93Total Dams
9High Hazard
52Significant
Dam Safety in Hillsborough, Florida
Hillsborough has 93 dams tracked in the National Inventory of Dams. Of these, 9 are classified as high hazard — meaning failure would probably cause loss of human life. Another 52 carry a significant hazard classification. Currently, 1 dam has a condition assessment of poor or unsatisfactory.
The average dam in Hillsborough is 50 years old. The most common purpose is tailings. The tallest dam is Temple Terrace Cell D at 110 ft.
Explore more: Oldest dams in Florida · Tallest dams · High risk dams · Largest reservoirs
| Dam | Hazard | Condition | Height (ft) | Purpose | Year |
|---|---|---|---|---|---|
| C.w. "bill" Young Reservoir | High | Not assessed | 90 | Water Supply | 2005 |
| S-155/l-112 | High | Not assessed | 66 | Flood Risk Reduction | 1981 |
| S-161 | High | Satisfactory | 64 | Water Supply | 1975 |
| Edward Medard Reservoir Dam | High | Satisfactory | 42 | Flood Risk Reduction | 1977 |
| S-159 Upper | High | Satisfactory | 38 | Flood Risk Reduction | 1980 |
| Hillsborough County Dam | High | Satisfactory | 37 | Water Supply | 1945 |
| S-163 | High | Satisfactory | 33 | Flood Risk Reduction | 1972 |
| Shadow Run Dam | High | Satisfactory | 30 | Recreation | 1969 |
| Flint Creek Structure | High | Fair | 7 | Flood Risk Reduction | 1975 |
| Temple Terrace Cell D | Significant | Not assessed | 110 | Tailings | 1970 |
| Temple Terrace (sw) | Significant | Not assessed | 108 | Tailings | |
| Gibsonton (sw2) | Significant | Not assessed | 105 | Tailings | |
| Gibsonton (ne) | Significant | Not assessed | 105 | Tailings | |
| Gibsonton (sw1) | Significant | Not assessed | 105 | Tailings | |
| Main Stack | Significant | Not assessed | 103 | Tailings | 1989 |
| Temple Terrace Cell E | Significant | Not assessed | 80 | Tailings | 1970 |
| Temple Terrace Cell G | Significant | Not assessed | 80 | Tailings | 1975 |
| Plant City Cooling Pond | Significant | Not assessed | 65 | Tailings | 1990 |
| Temple Terrace (ne) a | Significant | Not assessed | 65 | Tailings | 1984 |
| Temple Terrace (se) Gypstack | Significant | Not assessed | 65 | Tailings | 1984 |
| Mosaic Csa F5 | Significant | Not assessed | 62 | Tailings | 2005 |
| Mosaic Csa F4b | Significant | Not assessed | 62 | Tailings | 2004 |
| Mosaic Csa F4a | Significant | Not assessed | 62 | Tailings | 2003 |
| Mosaic Csa Fc2c | Significant | Not assessed | 57 | Tailings | 1993 |
| Mosaic Csa F2c | Significant | Not assessed | 57 | Tailings | 1994 |
| Mosaic Csa F2d | Significant | Not assessed | 57 | Tailings | 1996 |
| Mosaic Csa F2b | Significant | Not assessed | 57 | Tailings | 1993 |
| Mosaic Csa Bf3 | Significant | Not assessed | 52 | Tailings | 1984 |
| Mosaic Csa F2a | Significant | Not assessed | 42 | Tailings | 1986 |
| Mosaic Csa Bf4 | Significant | Not assessed | 42 | Tailings | 1991 |
| Hopewell Csa-hl-4 | Significant | Not assessed | 39 | Tailings | 2004 |
| Hopewell Csa-hl1 | Significant | Not assessed | 37 | Tailings | 1982 |
| Mosaic Csa Bf2 | Significant | Not assessed | 37 | Tailings | 1980 |
| Hopewell Csa Hl3 | Significant | Not assessed | 34 | Tailings | 1997 |
| Gibsonton (w) | Significant | Not assessed | 30 | Tailings | 1989 |
| Gibsonton (s) | Significant | Not assessed | 30 | Tailings | 1989 |
| Gibsonton (se) | Significant | Not assessed | 30 | Tailings | 1989 |
| S-162 | Significant | Not assessed | 27 | Water Supply | 1975 |
| Kingsford Csa Dl | Significant | Not assessed | 27 | Tailings | 1971 |
| Temple Terrace (s) Recircle | Significant | Not assessed | 25 | Tailings | 2001 |
| Kingsford Csa Cl | Significant | Not assessed | 22 | Tailings | 1970 |
| Kingsford Csa El | Significant | Not assessed | 22 | Tailings | 1920 |
| White Trout Water Conservation Structure | Significant | Fair | 17 | Flood Risk Reduction | |
| Cfi Plant City 10 | Significant | Not assessed | 17 | Tailings | 2001 |
| Gibsonton (nw) | Significant | Not assessed | 16 | Tailings | |
| Boyette Sa-5 | Significant | Not assessed | 15 | Tailings | 1966 |
| Peace River | Significant | Not assessed | 14 | Tailings | 1945 |
| Borden Holding Pond No 2 | Significant | Not assessed | 13 | Tailings | 1960 |
| Middle Lake Dam | Significant | Fair | 12 | Recreation | |
| Coronet No. 6 | Significant | Not assessed | 11 | Tailings | 1930 |
| Bay Lake Water Conservation Structure | Significant | Fair | 11 | Flood Risk Reduction | 1987 |
| Simmons Lake | Significant | Fair | 10 | Recreation | |
| Coronet No. 4 | Significant | Not assessed | 10 | Tailings | 1930 |
| North Lake Dam | Significant | Fair | 9 | Recreation | |
| Lake Armistead | Significant | Fair | 7 | Flood Risk Reduction | 1972 |
| Keene Lake Water Conservation Structure #2 | Significant | Fair | 7 | Flood Risk Reduction | |
| Hl2 | Significant | Not assessed | 6 | Tailings | |
| K-8 | Significant | Not assessed | 6 | Tailings | |
| Keystone Lake Water Conservation Structure | Significant | Fair | 6 | Flood Risk Reduction | |
| Lake Pretty Water Conservation Structure | Significant | Fair | 5 | Flood Risk Reduction | |
| Swfwmd Magdalene Control Structure #3 | Significant | Fair | 2 | Flood Risk Reduction | |
| Gypsum Field Dike | Low | Not assessed | 100 | Tailings | 1974 |
| Coronet No. 3 | Low | Not assessed | 97 | Other | 1930 |
| S-160 | Low | Not assessed | 62 | Flood Risk Reduction | 1968 |
| Big Four Mine Bf-1 | Low | Not assessed | 40 | Tailings | 1977 |
| Dredged Spoil Retention Area C | Low | Not assessed | 36 | Other | 1978 |
| Area a | Low | Not assessed | 35 | Tailings | 1967 |
| Clay Settling Area Bl | Low | Not assessed | 27 | Tailings | 1979 |
| Clay Settling Area Al | Low | Not assessed | 27 | Tailings | 1976 |
| Lonesome Cleaner Water Pond | Low | Not assessed | 23 | Tailings | 1976 |
| Lonesome Plant Drainage Pond | Low | Not assessed | 23 | Tailings | 1976 |
| Lonesome Rougher Water Pond | Low | Not assessed | 22 | Tailings | 1976 |
| South Hopewell Eleanor Area | Low | Not assessed | 20 | Tailings | 1950 |
| Cooling Pond Perimeter Dike | Low | Not assessed | 20 | Tailings | 1995 |
| 32acre Cooling Pond | Low | Not assessed | 15 | Tailings | 1960 |
| Unnamed Dam | Low | Poor | 13 | Irrigation | |
| Coronet No. 4a | Low | Not assessed | 11 | Other | 1930 |
| Coronet No. 5 | Low | Not assessed | 10 | Tailings | 1930 |
| Salt Water Cooling Pond Dam | Low | Not assessed | 9 | Tailings | 1973 |
| Hil21 | Undetermined | Not assessed | 51 | Tailings | |
| Hil8 | Undetermined | Not assessed | 44 | Tailings | |
| Hil12 | Undetermined | Not assessed | 32 | Tailings | |
| Hil19 | Undetermined | Not assessed | 20 | Tailings | |
| Hil16 | Undetermined | Not assessed | 18 | Tailings | |
| Hil13 | Undetermined | Not assessed | 16 | Tailings | |
| Hil10 | Undetermined | Not assessed | 14 | Tailings | |
| Hil11 | Undetermined | Not assessed | 13 | Tailings | |
| Hil7 | Undetermined | Not assessed | 13 | Tailings | |
| Hil18 | Undetermined | Not assessed | 12 | Tailings | |
| Hil20 | Undetermined | Not assessed | 8 | Tailings | |
| Hil17 | Undetermined | Not assessed | 8 | Tailings | |
| Hil410 | Undetermined | Not assessed | 7 | Tailings | |
| Hil14 | Undetermined | Not assessed | 6 | Tailings |