|
Incident ID |
MN01822-3355 |
|
Dam Name |
LAKE ZUMBRO CDF |
|
Downstream Hazard Potential |
L |
|
State |
MN |
|
Incident Date |
11/22/2019 |
|
Incident Type |
Failure |
|
Incident Driver |
Structural Stability |
|
Incident Mechanism 1 |
Foundation Deficiency |
|
Incident Mechanism 2 |
Slope Stability |
|
Incident Mechanism 3 |
|
|
Incident Description |
New dam. Concerns about possible karst at spillway. Dam failed during initial filling 2 to 3 feet below design level. |
|
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 |
Other |
|
Economic Damages (in $) |
$1 to $100,000 |
|
Volume released at failure (ac-ft) |
|
|
Response |
Emergency repairs of breach. Dredging downstream harbor of sediments. |
|
Additional Remarks or Updates |
Large debris flow into downstream lake needed cleanout.
Rock foundation failure under core trench. 30 foot wide, vertical wall, 50 foot north of outlet. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
MN Dam Safety |
|
Owner Type |
L |
|
Dam Type |
RE |
|
Primary Purpose(s) |
O |
|
EAP |
NR |
|
Year Completed |
0 |
|
Year Modified |
0 |
|
Dam Height |
37 ft |
|
Max Storage (ac-ft) |
518 ac-ft |
|
Surface Area (acres) |
0 acres |
|
River Name |
|
|
Latitude |
44.1695 |
|
Longitude |
-92.4304 |
|
Regulatory Agency(ies) |
MNDNR EWR |
|
NID Number |
MN01822 |
|
Attachments |
|
