Sandy Lock and Dam is an earth dam located in Aitkin County, Minnesota, built in 1895. It carries a Low hazard potential classification.
Dam profile
NID height · 22 ft22 ft tall and 109 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 Sandy Lock and Dam
Sandy Lock and Dam is a dam in Aitkin, Minnesota. The dam is owned by USACE - St. Paul District (federal). It impounds the Sandy River near Libby.
The dam stands 22 feet tall and stretches 109 feet across, creates a reservoir covering 9,400 acres, has a maximum storage capacity of 79,400 acre-feet, and collects water from a drainage area of 421 square miles. Completed in 1895, the structure is over a century 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/02/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Minnesota |
| County | Aitkin |
| Nearest City | Libby |
| River/Stream | Sandy River |
| Coordinates | 46.78795, -93.31985 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 14 ft |
| Dam Length | 109 ft |
| Year Completed | 1895 (131 years old) |
Storage & Hydraulics
| NID Storage | 79,400 acre-ft |
| Max Storage | 79,400 acre-ft |
| Normal Storage | 38,000 acre-ft |
| Surface Area | 9,400 acres |
| Drainage Area | 421 sq mi |
| Max Discharge | 3,738 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | USACE - St. Paul District |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/02/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | MN00583 |
| Federal ID | MN00583 |
| More Info | State Dam Safety Program |