Canton Dam No.1 is an earth dam located in Lincoln County, South Dakota, built in 1977. It carries a Significant hazard potential classification.
Dam profile
NID height · 27 ft27 ft tall and 455 ft long, taller than 59% 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 Canton Dam No.1
The primary purpose of Canton Dam No.1 is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Brad Goodroad (private). It impounds the Trib-big Sioux River near Canton.
The dam stands 27 feet tall and stretches 455 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 159 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1977, the structure is 49 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. The most recent inspection on record was 11/13/1979. That was over 46 years ago.
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Location
| State | South Dakota |
| County | Lincoln |
| Nearest City | Canton |
| River/Stream | Trib-big Sioux River |
| Coordinates | 43.30638, -96.57627 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 455 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 159 acre-ft |
| Max Storage | 159 acre-ft |
| Normal Storage | 68 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 821 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Brad Goodroad |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 11/13/1979 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | SD02142 |
| Federal ID | SD02142 |
| More Info | State Dam Safety Program |