Old Altamont Reservoir Dam is an earth dam located in Effingham County, Illinois, built in 1934. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 414 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 Old Altamont Reservoir Dam
The primary purpose of Old Altamont Reservoir Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Tom Kinst (private). It impounds the Second Creek near Altamont-offstream.
The dam stands 24 feet tall and stretches 414 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 178 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1934, the structure is well-established, with more than 75 years of service.
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 04/08/2024.
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Location
| State | Illinois |
| County | Effingham |
| Nearest City | Altamont-offstream |
| River/Stream | Second Creek |
| Coordinates | 39.07563, -88.71131 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 414 ft |
| Year Completed | 1934 (92 years old) |
Storage & Hydraulics
| NID Storage | 178 acre-ft |
| Max Storage | 178 acre-ft |
| Normal Storage | 95 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 570 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Tom Kinst |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 04/08/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL00605 |
| Federal ID | IL00605 |
| More Info | State Dam Safety Program |