State of South Dakota is an earth dam located in Potter County, South Dakota, built in 1954. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 1,280 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 State of South Dakota
The primary purpose of State of South Dakota is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by S&pl (state). It impounds the Tr-missouri.
The dam stands 12 feet tall and stretches 1,280 feet across, and has a maximum storage capacity of 115 acre-feet. Completed in 1954, 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. The most recent inspection on record was 11/04/2019.
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Location
| State | South Dakota |
| County | Potter |
| Nearest City | None |
| River/Stream | Tr-missouri |
| Coordinates | 45.03434, -99.76216 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 1,280 ft |
| Year Completed | 1954 (72 years old) |
Storage & Hydraulics
| NID Storage | 115 acre-ft |
| Max Storage | 115 acre-ft |
| Normal Storage | 72 acre-ft |
| Max Discharge | 780 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | S&pl |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/04/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00960 |
| Federal ID | SD00960 |
| More Info | State Dam Safety Program |