Arnold Lake is a small lake located west-northwest of the Village of Milford in the Town of Hartwick in Otsego County, New York. The lake drains south via Spring Brook which flows into Goodyear Lake by Portlandville.

Arnold Lake
Arnold Lake Location of Arnold Lake within New York State
Location	Otsego County, New York
Coordinates	42°36′41″N 75°00′16″W
Primary outflows	Spring Brook
Surface area	69 acres (0.108 sq mi)
Surface elevation	1,775 feet (541 m)[1]
Settlements	Milford, New York

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