Oldest Dams in Maine

Maine has 564 dams with recorded construction dates. The oldest dates to 1720 — 306 years ago. Many of Maine's oldest dams were built as colonial-era mill dams, powering early industry along rivers and streams. Older dams require particular attention for safety, as many were built before modern engineering standards.

#	Dam	County	Year Built	Age	Height (ft)	Hazard	Condition
1	Mill Pond	Androscoggin	1720	306 yrs	20	Low	Not assessed
2	Rich Mill	Cumberland	1770	256 yrs	12	Low	Not assessed
3	Jordan Mill Privilege	Cumberland	1770	256 yrs	12	Low	Fair
4	Fitch's Mill Pond	Cumberland	1790	236 yrs	18	Low	Not assessed
5	Rock Haven Lake	York	1790	236 yrs	14	Low	Poor
6	Leonards Mill	Penobscot	1796	230 yrs	7	Low	Not assessed
7	Peabody Pond	Cumberland	1800	226 yrs	8	Low	Not assessed
8	Keoka Lake	Oxford	1800	226 yrs	8	Low	Not assessed
9	Billings	Oxford	1800	226 yrs	18	Low	Not assessed
10	Howard Pond	Oxford	1800	226 yrs	14	High	Poor
11	Thompson Lake	Oxford	1800	226 yrs	13	Low	Not assessed
12	Wesserunsett	Somerset	1800	226 yrs	11	High	Satisfactory
13	Horne Pond	York	1800	226 yrs	7	Low	Not assessed
14	Eddington-holbrook	Penobscot	1802	224 yrs	8	Low	Not assessed
15	Puffers Pond	Penobscot	1810	216 yrs	10	Low	Satisfactory
16	Pigeon Brook	Cumberland	1811	215 yrs	12	Significant	Poor
17	Kingfield	Franklin	1811	215 yrs	14	Low	Not assessed
18	Shaker Bog	Androscoggin	1816	210 yrs	8	Low	Not assessed
19	Branch Pond	Kennebec	1817	209 yrs	25	Significant	Fair
20	Bear Pond	Androscoggin	1820	206 yrs	16	Low	Not assessed
21	Maranacook Lake	Kennebec	1820	206 yrs	12	Low	Not assessed
22	Seven Mile Stream	Kennebec	1820	206 yrs	18	Low	Poor
23	Stevens Pond	Waldo	1820	206 yrs	12	Low	Not assessed
24	Lake St George	Waldo	1820	206 yrs	15	Significant	Fair
25	Marks Lake	Washington	1820	206 yrs	12	Low	Poor
26	Colby Mills	Lincoln	1825	201 yrs	16	Low	Not assessed
27	Village	Penobscot	1826	200 yrs	16	Low	Not assessed
28	Stanhope Mill #2 Lower	Penobscot	1827	199 yrs	13	Low	Not assessed
29	Songo Lock	Cumberland	1830	196 yrs	19	Low	Not assessed
30	Mill	Kennebec	1830	196 yrs	17	Low	Not assessed
31	Collins Mills	Kennebec	1830	196 yrs	15	Low	Not assessed
32	Lovejoy Pond	Kennebec	1835	191 yrs	18	Low	Satisfactory
33	Moosehead - West Outlet	Somerset	1835	191 yrs	20	Significant	Satisfactory
34	Moosehead - East Outlet	Somerset	1835	191 yrs	26	Significant	Satisfactory
35	Mason	Waldo	1835	191 yrs	15	Low	Satisfactory
36	Kelly	Waldo	1835	191 yrs	15	Low	Satisfactory
37	Rangeley	Franklin	1836	190 yrs	17	Low	Not assessed
38	Malletts Mill	Penobscot	1836	190 yrs	16	Significant	Poor
39	West Grand Lake	Washington	1836	190 yrs	13	Significant	Satisfactory
40	Frankfort	Waldo	1840	186 yrs	18	Low	Not assessed
41	Doughty Falls	York	1840	186 yrs	16	Low	Not assessed
42	Wilson Pond	Franklin	1845	181 yrs	24	High	Unsatisfactory
43	Danforth	Washington	1845	181 yrs	16	Low	Not assessed
44	Stroudwater River	Cumberland	1849	177 yrs	16	Low	Fair
45	East Pond	Somerset	1849	177 yrs	10	Low	Not assessed
46	Sleeper	Androscoggin	1850	176 yrs	10	Significant	Poor
47	Allen Pond	Androscoggin	1850	176 yrs	7	Low	Not assessed
48	Pleasant Pond	Cumberland	1850	176 yrs	10	Low	Not assessed
49	Watchic Pond	Cumberland	1850	176 yrs	7	Low	Not assessed
50	Mill Pond	Kennebec	1850	176 yrs	14	Low	Not assessed

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