Matherville Lagoons Dam is an earth dam located in Mercer County, Illinois. It carries a Significant hazard potential classification.
Dam profile
NID height · 9 ft9 ft tall. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Matherville Lagoons Dam
Matherville Lagoons Dam is a dam in Mercer, Illinois. The dam is owned by Village of Matherville (local government). It impounds the Edwards River - Offstream.
The dam stands 9 feet tall, and has a maximum storage capacity of 120 acre-feet.
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 01/01/2023.
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Location
| State | Illinois |
| County | Mercer |
| River/Stream | Edwards River - Offstream |
| Coordinates | 41.24292, -90.61528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 9 ft |
| Dam Height | 9 ft |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Normal Storage | 100 acre-ft |
| Spillway Type | None |
Ownership & Safety
| Purpose | Other |
| Owner | Village of Matherville |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 01/01/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50659 |
| Federal ID | IL50659 |
| More Info | State Dam Safety Program |