Dams in Delaware
Dam Safety in Delaware
Delaware has 83 dams tracked in the National Inventory of Dams. Of these, 57 (68%) are classified as high hazard — meaning failure would probably cause loss of human life — and 9 are classified as significant hazard. Currently, 4 dams in the state have a condition assessment of poor or unsatisfactory, indicating recognized safety deficiencies.
The average dam in Delaware is 88 years old. Many of these aging structures were built before modern dam safety standards were established, which increases the importance of regular inspections and maintenance. The most common purpose for dams in Delaware is recreation, accounting for 35 of the state's dams.
Use the search above to find dams near any address in Delaware, or browse by county below. Each dam listing includes its hazard potential classification, condition assessment, physical characteristics, and inspection history from the NID.
Delaware Dam Facts
| Total Dams | 83 |
| High Hazard Dams | 57 |
| Average Dam Age | 88 years |
| Tallest Dam | 127 ft |
| Largest Reservoir | 10,000 acre-ft |
| Poor/Unsatisfactory Condition | 4 |
Notable Dams in Delaware
Counties in Delaware
High Hazard Dams in Delaware
| Dam | County | Height | Condition | Purpose |
|---|---|---|---|---|
| Edgar M. Hoopes Dam | New Castle | 127 ft | Satisfactory | Water Supply |
| Newark Reservoir Dam | New Castle | 70 ft | Fair | Water Supply |
| Carousel Pond Dam | New Castle | 36 ft | Satisfactory | Recreation |
| New Castle County Water Farm Wastewater Lagoon | New Castle | 29 ft | Fair | Other |
| Records Pond Dam | Sussex | 25 ft | Satisfactory | Fish and Wildlife Pond |
| Rock Manor Golf Course Dam | New Castle | 24 ft | Fair | Flood Risk Reduction |
| Becks Pond Dam | New Castle | 21 ft | Fair | Fish and Wildlife Pond |
| City Of Wilmington Sewage Lagoon | New Castle | 21 ft | Fair | Other |
| Coursey Pond Dam | Kent | 20 ft | Fair | Fish and Wildlife Pond |
| City Of Wilmington Sludge Disposal Area | New Castle | 20 ft | Fair | Other |
| Horseys Pond Dam | Sussex | 19 ft | Fair | Fish and Wildlife Pond |
| Silver Lake Dam - Middletown | New Castle | 18 ft | Fair | Recreation |
| Haven Lake Dam | Kent | 17 ft | Fair | Fish and Wildlife Pond |
| Silver Lake Dam - Dover | Kent | 17 ft | Fair | Recreation |
| Wagamons Pond Dam | Sussex | 17 ft | Fair | Fish and Wildlife Pond |
| Wiggins Mill Pond Dam | New Castle | 17 ft | Not Rated | Recreation |
| Mcginnis Pond Dam | Kent | 16 ft | Fair | Fish and Wildlife Pond |
| Lake Como Dam | Kent | 15 ft | Fair | Recreation |
| Millsboro Pond Dam | Sussex | 15 ft | Poor | Fish and Wildlife Pond |
| Abbotts Pond Dam | Sussex | 15 ft | Fair | Fish and Wildlife Pond |
| Blairs Pond Dam | Kent | 15 ft | Fair | Fish and Wildlife Pond |
| Bellevue Lake Dam | New Castle | 15 ft | Not Rated | Water Supply |
| Mudmill Pond Dam | Kent | 15 ft | Fair | Fish and Wildlife Pond |
| City Of Laurel Sewage Lagoon | Sussex | 15 ft | Fair | Other |
| Voshell Pond Dam | Kent | 14 ft | Not Rated | Recreation |
| Williams Pond Dam | Sussex | 14 ft | Fair | Recreation |
| Trap Pond Dam | Sussex | 14 ft | Fair | Recreation |
| Concord Pond Dam | Sussex | 14 ft | Fair | Fish and Wildlife Pond |
| Chipman Pond Dam | Sussex | 14 ft | Fair | Fish and Wildlife Pond |
| Hearns Pond Dam | Sussex | 14 ft | Satisfactory | Fish and Wildlife Pond |
| Wyoming Lake Dam | Kent | 13 ft | Fair | Recreation |
| Griffith Lake Dam | Kent | 13 ft | Poor | Fish and Wildlife Pond |
| Betts Pond Main Dam | Sussex | 13 ft | Fair | Recreation |
| Sunset Lake Dam | New Castle | 13 ft | Not Rated | Recreation |
| Edgemoor Reservoir Dam | New Castle | 13 ft | Not Rated | Water Supply |
| Town Of Middletown Wastewater Lagoon | New Castle | 13 ft | Fair | Other |
| City Of Laurel Sewage Lagoon | Sussex | 13 ft | Fair | Other |
| City Of Laurel Sewage Lagoon | Sussex | 13 ft | Fair | Other |
| Silver Lake Dam - Milford | Kent | 13 ft | Fair | Fish and Wildlife Pond |
| Red Mill Pond Dam | Sussex | 12 ft | Fair | Recreation |
| Town Of Selbyville Wastewater Lagoon | Sussex | 12 ft | Fair | Other |
| Ingram Pond Dam | Sussex | 12 ft | Fair | Fish and Wildlife Pond |
| Porter Reservoir Dam | New Castle | 12 ft | Fair | Water Supply |
| Swiggetts Pond Dam | Sussex | 12 ft | Fair | Recreation |
| Reynolds Pond | Sussex | 11 ft | Fair | Recreation |
| Shoals Branch Dam | Sussex | 11 ft | Poor | Recreation |
| Fleetwood Pond Dam | Sussex | 11 ft | Fair | Recreation |
| Garrisons Lake Dam | Kent | 11 ft | Fair | Fish and Wildlife Pond |
| Cubbage Pond Dam | Sussex | 11 ft | Fair | Recreation |
| Clendaniel Pond Dam | Sussex | 10 ft | Not Rated | Recreation |
| Derby Pond Dam | Kent | 10 ft | Fair | Fish and Wildlife Pond |
| Betts Pond Route 113 Dam | Sussex | 10 ft | Fair | Recreation |
| Burton Pond Dam | Sussex | 10 ft | Satisfactory | Recreation |
| Duck Creek Pond Dam | Kent | 9 ft | Not Rated | Recreation |
| Wheatley Pond Dam | Kent | 8 ft | Fair | Recreation |
| Cartanza/ez Farms Dam | Kent | 7 ft | Not Rated | Recreation |
| City Of Harrington Sewage Lagoon | Kent | 6 ft | Fair | Other |