Dams in Maine

%!s(int=580)Total Dams

75High Hazard

77Significant

427Low Hazard

Dam Safety in Maine

Maine has 580 dams tracked in the National Inventory of Dams. Of these, 75 (12%) are classified as high hazard — meaning failure would probably cause loss of human life — and 77 are classified as significant hazard. Currently, 81 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.

The average dam in Maine is 111 years old. Many of these aging structures were built before modern dam safety standards were established, which increases the importance of regular inspections and maintenance. The most common purpose for dams in Maine is hydroelectric, accounting for 225 of the state's dams.

Use the search above to find dams near any address in Maine, or browse by county below. Each dam listing includes its hazard potential classification, condition assessment, physical characteristics, and inspection history from the NID.

Maine Dam Facts

Total Dams	580
High Hazard Dams	75
Average Dam Age	111 years
Tallest Dam	175 ft
Largest Reservoir	1,080,000 acre-ft
Poor/Unsatisfactory Condition	81

Notable Dams in Maine

Indian Pond175 ftHigh Wyman155 ftHigh Gulf Island99 ftHigh Ripogenus83 ftHigh Violette Brook75 ftHigh

Counties in Maine

1 dams1 high hazard Androscoggin25 dams4 high hazard Aroostook41 dams12 high hazard Cumberland35 dams3 high hazard Franklin25 dams1 high hazard Hancock36 dams7 high hazard Kennebec41 dams4 high hazard Knox14 dams3 high hazard Lincoln19 dams1 high hazard Oxford48 dams8 high hazard Penobscot67 dams8 high hazard Piscataquis37 dams6 high hazard Sagadahoc9 dams Somerset49 dams10 high hazard Waldo27 dams Washington54 dams2 high hazard York52 dams5 high hazard

High Hazard Dams in Maine

Dam	County	Height	Condition	Purpose
Indian Pond	Somerset	175 ft	Satisfactory	Hydroelectric
Wyman	Somerset	155 ft	Satisfactory	Hydroelectric
Gulf Island	Androscoggin	99 ft	Satisfactory	Hydroelectric
Ripogenus	Piscataquis	83 ft	Satisfactory	Hydroelectric
Skelton	York	75 ft	Satisfactory	Hydroelectric
Violette Brook	Aroostook	75 ft	Fair	Flood Risk Reduction
Aziscohos	Oxford	74 ft	Satisfactory	Hydroelectric
Mount Zircon	Oxford	70 ft	Fair	Water Supply
Dolby	Penobscot	66 ft	Satisfactory	Hydroelectric
Trafton Lake	Aroostook	66 ft	Fair	Flood Risk Reduction
Bell Marsh	York	62 ft	Satisfactory	Water Supply
Ellsworth	Hancock	62 ft	Satisfactory	Hydroelectric
Durepo Brook	Aroostook	60 ft	Satisfactory	Flood Risk Reduction
Seboomook Lake	Somerset	60 ft	Satisfactory	Hydroelectric
Graham Lake Flood Control	Hancock	58 ft	Satisfactory	Hydroelectric
Libby Brook	Aroostook	53 ft	Unsatisfactory	Flood Risk Reduction
Weston - South Channel	Somerset	51 ft	Satisfactory	Hydroelectric
Grand Falls		50 ft	Unsatisfactory	Hydroelectric
Canada Falls Lake	Somerset	50 ft	Satisfactory	Hydroelectric
Brassua	Somerset	50 ft	Fair	Hydroelectric
Dundee	Cumberland	50 ft	Satisfactory	Hydroelectric
Woodland	Washington	46 ft	Poor	Hydroelectric
New Dam	York	45 ft	Fair	Hydroelectric
Hanson Brook	Aroostook	45 ft	Fair	Flood Risk Reduction
Bryant Pond	Aroostook	45 ft	Unsatisfactory	Flood Risk Reduction
Mattaceunk	Penobscot	45 ft	Satisfactory	Hydroelectric
Flagstaff	Somerset	45 ft	Satisfactory	Hydroelectric
Graham Lake Dam	Hancock	43 ft	Satisfactory	Hydroelectric
Rumford Falls Upper Dam	Oxford	40 ft	Satisfactory	Hydroelectric
Weston - North Channel	Somerset	38 ft	Satisfactory	Hydroelectric
Scopan	Aroostook	35 ft	Satisfactory	Hydroelectric
North Twin	Penobscot	35 ft	Satisfactory	Hydroelectric
Noyes Mill	Aroostook	32 ft	Satisfactory	Flood Risk Reduction
Josephine	Aroostook	31 ft	Unsatisfactory	Hydroelectric
Christina	Aroostook	30 ft	Poor	Hydroelectric
Silver Lake	Hancock	29 ft	Unsatisfactory	Water Supply
Emery Mills	York	29 ft	Poor	Flood Risk Reduction
North Gorham	Cumberland	28 ft	Satisfactory	Hydroelectric
Hydro-kennebec (old Canal Gatehouse)	Kennebec	28 ft	Satisfactory	Hydroelectric
East Davee Brook	Piscataquis	28 ft	Satisfactory	Flood Risk Reduction
Abbott Brook Dike	Oxford	27 ft	Satisfactory	Hydroelectric
Stone Dam	Penobscot	27 ft	Satisfactory	Hydroelectric
Cherryfield	Washington	25 ft	Fair	Flood Risk Reduction
Grand Lake (matagamon)	Penobscot	25 ft	Poor	Hydroelectric
Upper Dam	Oxford	25 ft	Satisfactory	Hydroelectric
Wilson Pond	Franklin	24 ft	Unsatisfactory	Recreation
American Tissue	Kennebec	24 ft	Satisfactory	Hydroelectric
Seabright	Knox	23 ft	Satisfactory	Hydroelectric
Middle Dam	Oxford	22 ft	Fair	Hydroelectric
Eel Weir	Cumberland	22 ft	Satisfactory	Hydroelectric
New Mills	Kennebec	22 ft	Fair	Hydroelectric
Community Pond	Aroostook	21 ft	Satisfactory	Flood Risk Reduction
Mill Street	York	20 ft	Fair	Recreation
Millinocket Lake	Penobscot	20 ft	Satisfactory	Hydroelectric
Moxie	Somerset	19 ft	Fair	Hydroelectric
Mcdonough Brook	Oxford	19 ft	Fair	Flood Risk Reduction
Dunham Brook	Piscataquis	18 ft	Satisfactory	Flood Risk Reduction
Megunticook East	Knox	18 ft	Poor	Fire Protection, Stock, Or Small Fish Pond
Snow's Pond Dike	Piscataquis	18 ft	Satisfactory	Hydroelectric
Lake Auburn	Androscoggin	17 ft	Unsatisfactory	Fish and Wildlife Pond
Toddy Pond	Hancock	16 ft	Unsatisfactory	Flood Risk Reduction
Appalachee Pond	Lincoln	16 ft	Unsatisfactory	Recreation
Mantle Lake	Aroostook	16 ft	Fair	Flood Risk Reduction
Sebec	Piscataquis	15 ft	Satisfactory	Hydroelectric
Alamoosook Lake	Hancock	15 ft	Unsatisfactory	Recreation
Estes Bog # 5	Androscoggin	15 ft	Fair	Hydroelectric
Howard Pond	Oxford	14 ft	Poor	Other
Wassookeag Lake	Penobscot	14 ft	Satisfactory	Flood Risk Reduction
Megunticook West	Knox	14 ft	Poor	Fire Protection, Stock, Or Small Fish Pond
Messalonskee Lake	Kennebec	14 ft	Satisfactory	Hydroelectric
North Twin - Dike 6	Piscataquis	13 ft	Satisfactory	Hydroelectric
North Auburn	Androscoggin	12 ft	Unsatisfactory	Water Supply
Lower West Bay Pond	Hancock	12 ft	Poor	Recreation
Wesserunsett	Somerset	11 ft	Satisfactory	Flood Risk Reduction
Stone Dam - Dike 8	Penobscot	9 ft	Satisfactory	Hydroelectric