Tailings Dams in Ohio

Ohio has 78 tailings dams, of which 15 carry a high hazard classification. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted.

#	Dam	County	Height (ft)	Hazard	Condition	Year
1	The Ohio Valley Coal Slurry Disposal Dam	Belmont	275	High	Not Rated	1981
2	Cardinal Fly Ash No. 2 Dam	Jefferson	250	High	Satisfactory	2014
3	Cardinal Fly Ash No. 1 Dam	Jefferson	242	High	Satisfactory	1974
4	Muskingum River Upper Fly Ash Dam	Washington	152	High	Fair	1975
5	Meigs Mine No. 1 Slurry Impoundment	Meigs	131	High	Not Rated
6	Sands Hill Slurry Impoundment Dam	Vinton	131	High	Not Rated	1992
7	Eramet Waste Retention Dam	Washington	118	High	Satisfactory	1982
8	Refuse Imp. (sands Hill Reservoir)	Vinton	100	High	Not Available
9	Muskingum River Middle Fly Ash Dam	Washington	100	High	Satisfactory	1968
10	Stingy Run Fly Ash Dam	Gallia	93	High	Satisfactory	1974
11	Killen Station Ash Disposal Dike	Adams	84	High	Fair	1982
12	Muskingum River Lower Fly Ash Dam	Washington	75	High	Fair	1968
13	Dickerson Slurry No. 3 Dam	Harrison	54	Significant	Not Rated	1982
14	Beckjord Ash Pond C Dam	Clermont	50	Significant	Satisfactory
15	Basin `a'	Hamilton	50	Significant	Poor	1976
16	Basin `b'	Hamilton	50	Significant	Poor	1981
17	Broken Aro Slurry Pond No. 1 Dam	Coshocton	49	Significant	Poor	1962
18	Brushy Fork No. 7 Dam	Harrison	47	Significant	Poor	1950
19	Beckjord Ash Pond B	Clermont	46	Significant	Satisfactory
20	Scioto County Sludge Lagoon	Scioto	46	Significant	Fair	1980
21	Jm Stuart Station Ash Pond No. 5	Adams	41	Significant	Poor
22	Kyger Creek Bottom Ash Pond	Gallia	41	Significant	Fair	1955
23	Elkem Fluid Waste Pond 3a	Ashtabula	40	Significant	Fair	1967
24	Beckjord Ash Pond C Ext. Dam	Clermont	40	Significant	Fair	1985
25	Kyger Creek South Fly Ash Pond	Gallia	40	Significant	Satisfactory	1955
26	Seneca Lake Peninsula Dmra Pond Dam	Noble	40	Undetermined	Not Rated	2020
27	Jm Stuart Station Ash Pond No. 7	Adams	39	Significant	Poor
28	Conesville Plant Ash Pond Complex	Coshocton	35	Significant	Poor
29	Eramet Fluid Waste Pond 1a	Washington	35	Significant	Poor	1975
30	Waterloo Coal Double-cell Slurry Dam	Jackson	34	Significant	Poor	1981
31	Stark Lime Sludge Lagoon	Stark	34	Significant	Poor
32	Collins Park Wtp Sludge Lagoon E	Lucas	33	Significant	Satisfactory	1987
33	Kyger Creek Tailings Pond	Gallia	32	Significant	Fair	1955
34	Simco-peabody Sediment Pond E-1 Dam	Muskingum	32	Undetermined	Not Rated	1982
35	Jm Stuart Station Ash Pond No. 6	Adams	31	Significant	Poor
36	General Motors Secondary Lagoon	Defiance	29	Significant	Poor
37	Parsons Avenue Sludge Lagoons	Franklin	28	Significant	Satisfactory	1978
38	Twelve Pack Lake Dam	Tuscarawas	28	Low	Poor	1985
39	St. Henry Wwt Lagoon	Mercer	27	Significant	Satisfactory	1988
40	South Vienna Wwt Lagoons	Clark	26	Significant	Fair	1992
41	Gavin Bottom Ash Pond	Gallia	26	High	Satisfactory	1974
42	Coldwater Wastewater Treatment Dam	Mercer	26	Significant	Satisfactory	1991
43	Shugert Lane Dam	Guernsey	25	Significant	Satisfactory
44	Wadsworth Sludge Lagoon	Medina	25	Significant	Fair	1990
45	Eramet Slag Tailings Pond	Washington	25	Significant	Poor	1975
46	Marathon Brine Pond Dam	Stark	23	High	Satisfactory	2008
47	Georgetown Upper Pond No. 2 Dam	Harrison	22	Low	Poor	1978
48	Neutralized Water Impoundment 2	Knox	22	Significant	Fair	1989
49	Zimmer Waste Water Pond Complex Dam	Clermont	21	Significant	Fair	1989
50	Sammis Station North Bottom Ash Pond Dam	Jefferson	21	Significant	Satisfactory
51	Collins Park Wtp Sludge Lagoons B & C	Lucas	21	High	Fair	1987
52	Elkem Sludge Holding Pond 5c Dam	Ashtabula	20	Significant	Fair	1988
53	Lower East Fork Equalization Basin	Clermont	20	Significant	Satisfactory	1992
54	Cardinal Plant Ash Pond Dam	Jefferson	20	Significant	Fair	1974
55	Neutralized Water Impoundment 3	Knox	20	Significant	Fair	1997
56	Genon Energy North Pond Dam	Trumbull	20	Significant	Satisfactory	1955
57	Graymont Sludge Lagoons	Ottawa	18	Significant	Fair	1981
58	Montezuma/club Island Wwt Lagoons	Mercer	17	Significant	Fair	1985
59	Village Of Amanda Dam	Fairfield	16	Significant	Satisfactory	1992
60	Sidney Lime Sludge Lagoon	Shelby	16	Significant	Fair	1978
61	Fayette Sewage Lagoons	Fulton	15	Significant	Fair	1963
62	New Vienna Wastewater Treatment Lagoons	Clinton	14	Significant	Fair	1987
63	Hap Cremean Lagoon #1	Franklin	14	Significant	Satisfactory	2011
64	Pixelle Upground Reservoir	Ross	14	Significant	Poor
65	Genon Energy South Pond Dam	Trumbull	14	Significant	Satisfactory
66	St. Marys Lime Sludge Lagoons	Auglaize	13	Significant	Satisfactory	1988
67	Waynoka Wwt Lagoon	Brown	13	Significant	Satisfactory	1995
68	Ansonia Sewage Lagoon I	Darke	12	Significant	Fair	1970
69	Hap Cremean Lagoon #2	Franklin	12	Significant	Satisfactory	2010
70	Collins Park Wtp Sludge Lagoon A	Lucas	12	Significant	Satisfactory	1954
71	Hamilton Lime Sludge Lagoon	Butler	11	Significant	Fair	1992
72	Plymouth Wastewater Lagoon	Huron	10	Significant	Satisfactory	1966
73	Larue Wastewater Treatment Lagoon	Marion	10	Significant	Satisfactory	2001
74	Edison Wwt Lagoon	Morrow	10	Significant	Satisfactory	2000
75	Genoa Ug Sewage Disposal Lgn Cells 1,2,3&4	Ottawa	10	Significant	Satisfactory	1963
76	Oakwood Wwt Lagoon	Paulding	10	Significant	Fair	1995
77	Refinery Upground West Reservoir	Allen	9	Significant	Satisfactory	1968
78	Cygnet Wwt Lagoon	Wood	9	Significant	Satisfactory	1994

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