Norris Lake Dam is an earth dam located in Henderson County, Illinois, built in 1948. It carries a Significant hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 348 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 Norris Lake Dam
Norris Lake Dam is a dam in Henderson, Illinois. The dam is owned by Halsey Norris Trust (private). It impounds the Trib South Henderson Creek near Biggsville.
The dam stands 21 feet tall and stretches 348 feet across, and has a maximum storage capacity of 59 acre-feet. Completed in 1948, 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. The most recent inspection on record was 05/25/2024.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Illinois |
| County | Henderson |
| Nearest City | Biggsville |
| River/Stream | Trib South Henderson Creek |
| Coordinates | 40.84436, -90.83191 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 348 ft |
| Year Completed | 1948 (78 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 28 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Halsey Norris Trust |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/25/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00414 |
| Federal ID | IL00414 |
| More Info | State Dam Safety Program |