Wonder Lake State Park is a 1,145-acre (4.6 km²) Putnam County state park located in Patterson, New York.^[2]

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Wonder Lake State Park
Wonder Lake in Patterson, New York
Location of Wonder Lake State Park within New York State
Type	State park
Location	1498 Route 301 Carmel, New York[1]
Nearest city	Carmel, New York
Coordinates	41°29′42″N 73°38′57″W
Area	1,145 acres (4.63 km2)[2]
Created	1998 (1998)
Operated by	New York State Office of Parks, Recreation and Historic Preservation
Open	All year
Website	Wonder Lake State Park

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Thirty-acre (0.12 km²) Wonder Lake was constructed in the 1930s as part of a series of improvements to the property by A. L. Cushman, who owned a chain of bakeries in New York City. The smaller Laurel Pond, three acres (0.012 km²) in size, was also formed after the construction of a dam was completed during the same time period.^[3]

The core of Wonder Lake State Park was the summer home of television star Elizabeth Montgomery prior to her death in 1995.^[4]

The New York State Office of Parks, Recreation and Historic Preservation acquired the 794-acre (3.21 km²) Wonder Lake property in November 1998 using Clean Water/Clean Air Bond Act funds.^[4] The park was expanded by the purchase of 106 acres (0.4 km²) of open space in February 2006^[5] and it was further expanded in 2010, expanding the park to its current size.^[3] Prior to the 106-acre (0.43 km²) purchase, the tract was surrounded by private property with no public access.^[6]

As of 2013, Wonder Lake State Park contained 8.7 miles (14 km) of trails, including the Highlands Trail, which passes Laurel Pond and encircles Wonder Lake. Four other trails cover much of the northern, central and western areas of the park.^[6]

Wonder Lake State Park serves to protect portions of the Great Swamp watershed, and serves as a link with other public lands in the area.^[4]

• List of New York state parks