Zimmerman Dam is an earth dam located in Sioux County, Nebraska, built in 1904. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 580 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 Zimmerman Dam
The primary purpose of Zimmerman Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Zimmerman Trust (private). It impounds the Tr-hat Creek near Ardmore Sd.
The dam stands 14 feet tall and stretches 580 feet across, creates a reservoir covering 9 acres, and has a maximum storage capacity of 59 acre-feet. Completed in 1904, 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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/05/2023.
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Location
| State | Nebraska |
| County | Sioux |
| Nearest City | Ardmore Sd |
| River/Stream | Tr-hat Creek |
| Coordinates | 42.80665, -103.78418 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 580 ft |
| Year Completed | 1904 (122 years old) |
Storage & Hydraulics
| NID Storage | 59 acre-ft |
| Max Storage | 59 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 9 acres |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Zimmerman Trust |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/05/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01112 |
| Federal ID | NE01112 |
| More Info | State Dam Safety Program |