Duck Creek Ash Pond 1 Dam is a rockfill dam located in Fulton County, Illinois. It carries a Significant hazard potential classification.
Dam profile
NID height · 28 ft28 ft tall, taller than 62% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic rockfill embankment section and the water level is illustrative.
About Duck Creek Ash Pond 1 Dam
Duck Creek Ash Pond 1 Dam is a dam in Fulton, Illinois. The dam is owned by Dynegy Midwest Generation (public utility). It impounds the Duck Creek - Offstream.
The dam stands 28 feet tall.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. An emergency action plan is in place for this dam. The most recent inspection on record was 09/15/2025.
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Location
| State | Illinois |
| County | Fulton |
| River/Stream | Duck Creek - Offstream |
| Coordinates | 40.47886, -89.98511 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 28 ft |
| Dam Height | 28 ft |
Ownership & Safety
| Purpose | Other |
| Owner | Dynegy Midwest Generation |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 09/15/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50715 |
| Federal ID | IL50715 |
| More Info | State Dam Safety Program |