Old Plank Park Basin Dam
Old Plank Park Basin Dam is a concrete dam located in DuPage County, Illinois. It carries a Low hazard potential classification.
About Old Plank Park Basin Dam
The primary purpose of Old Plank Park Basin 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 City Of Naperville (local government). It impounds the Steeple Run near Naperville.
The dam stands 10 feet tall and stretches 350 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 1 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 12/06/2023.
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Location
| State | Illinois |
| County | DuPage |
| Nearest City | Naperville |
| River/Stream | Steeple Run |
| Coordinates | 41.78086, -88.12982 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 350 ft |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 870 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF NAPERVILLE |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Available |
| Last Inspection | 12/06/2023 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL55145 |
| Federal ID | IL55145 |
| More Info | State Dam Safety Program |