|
Incident ID |
WI00225-3611 |
|
Dam Name |
MANAWA DAM |
|
Downstream Hazard Potential |
L |
|
State |
WI |
|
Incident Date |
07/05/2024 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Debris Clogging |
|
Incident Mechanism 2 |
Overtopping |
|
Incident Mechanism 3 |
|
|
Incident Description |
Overtopping due to heavy rain and debris blockage at 3 part open gates. Breach formed at RT abutment. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
Unknown |
|
Number of Habitable Structures Evacuated |
Unknown |
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
Bridges, Water/sewer lines |
|
Economic Damages (in $) |
$100,000 to $500,000 |
|
Volume released at failure (ac-ft) |
|
|
Response |
City contacted operator, lives out of town, monitors level remotely, but gates operated on site. |
|
Additional Remarks or Updates |
Approx. 5.5 inches rainfall in approx. 4 hours, with potential 4” in one hour. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
WIDNR |
|
Owner Type |
L |
|
Dam Type |
PG |
|
Primary Purpose(s) |
HR |
|
EAP |
NR |
|
Year Completed |
1920 |
|
Year Modified |
0 |
|
Dam Height |
15 ft |
|
Max Storage (ac-ft) |
1070 ac-ft |
|
Surface Area (acres) |
195 acres |
|
River Name |
LITTLE WOLF |
|
Latitude |
44.4667 |
|
Longitude |
-88.9167 |
|
Regulatory Agency(ies) |
WIDNR |
|
NID Number |
WI00225 |
|
Attachments |
|
