Oldest Dams in Indiana
Indiana has 964 dams with recorded construction dates. The oldest dates to 1827 — 199 years ago. Indiana's earliest dams were built in the 19th century, an era of westward expansion, irrigation development, and early water infrastructure. Older dams require particular attention for safety, as many were built before modern engineering standards.
| # | Dam | County | Year Built | Age | Height (ft) | Hazard | Condition |
|---|---|---|---|---|---|---|---|
| 1 | Lake Manitou Dam | Fulton | 1827 | 199 yrs | 10 | Significant | Poor |
| 2 | Broad Ripple Dam (in-channel) | Marion | 1830 | 196 yrs | 10 | Low | Poor |
| 3 | Hamilton Lake-north Dam | Steuben | 1832 | 194 yrs | 16 | High | Fair |
| 4 | Hamilton Lake-south Dam | Steuben | 1832 | 194 yrs | 21 | High | Poor |
| 5 | Camp Red Mill Lake Dam | LaPorte | 1833 | 193 yrs | 21 | Significant | Unsatisfactory |
| 6 | Ball Band Dam (in-channel) | St. Joseph | 1834 | 192 yrs | 10 | Low | Fair |
| 7 | Webster Lake Dam - West | Kosciusko | 1835 | 191 yrs | 7 | High | Poor |
| 8 | Webster Lake Dam - East | Kosciusko | 1835 | 191 yrs | 12 | High | Poor |
| 9 | Greenfield Mills Dam | LaGrange | 1835 | 191 yrs | 27 | Significant | Poor |
| 10 | Palestine Lake Dam | Kosciusko | 1837 | 189 yrs | 10 | Significant | Poor |
| 11 | Sylvan Lake Dam | Noble | 1839 | 187 yrs | 30 | High | Fair |
| 12 | Cliff Pettit Dam | LaGrange | 1845 | 181 yrs | 8 | Significant | Unsatisfactory |
| 13 | Lake George Dam | Lake | 1846 | 180 yrs | 22 | High | Poor |
| 14 | Koontz Lake Dam | Starke | 1849 | 177 yrs | 24 | High | Satisfactory |
| 15 | South Bend | St. Joseph | 1850 | 176 yrs | 12 | Low | Satisfactory |
| 16 | Goshen Pond Dam | Elkhart | 1868 | 158 yrs | 48 | High | Fair |
| 17 | Thompson Mill Dam (in-channel) | Johnson | 1884 | 142 yrs | 10 | Low | Fair |
| 18 | Lake Of The Woods Dam | Porter | 1890 | 136 yrs | 20 | Significant | Unsatisfactory |
| 19 | White River Dam (in-channel) | Marion | 1893 | 133 yrs | 18 | Low | Fair |
| 20 | Lake Mccoy Dam | Decatur | 1900 | 126 yrs | 24 | Significant | Poor |
| 21 | Hickory Lake | Sullivan | 1902 | 124 yrs | 24 | Significant | Poor |
| 22 | Elkhart | Elkhart | 1903 | 123 yrs | 25 | High | Poor |
| 23 | Twin Branch | St. Joseph | 1903 | 123 yrs | 41 | High | Poor |
| 24 | Williams Dam (in-channel) | Lawrence | 1910 | 116 yrs | 15 | Low | Not Rated |
| 25 | University Lake Dam | Monroe | 1910 | 116 yrs | 34 | Low | Poor |
| 26 | Papakeechie Lake | Kosciusko | 1913 | 113 yrs | 10 | High | Poor |
| 27 | Ferdinand Old Water Supply Dam | Dubois | 1915 | 111 yrs | 29 | Significant | Fair |
| 28 | Monon Reservoir Dam | Greene | 1915 | 111 yrs | 20 | Low | Poor |
| 29 | Oser Reservoir Dam | Ripley | 1915 | 111 yrs | 22 | Significant | Poor |
| 30 | Hulman Lodge Dam | Vigo | 1915 | 111 yrs | 19 | High | Fair |
| 31 | Raysville Dam | Henry | 1920 | 106 yrs | 23 | Undetermined | Unsatisfactory |
| 32 | Mongo Reservoir Dam | LaGrange | 1920 | 106 yrs | 17 | Low | Poor |
| 33 | Ontario Millpond Dam | LaGrange | 1920 | 106 yrs | 16 | Significant | Poor |
| 34 | Union Mills Dam | LaPorte | 1920 | 106 yrs | 12 | Significant | Poor |
| 35 | Norway | White | 1923 | 103 yrs | 40 | High | Satisfactory |
| 36 | Griffy Reservoir Dam | Monroe | 1924 | 102 yrs | 44 | High | Fair |
| 37 | Hosey (maumee River) Dam (in-channel) | Allen | 1925 | 101 yrs | 10 | Low | Fair |
| 38 | Oakdale | Carroll | 1925 | 101 yrs | 64 | High | Fair |
| 39 | Lake In The Woods Dam | Clay | 1925 | 101 yrs | 18 | Significant | Poor |
| 40 | Izaak Walton Lakes Dam North | Dubois | 1925 | 101 yrs | 24 | Low | Poor |
| 41 | Nasby Lake Dam | LaGrange | 1925 | 101 yrs | 17 | Low | Poor |
| 42 | Camp Carson Lake Dam | Gibson | 1926 | 100 yrs | 24 | Low | Poor |
| 43 | Traders Point Lake Dam | Marion | 1927 | 99 yrs | 18 | Low | Poor |
| 44 | Lake George Dam | Steuben | 1927 | 99 yrs | 15 | High | Poor |
| 45 | Indian Lake Dam | Marion | 1928 | 98 yrs | 26 | Significant | Poor |
| 46 | Milan Lake Dam | Ripley | 1928 | 98 yrs | 25 | Significant | Fair |
| 47 | Star Mill Dam | LaGrange | 1929 | 97 yrs | 9 | Low | Not Rated |
| 48 | Lake Dalecarlia Dam (west) | Lake | 1929 | 97 yrs | 13 | High | Poor |
| 49 | Lake Dalecarlia Dam (east) | Lake | 1929 | 97 yrs | 14 | High | Poor |
| 50 | Roc-mar-ton Lake Dam | Madison | 1929 | 97 yrs | 21 | High | Poor |