Jacoby Pond Dam 1 is an earth dam located in Macoupin County, Illinois, built in 1975. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 500 ft long, taller than 86% 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 Jacoby Pond Dam 1
Jacoby Pond Dam 1 is a dam in Macoupin, Illinois. The dam is owned by Fred Jacoby;fred Jacoby (private). It impounds the Tr- Hodges Creek N near Jalapa.
The dam stands 40 feet tall and stretches 500 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 270 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1975, the structure is well into its service life at over 50 years 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 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Illinois |
| County | Macoupin |
| Nearest City | Jalapa |
| River/Stream | Tr- Hodges Creek N |
| Coordinates | 39.29715, -90.09144 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 500 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 270 acre-ft |
| Max Storage | 270 acre-ft |
| Normal Storage | 205 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 770 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Fred Jacoby;fred Jacoby |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/10/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | IL40092 |
| Federal ID | IL40092 |
| More Info | State Dam Safety Program |