HANSKA LAKE - MN00070-3261
| Incident ID | MN00070-3261 |
| Dam Name | HANSKA LAKE |
| Downstream Hazard Potential | |
| State | MN |
| Incident Date | 03/21/2019 |
| Incident Type | Non-failure |
| Incident Driver | Hydrologic/flooding |
| Incident Mechanism 1 | Erosion |
| Incident Mechanism 2 | Overtopping |
| Incident Mechanism 3 | |
| Incident Description | Flooding due to spring runoff. Spilling around the west side of the dam causing scour erosion. |
| Named Hydrologic Event | |
| EAP Enacted (Y/N) due to Incident | No |
| Fatalities (Number) | 0 |
| Number of People Evacuated | 0 |
| Number of Habitable Structures Evacuated | 0 |
| Number of Habitable Structures Flooded | 0 |
| Other Infrastructure Impacts | None |
| Economic Damages (in $) | None |
| Volume released at failure (ac-ft) | |
| Response | Riprap placed on west side of the structure to stop erosion. |
| Additional Remarks or Updates | Working on redesign. Structure overtops frequently. Rebuild will be jurisdictional, existing dam is not. |
| Incident Time | |
| Incident Duration | 1 day |
| Incident Report Produced | Yes |
| Information Sources | MNDNR |
| Owner Type | S |
| Dam Type | REPG |
| Primary Purpose(s) | |
| EAP | NR |
| Year Completed | 1930 |
| Year Modified | 1986 |
| Dam Height | 5 ft |
| Max Storage (ac-ft) | 13777 ac-ft |
| Surface Area (acres) | 1740 acres |
| River Name | WATONWAN RIVER - TR |
| Latitude | 44.11 |
| Longitude | -94.5663 |
| Regulatory Agency(ies) | MNDNR |
| NID Number | MN00070 |
| Attachments |
