Korgan Dam is an earth dam located in Clay County, Nebraska, built in 1982. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 640 ft long, taller than 55% 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 Korgan Dam
The primary purpose of Korgan Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Marilyn E Mcdonald (private). It impounds the Tr-w Fk Big Blue River near Stockham.
The dam stands 26 feet tall and stretches 640 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 134 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1982, the structure is 44 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 05/16/2023.
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Location
| State | Nebraska |
| County | Clay |
| Nearest City | Stockham |
| River/Stream | Tr-w Fk Big Blue River |
| Coordinates | 40.64747, -98.21279 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 21 ft |
| Dam Length | 640 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 134 acre-ft |
| Max Storage | 134 acre-ft |
| Normal Storage | 25 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 185 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Marilyn E Mcdonald |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/16/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00395 |
| Federal ID | NE00395 |
| More Info | State Dam Safety Program |