Dunn Road Dam is an earth dam located in Harding County, South Dakota, built in 1955. It carries a Low hazard potential classification.
Dam profile
NID height · 20 ft20 ft tall and 285 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Dunn Road Dam
The primary purpose of Dunn Road Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Kenneth Dunn (private). It impounds the Tr-moreau.
The dam stands 20 feet tall and stretches 285 feet across, and has a maximum storage capacity of 52 acre-feet. Completed in 1955, 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.
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Location
| State | South Dakota |
| County | Harding |
| Nearest City | None |
| River/Stream | Tr-moreau |
| Coordinates | 45.32999, -103.74999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 285 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 42 acre-ft |
| Max Discharge | 420 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Kenneth Dunn |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01432 |
| Federal ID | SD01432 |
| More Info | State Dam Safety Program |