Hanson No. 2
Hanson No. 2 is an earth dam located in Niobrara County, Wyoming, built in 1950. It carries a Low hazard potential classification and has a fair condition assessment.
About Hanson No. 2
The primary purpose of Hanson No. 2 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Hanson Family Trust Attn: Carolyn Johnson (private). It impounds the Hanson Draw near Edgemont, Sd.
The dam stands 30 feet tall and stretches 377 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 79 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. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 10/10/2022.
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Location
| State | Wyoming |
| County | Niobrara |
| Nearest City | Edgemont, Sd |
| River/Stream | Hanson Draw |
| Coordinates | 43.47160, -104.47350 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 27 ft |
| Dam Length | 377 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 79 acre-ft |
| Max Storage | 79 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 7 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HANSON FAMILY TRUST ATTN: CAROLYN JOHNSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/10/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00801 |
| Federal ID | WY00801 |
| More Info | State Dam Safety Program |