Meacham Grove Main Dam
Meacham Grove Main Dam is an earth dam located in DuPage County, Illinois, built in 1998. It carries a High hazard potential classification.
About Meacham Grove Main Dam
The primary purpose of Meacham Grove Main Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Forest Preserve District Of Dupage Count (local government). It impounds the Spring Brook near Bloomingdale.
The dam stands 11 feet tall and stretches 650 feet across, has a maximum storage capacity of 131 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1998, the structure is 28 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 10/24/2025.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Illinois dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | DuPage |
| Nearest City | Bloomingdale |
| River/Stream | Spring Brook |
| Coordinates | 41.96374, -88.08066 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 650 ft |
| Year Completed | 1998 (28 years old) |
Storage & Hydraulics
| NID Storage | 131 acre-ft |
| Max Storage | 131 acre-ft |
| Drainage Area | 2 sq mi |
| Max Discharge | 5,550 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | FOREST PRESERVE DISTRICT OF DUPAGE COUNT |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 10/24/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | IL50364 |
| Federal ID | IL50364 |
| More Info | State Dam Safety Program |