Thrall Unit Flood Project is a dam located in Greenwood County, Kansas, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 990 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 Thrall Unit Flood Project
Thrall Unit Flood Project is a dam in Greenwood, Kansas. The dam is owned by Sinclair Oil & Gas Co (private). It impounds the Swing Creek near Eureka.
The dam stands 30 feet tall and stretches 990 feet across, and has a maximum storage capacity of 230 acre-feet. Completed in 1950, 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 07/01/1950. That was over 76 years ago.
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Location
| State | Kansas |
| County | Greenwood |
| Nearest City | Eureka |
| River/Stream | Swing Creek |
| Coordinates | 38.00295, -96.32905 |
Physical Characteristics
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 990 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 182 acre-ft |
| Max Discharge | 1,800 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Sinclair Oil & Gas Co |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/01/1950 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | KS03519 |
| Federal ID | KS03519 |
| More Info | State Dam Safety Program |