New York Dams

1,871 dams tracked by the National Inventory of Dams

Total Dams

1,871

High Hazard

419

22.4%

Poor / Unsatisfactory

289

Average Age

89 yrs

Hazard Classification

High419 (22.4%)
Significant544 (29.1%)
Low901 (48.2%)

Condition Assessment

Satisfactory348 (18.6%)
Fair98 (5.2%)
Poor / Unsatisfactory289 (15.4%)
Not Rated1,136 (60.7%)

Federal

26

State

281

Local

506

Private

785

All Dams in New York

Showing 576600 of 1,871

Dam NameHeight (ft)YearHazardCondition
Oriskany Falls Dam

Madison County

151917SignificantPoor
Orchard Park Reservoir Dam

Erie County

221933LowNot Rated
Orchard Lake Dam

Sullivan County

161870SignificantNot Rated
Oquaga Lake Dam

Broome County

7LowNot Rated
Oquaga Creek State Park Dam

Broome County

541976HighPoor
Onteora Pond Dam

Greene County

181924SignificantPoor
Ontario Parks Dam

Ontario County

201966HighNot Rated
Onondaga Dam

Onondaga County

671949HighSatisfactory
Oneida Water Supply Dam

Madison County

181925HighFair
Oneida City Reservoir Dam

Oneida County

501926HighPoor
Oneida #8 Pond Dam #3

Oneida County

191961SignificantNot Rated
Oneida #7 Pond #1 Dam & Dike

Oneida County

111958LowNot Rated
Onderdonk Lake Dam

Albany County

111928SignificantPoor
Olmstedville Pond Dam

Essex County

101934SignificantNot Rated
Old Forge Reservoir Dam

Herkimer County

181905SignificantPoor
Old Fly Wildlife Dam

Onondaga County

91958LowNot Rated
Old Brodhead Lake Dam

Sullivan County

332005LowNot Rated
Ogdensburg

St. Lawrence County

121910HighSatisfactory
Odgen Heights Dam

Monroe County

8SignificantNot Rated
O'Dell Marsh Dam

Erie County

71954LowNot Rated
Oatka Creek Dam

Genesee County

12LowNot Rated
Oatka Creek Dam

Genesee County

151934SignificantNot Rated
Oakridge Land & Property Corp Dam

Westchester County

101981LowNot Rated
Oak Orchard Creek Dam

Orleans County

901917HighSatisfactory
Oakley Swamp Wildlife Pond Dam

Tioga County

81952LowNot Rated
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Data sourced from the National Inventory of Dams (NID). Hazard classification reflects potential consequences of failure, not the likelihood of failure.