Est. Total Annual Maintenance
$11.2B/yr
Est. Total Removal Cost
$342.4B
Filter by Tier
Legend
Critical — score ≥ 8 (multiple severe factors)
High — score 6-7 (2+ significant factors)
Elevated — score 4-5 (at least one major factor)
Risk factors: structural condition, hazard class, enforcement status, obsolete purpose, missing EAP, inspection gaps, dam age.
Costs: USACE & American Rivers benchmarks scaled by height, storage, hazard class, and condition. Tailings dams carry 3.5× hazmat multiplier.
Map shows top 10,000 highest-scoring dams.
Made by Charlotte Rice
Find Dams Near You
50 mi
0
dams found within radius
Browse by State
Alabama251100
Alaska530
Arizona36150
Arkansas38680
California102590
Colorado66610
Connecticut111710
Delaware16100
Florida44350
Georgia200680
Hawaii96160
Idaho40250
Illinois17120
Indiana2542020
Iowa1360
Kansas108490
Kentucky1141560
Louisiana20400
Maine50260
Maryland84280
Massachusetts1891500
Michigan97410
Minnesota29570
Mississippi2281260
Missouri941190
Montana62520
Nebraska131680
Nevada29500
New Hampshire89350
New Jersey193490
New Mexico131600
New York2381190
North Carolina7106550
North Dakota3050
Ohio2742560
Oklahoma69640
Oregon32220
Pennsylvania2301040
Puerto Rico930
Rhode Island112320
South Carolina3794770
South Dakota49160
Tennessee8130
Texas3462650
Utah16230
Vermont90460
Virginia118700
Washington89800
West Virginia66470
Wisconsin81620
Wyoming231120
Cost-Effective Removal
Dams where removing now saves money vs. continued maintenance. Pick a time horizon: