Lake Grace
Lake Grace is an earth dam located in Carver County, Minnesota, built in 1968. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Lake Grace
The primary purpose of Lake Grace is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by City Of Chaska (local government). It impounds the East Creek near Chaska.
The dam stands 40 feet tall and stretches 100 feet across, creates a reservoir covering 19 acres, has a maximum storage capacity of 900 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1968, the structure is well into its service life at over 50 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 10/24/2017.
At 40 feet, this dam is taller than 87% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Minnesota |
| County | Carver |
| Nearest City | Chaska |
| River/Stream | East Creek |
| Coordinates | 44.82297, -93.60546 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 30 ft |
| Dam Length | 100 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 900 acre-ft |
| Max Storage | 900 acre-ft |
| Normal Storage | 200 acre-ft |
| Surface Area | 19 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 100 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Chaska |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/24/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MN00808 |
| Federal ID | MN00808 |
| More Info | State Dam Safety Program |