Waterloo Reservoir 2 Dam
Waterloo Reservoir 2 Dam is an earth dam located in Monroe County, Illinois, built in 1950. It carries a Significant hazard potential classification.
About Waterloo Reservoir 2 Dam
The primary purpose of Waterloo Reservoir 2 Dam is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Waterloo (local government). It impounds the Trib Fountain Creek near Waterloo-offstream.
The dam stands 19 feet tall and stretches 400 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 110 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
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 11/01/2024.
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Location
| State | Illinois |
| County | Monroe |
| Nearest City | Waterloo-offstream |
| River/Stream | Trib Fountain Creek |
| Coordinates | 38.31785, -90.16428 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 19 ft |
| Dam Height | 19 ft |
| Dam Length | 400 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 110 acre-ft |
| Max Storage | 110 acre-ft |
| Normal Storage | 61 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 310 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | CITY OF WATERLOO |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Available |
| Last Inspection | 11/01/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL00952 |
| Federal ID | IL00952 |
| More Info | State Dam Safety Program |