Cook Dam is an earth dam located in Rock County, Nebraska, built in 1951. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 525 ft long, taller than 68% 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 Cook Dam
The primary purpose of Cook Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Shirley Focken (private). It impounds the Tr-niobrara River near Niobrara.
The dam stands 30 feet tall and stretches 525 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 22 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, 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. 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 04/21/2021.
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Location
| State | Nebraska |
| County | Rock |
| Nearest City | Niobrara |
| River/Stream | Tr-niobrara River |
| Coordinates | 42.78076, -99.30872 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 28 ft |
| Dam Length | 525 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Normal Storage | 13 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 620 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Shirley Focken |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/21/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00377 |
| Federal ID | NE00377 |
| More Info | State Dam Safety Program |