Harold Arnold
Harold Arnold is an earth dam located in Corson County, South Dakota, built in 1950. It carries a Low hazard potential classification.
About Harold Arnold
The primary purpose of Harold Arnold is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Harold Arnold (private). It impounds the Tr-grand near Bullhead.
The dam stands 21 feet tall and stretches 450 feet across, and has a maximum storage capacity of 210 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.
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Location
| State | South Dakota |
| County | Corson |
| Nearest City | Bullhead |
| River/Stream | Tr-grand |
| Coordinates | 45.69499, -101.34499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 450 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 210 acre-ft |
| Max Storage | 210 acre-ft |
| Normal Storage | 86 acre-ft |
| Max Discharge | 4,312 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | HAROLD ARNOLD |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00746 |
| Federal ID | SD00746 |
| More Info | State Dam Safety Program |