Dejong Bros. 7
Dejong Bros. 7 is an earth dam located in Lyman County, South Dakota, built in 1962. It carries a Low hazard potential classification.
About Dejong Bros. 7
The primary purpose of Dejong Bros. 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 Dejong Bros. (private). It impounds the White River Offstream.
The dam stands 33 feet tall and stretches 319 feet across, and has a maximum storage capacity of 33 acre-feet. Completed in 1962, 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.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | South Dakota |
| County | Lyman |
| Nearest City | None |
| River/Stream | White River Offstream |
| Coordinates | 43.75499, -99.77999 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 319 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 33 acre-ft |
| Max Storage | 33 acre-ft |
| Normal Storage | 9 acre-ft |
| Max Discharge | 420 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | DEJONG BROS. |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01179 |
| Federal ID | SD01179 |
| More Info | State Dam Safety Program |