Ohio Dams

1,377 dams tracked by the National Inventory of Dams

Total Dams

1,377

High Hazard

397

28.8%

Poor / Unsatisfactory

509

Average Age

65 yrs

Hazard Classification

High397 (28.8%)

Significant564 (41.0%)

Low339 (24.6%)

Condition Assessment

Satisfactory324 (23.5%)

Fair421 (30.6%)

Poor / Unsatisfactory509 (37.0%)

Not Rated123 (8.9%)

Federal

State

115

Local

356

Private

753

Tallest Dams

No. 2 Slurry Pond300 ft
The Ohio Valley Coal Slurry Disposal Dam275 ft
Cardinal Fly Ash No. 2 Dam250 ft
Cardinal Fly Ash No. 1 Dam242 ft
William H. Harsha Dam205 ft

High Hazard Dams

No. 2 Slurry PondHigh
The Ohio Valley Coal Slurry Disposal DamHigh
Cardinal Fly Ash No. 2 DamHigh
Cardinal Fly Ash No. 1 DamHigh
William H. Harsha DamHigh

Poor Condition Dams

All Dams in Ohio

Showing 76–100 of 397

All High Hazard Significant Hazard Low Hazard Poor Fair Satisfactory

Dam Name	Height (ft)	Year	Hazard	Condition
Senecaville Dam Guernsey County	45	1937	High	Not Available
Schloss Pond Dam Geauga County	36	1952	High	Poor
San Toy Dam Perry County	21	1916	High	Poor
Sands Hill Slurry Impoundment Dam Vinton County	131	1992	High	Not Rated
Salt Fork Lake Dam Guernsey County	61	1968	High	Fair
Sally Buffalo Park Lake No. 4 Dam Harrison County	18	1953	High	Poor
Sally Buffalo Park Lake No. 2 Dam Harrison County	13	1953	High	Poor
Sally Buffalo Park Lake Dam Harrison County	37	1953	High	Poor
Salem Reservoir (South Embankment) Columbiana County	48	1952	High	Poor
Rustic Hills Lake Dam Medina County	30	1961	High	Satisfactory
Rush Run Lake Dam Preble County	53	1970	High	Fair
Rushcreek Structure No. Vii-E Fairfield County	28	1967	High	Fair
Rushcreek Structure No. Vii-A Fairfield County	41	1985	High	Satisfactory
Rushcreek Structure No. Vi-D Fairfield County	52	1975	High	Satisfactory
Rushcreek Structure No. Vi-A Fairfield County	58	1982	High	Fair
Rushcreek Structure No. V-C Fairfield County	36	1969	High	Fair
Rushcreek Structure No. Iv-C Perry County	29	1976	High	Fair
Rushcreek Structure No. Iii-C Perry County	36	1977	High	Satisfactory
Rushcreek Structure No. Iii-A Perry County	34	1969	High	Fair
Rushcreek Structure No. Ii Perry County	31	1985	High	Fair
Rush Creek Structure No. 1-B Perry County	45	1975	High	Fair
Ross Trails Lake Dam Butler County	48	1960	High	Satisfactory
Ross Lake Dam Ross County	48	1967	High	Poor
Roosevelt Lake Dam Scioto County	26	1934	High	Satisfactory
Rocky Fork Lake Dam Highland County	74	1952	High	Poor

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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.