Dolezal John Number 7 is an earth dam located in Mellette County, South Dakota, built in 1960. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 500 ft long, taller than 55% of U.S. dams with a recorded height. 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 Dolezal John Number 7
The primary purpose of Dolezal John Number 7 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 John Dolezal (private). It impounds the Tr Little White Offstream.
The dam stands 26 feet tall and stretches 500 feet across, and has a maximum storage capacity of 41 acre-feet. Completed in 1960, 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 | Mellette |
| Nearest City | None |
| River/Stream | Tr Little White Offstream |
| Coordinates | 43.48333, -100.69999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 500 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 41 acre-ft |
| Max Storage | 41 acre-ft |
| Normal Storage | 30 acre-ft |
| Max Discharge | 850 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | John Dolezal |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01281 |
| Federal ID | SD01281 |
| More Info | State Dam Safety Program |