and over 200 geocaching locations in the vicinity. The northern end of the lake reaches the town of New Milford, while the southern end is defined by Shepaug Dam.