Pazour Lake is an earth dam located in Brule County, South Dakota, built in 1936. It carries a Significant hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 400 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 Pazour Lake
The primary purpose of Pazour Lake 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 400 feet across, creates a reservoir covering 47 acres, has a maximum storage capacity of 775 acre-feet, and collects water from a drainage area of 39 square miles. Completed in 1936, the structure is well-established, with more than 75 years of service.
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. The most recent inspection on record was 10/03/2022.
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Location
| State | South Dakota |
| County | Brule |
| Nearest City | None |
| River/Stream | Tr-missouri |
| Coordinates | 43.62888, -99.15958 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 400 ft |
| Year Completed | 1936 (90 years old) |
Storage & Hydraulics
| NID Storage | 775 acre-ft |
| Max Storage | 775 acre-ft |
| Normal Storage | 247 acre-ft |
| Surface Area | 47 acres |
| Drainage Area | 39 sq mi |
| Max Discharge | 1,340 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | S&pl |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 10/03/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD00719 |
| Federal ID | SD00719 |
| More Info | State Dam Safety Program |