Wildwood Lake Estates Dam is an earth dam located in St. Clair County, Illinois, built in 1982. It carries a Significant hazard potential classification.
Dam profile
NID height · 35 ft35 ft tall and 785 ft long, taller than 80% 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 embankment section and the water level is illustrative.
About Wildwood Lake Estates Dam
The primary purpose of Wildwood Lake Estates Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Wildwood Lake Estates Association (private). It impounds the Trib West Fork Richland Creek near Hecker.
The dam stands 35 feet tall and stretches 785 feet across, and has a maximum storage capacity of 1,279 acre-feet. Completed in 1982, the structure is 44 years old.
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 04/11/2024.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Illinois |
| County | St. Clair |
| Nearest City | Hecker |
| River/Stream | Trib West Fork Richland Creek |
| Coordinates | 38.37155, -90.00068 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 785 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 1,279 acre-ft |
| Max Storage | 1,279 acre-ft |
| Normal Storage | 856 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Wildwood Lake Estates Association |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 04/11/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50435 |
| Federal ID | IL50435 |
| More Info | State Dam Safety Program |