Standard City Lake Dam is an earth dam located in Macoupin County, Illinois, built in 1920. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 683 ft long, taller than 76% 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 Standard City Lake Dam
The primary purpose of Standard City Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Schoper (private). It impounds the Trib Macoupin Creek near Carlinville-offstream.
The dam stands 33 feet tall and stretches 683 feet across, and has a maximum storage capacity of 633 acre-feet. Completed in 1920, the structure is over a century old.
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 05/10/2024.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Illinois |
| County | Macoupin |
| Nearest City | Carlinville-offstream |
| River/Stream | Trib Macoupin Creek |
| Coordinates | 39.33825, -89.78577 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 683 ft |
| Year Completed | 1920 (106 years old) |
Storage & Hydraulics
| NID Storage | 633 acre-ft |
| Max Storage | 633 acre-ft |
| Normal Storage | 445 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Schoper |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/10/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00770 |
| Federal ID | IL00770 |
| More Info | State Dam Safety Program |