Lakes / New York / Suffolk County

Lakes in Suffolk County, New York

57 lakes counted in Suffolk County - the largest is Lake Montauk at 1,078 acres.

Lakes Counted

1,078 acres

Largest - Lake Montauk

65 ft

Deepest - Lake Ronkonkoma

Suffolk County, highlighted, with its largest counted lakes dotted. Outlines from Census boundary data.

All Counted Lakes

#	Lake	County	Surface Area	Max Depth
1	Lake Montauk	Suffolk	1,078 acres	-
2	Mecox Bay	Suffolk	879 acres	-
3	Georgica Pond	Suffolk	291 acres	-
4	Lake Ronkonkoma	Suffolk	243 acres	65 ft
5	Fort Pond	Suffolk	181 acres	-
6	Oyster Pond	Suffolk	138 acres	-
7	Hashamomuck Pond	Suffolk	133 acres	-
8	Tobaccolot Pond	Suffolk	131 acres	-
9	Scallop Pond	Suffolk	129 acres	-
10	New Millpond	Suffolk	105 acres	-
11	Peconic Lake	Suffolk	105 acres	-
12	Sagaponack Pond	Suffolk	104 acres	-
13	Mill Pond	Suffolk	97 acres	-
14	Great Pond	Suffolk	77 acres	-
15	Fresh Pond	Suffolk	74 acres	-
16	Long Pond	Suffolk	69 acres	-
17	Hook Pond	Suffolk	64 acres	-
18	Big Fresh Pond	Suffolk	64 acres	-
19	Wildwood Lake	Suffolk	64 acres	-
20	Agawan Lake	Suffolk	64 acres	-
21	Flax Pond	Suffolk	62 acres	-
22	Swan Pond	Suffolk	58 acres	-
23	Beach Pond	Suffolk	54 acres	-
24	Dam Pond	Suffolk	52 acres	-
25	Lake Panamoka	Suffolk	52 acres	-
26	Big Reed Pond	Suffolk	45 acres	-
27	Poxabogue Pond	Suffolk	44 acres	4 ft
28	Kellis Pond	Suffolk	40 acres	-
29	Wainscott Pond	Suffolk	39 acres	-
30	Home Pond	Suffolk	35 acres	-
31	Great Patchogue Lake	Suffolk	35 acres	-
32	Middle Farms Pond	Suffolk	34 acres	-
33	Mill Pond	Suffolk	33 acres	-
34	Great Pond	Suffolk	31 acres	-
35	Long Pond	Suffolk	30 acres	-
36	Laurel Lake	Suffolk	30 acres	-
37	Deep Pond	Suffolk	28 acres	21 ft
38	Lower Lake	Suffolk	28 acres	-
39	Channel Pond	Suffolk	27 acres	-
40	Artist Lake	Suffolk	27 acres	-
41	Seatuck Cove	Suffolk	27 acres	-
42	Belmont Lake	Suffolk	26 acres	-
43	Southards Pond	Suffolk	26 acres	-
44	Marratooka Pond	Suffolk	26 acres	-
45	Marion Lake	Suffolk	25 acres	-
46	Argyle Lake	Suffolk	23 acres	-
47	Canaan Lake	Suffolk	20 acres	-
48	Upper Lake	Suffolk	19 acres	-
49	Little Fresh Pond	Suffolk	19 acres	-
50	Sears Pond	Suffolk	15 acres	-
51	Bellows Pond	Suffolk	15 acres	-
52	West Lake	Suffolk	14 acres	-
53	Swan Lake	Suffolk	13 acres	-
54	Penny Pond	Suffolk	13 acres	-
55	Swan Pond	Suffolk	11 acres	-
56	Canaan Lake	Suffolk	3 acres	-
57	Swan Pond	Suffolk	1 acres	-

Sources: New York State DEC lake data; USGS. Verified October 30, 2026.