Orchard Lake Galena Boulevard Dam is an earth dam located in Kane County, Illinois. It carries a Low hazard potential classification.
Dam profile
NID height · 11 ft11 ft tall and 250 ft long. 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 Orchard Lake Galena Boulevard Dam
The primary purpose of Orchard Lake Galena Boulevard 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 Aurora/galena & Constitution P (private). It impounds the Trib Blackberry Creek near Aurora.
The dam stands 11 feet tall and stretches 250 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 157 acre-feet, and collects water from a drainage area of 2 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 12/23/2024.
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Location
| State | Illinois |
| County | Kane |
| Nearest City | Aurora |
| River/Stream | Trib Blackberry Creek |
| Coordinates | 41.76552, -88.37453 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 250 ft |
Storage & Hydraulics
| NID Storage | 157 acre-ft |
| Max Storage | 157 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 415 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Aurora/galena & Constitution P |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/23/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL55124 |
| Federal ID | IL55124 |
| More Info | State Dam Safety Program |