Allan H. Treman State Marine Park is a 91-acre (0.37 km²) state park and marina located in the City of Ithaca in Tompkins County, New York, United States. The park is located at the south end of Cayuga Lake, one of the 11 Finger Lakes of New York. The park's namesake, Allan Hosie Treman (1899-1975) was a Cornell University law professor, Ithaca city counsel, and member of the Finger Lakes Park Commission.^[4] He is the son of Robert H. Treman, who also has a state park named in his honor.

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Allan H. Treman State Marine Park
Marina at Allan H. Treman State Marine Park
Location of Allan H. Treman State Marine Park within New York State
Type	State park
Location	805 Taughannock Blvd. Ithaca, New York[1]
Nearest city	Ithaca, New York
Coordinates	42°28′N 76°31′W
Area	91 acres (0.37 km2)[2]
Operated by	New York State Office of Parks, Recreation and Historic Preservation
Visitors	341,963 (in 2020)[3]
Open	All year
Website	Allan H. Treman State Marine Park

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Allan H. Treman State Marine Park offers an eight-lane boat launch and a marina that includes 370 seasonal, 30 transient and 30 dry boat slips. Boats launched at the facility have easy access to the New York State Canal System. Fishing, birdwatching opportunities (waterfowl and wetland species), and picnic tables are also available at the park.^[1]

• The marina connects to the south end of Cayuga Lake via the lake inlet.
• The cottonwood grove features 100-foot (30 m) cottonwood trees mixed with maples and other species
• Another view of the cottonwood grove
• The picnic area in the cottonwood grove

• List of New York state parks