Jean Simon No.1 is an earth dam located in Dewey County, South Dakota, built in 1950. It carries a Low hazard potential classification.
Dam profile
NID height · 26 ft26 ft tall and 400 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 Jean Simon No.1
The primary purpose of Jean Simon No.1 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 Jean Simon (private). It impounds the Tr Moreau.
The dam stands 26 feet tall and stretches 400 feet across, and has a maximum storage capacity of 100 acre-feet. Completed in 1950, the structure is well-established, with more than 75 years of service.
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.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Dewey |
| Nearest City | None |
| River/Stream | Tr Moreau |
| Coordinates | 45.04833, -101.01499 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 400 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 100 acre-ft |
| Max Storage | 100 acre-ft |
| Normal Storage | 42 acre-ft |
| Max Discharge | 600 cfs |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Jean Simon |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD01702 |
| Federal ID | SD01702 |
| More Info | State Dam Safety Program |