Simon Dam
Simon Dam is an earth dam located in Potter County, South Dakota, built in 1936. It carries a Low hazard potential classification.
About Simon Dam
The primary purpose of Simon Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by S&pl (state). It impounds the Tr-missouri.
The dam stands 21 feet tall and stretches 490 feet across, and has a maximum storage capacity of 1,260 acre-feet. Completed in 1936, 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. The most recent inspection on record was 10/20/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | South Dakota |
| County | Potter |
| Nearest City | None |
| River/Stream | Tr-missouri |
| Coordinates | 45.17919, -99.79113 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 490 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 1,260 acre-ft |
| Max Storage | 1,260 acre-ft |
| Normal Storage | 611 acre-ft |
| Max Discharge | 2,940 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&PL |
| Owner Type | State |
| Hazard Classification | Low |
| Last Inspection | 10/20/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00956 |
| Federal ID | SD00956 |
| More Info | State Dam Safety Program |