Dorchester 3-a
Dorchester 3-a is an earth dam located in Saline County, Nebraska, built in 1966. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Dorchester 3-a
The primary purpose of Dorchester 3-a 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 Upper Big Blue Natural Resources District (local government). It impounds the Tr-w Fk Big Blue River near Crete.
The dam stands 31 feet tall and stretches 892 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 135 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1966, 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 06/03/2021.
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Location
| State | Nebraska |
| County | Saline |
| Nearest City | Crete |
| River/Stream | Tr-w Fk Big Blue River |
| Coordinates | 40.67364, -97.08789 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 29 ft |
| Dam Length | 892 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 135 acre-ft |
| Max Storage | 135 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 292 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Upper Big Blue Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/03/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00036 |
| Federal ID | NE00036 |
| More Info | State Dam Safety Program |