|
Incident ID |
WI00057-3419 |
|
Dam Name |
WITTENBERG |
|
Downstream Hazard Potential |
L |
|
State |
WI |
|
Incident Date |
04/19/2019 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
Erosion |
|
Incident Mechanism 3 |
Accident Or Misoperation |
|
Incident Description |
Overtopping led to erosion and partial embankment failure, particularly near concrete spillway and cutoff wall. Additional seepage observed. Delay in operating gates may have contributed. |
|
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 |
Roads, Bridges, Dams Downstream |
|
Economic Damages (in $) |
$1 to $100,000 |
|
Volume released at failure (ac-ft) |
|
|
Response |
Dam safety staff notified by local enforcement and DNR conservation warden. Contacted owner to monitor, provided FYI to downstream residents. Owner advised to further activate EAP if conditions deteriorated further. |
|
Additional Remarks or Updates |
Repairs are nearly complete which included construction of an auxiliary spillway, gate stem repairs, embankment repairs, and minor concrete repairs. |
|
Incident Time |
|
|
Incident Duration |
1 day |
|
Incident Report Produced |
No |
|
Information Sources |
WI Dam Safety |
|
Owner Type |
P |
|
Dam Type |
PGRE |
|
Primary Purpose(s) |
R |
|
EAP |
Y |
|
Year Completed |
1885 |
|
Year Modified |
1908 |
|
Dam Height |
22 ft |
|
Max Storage (ac-ft) |
360 ac-ft |
|
Surface Area (acres) |
40 acres |
|
River Name |
MIDDLE BRANCH EMBARRASS |
|
Latitude |
44.8411 |
|
Longitude |
-89.1575 |
|
Regulatory Agency(ies) |
WIDNR |
|
NID Number |
WI00057 |
|
Attachments |
|
