Hanson No. 1
Hanson No. 1 is an earth dam located in Haakon County, South Dakota, built in 1994. It carries a Low hazard potential classification.
About Hanson No. 1
The primary purpose of Hanson No. 1 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 Henry Hanson (private). It impounds the Haxby Draw.
The dam stands 21 feet tall and stretches 400 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1994, the structure is 32 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.
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Location
| State | South Dakota |
| County | Haakon |
| River/Stream | Haxby Draw |
| Coordinates | 44.38461, -101.83308 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 400 ft |
| Year Completed | 1994 (32 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 142 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,900 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | HENRY HANSON |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02394 |
| Federal ID | SD02394 |
| More Info | State Dam Safety Program |