Sd Noname 112 is an earth dam located in Haakon County, South Dakota, built in 1957. It carries a Significant hazard potential classification.
Dam profile
NID height · 30 ft30 ft tall and 750 ft long, taller than 68% 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 Sd Noname 112
The primary purpose of Sd Noname 112 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 Russell & Bonnie Mortellaro (private). It impounds the Nork Fork Bad River-tr near Philip.
The dam stands 30 feet tall and stretches 750 feet across, and has a maximum storage capacity of 180 acre-feet. Completed in 1957, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life.
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Location
| State | South Dakota |
| County | Haakon |
| Nearest City | Philip |
| River/Stream | Nork Fork Bad River-tr |
| Coordinates | 44.04891, -101.72732 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 750 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 180 acre-ft |
| Max Storage | 180 acre-ft |
| Normal Storage | 100 acre-ft |
| Max Discharge | 405 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Russell & Bonnie Mortellaro |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00834 |
| Federal ID | SD00834 |
| More Info | State Dam Safety Program |