Olson Dam 1529
Olson Dam 1529 is an earth dam located in Polk County, Nebraska, built in 1975. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Olson Dam 1529
The primary purpose of Olson Dam 1529 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Twogood Land, Llc (private). It impounds the Tr-big Blue River near Surprise.
The dam stands 25 feet tall and stretches 311 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 146 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/16/2019.
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Location
| State | Nebraska |
| County | Polk |
| Nearest City | Surprise |
| River/Stream | Tr-big Blue River |
| Coordinates | 41.09324, -97.58004 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 23 ft |
| Dam Length | 311 ft |
| Year Completed | 1975 (51 years old) |
Storage & Hydraulics
| NID Storage | 146 acre-ft |
| Max Storage | 146 acre-ft |
| Normal Storage | 76 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 255 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Twogood Land, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/16/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01529 |
| Federal ID | NE01529 |
| More Info | State Dam Safety Program |