Johnny Johnson Dam is an earth dam located in Butte County, South Dakota, built in 2008. It carries a Low hazard potential classification.
Dam profile
NID height · 17 ft17 ft tall and 670 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 Johnny Johnson Dam
The primary purpose of Johnny Johnson Dam 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 Sd S&pl (state). It impounds the South Fork Moreau River-tr.
The dam stands 17 feet tall and stretches 670 feet across, and has a maximum storage capacity of 275 acre-feet. Completed in 2008, the structure is relatively new.
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 | Butte |
| River/Stream | South Fork Moreau River-tr |
| Coordinates | 45.19525, -103.68863 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 670 ft |
| Year Completed | 2008 (18 years old) |
Storage & Hydraulics
| NID Storage | 275 acre-ft |
| Max Storage | 275 acre-ft |
| Normal Storage | 86 acre-ft |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Sd S&pl |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02640 |
| Federal ID | SD02640 |
| More Info | State Dam Safety Program |