|
Incident ID |
MI00379-1340 |
|
Dam Name |
CORUNNA DAM |
|
Downstream Hazard Potential |
S |
|
State |
MI |
|
Incident Date |
06/26/2012 |
|
Incident Type |
Failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Other |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Deterioration of the concrete-capped timber-crib spillway has led to a partial breach in the dam. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
0 |
|
Other Infrastructure Impacts |
None |
|
Economic Damages (in $) |
None |
|
Volume released at failure (ac-ft) |
35 ac-ft |
|
Response |
|
|
Additional Remarks or Updates |
Water is flowing through a sinkhole in sediment material upstream of dam through a hole in downstream face of the dam likely carrying foundation materials and sediment with it. Partial breach continues to develop during periods of low flows. Has lowered the impoundment approximately 2 vertical feet. Impoundment continues to be drawn down through the breach as headcut through sediment develops and foundation materials are eroded. No full release of impoundment waters and sediments has occured to date. |
|
Incident Time |
12:00 AM |
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
L |
|
Dam Type |
TC |
|
Primary Purpose(s) |
R |
|
EAP |
Y |
|
Year Completed |
1843 |
|
Year Modified |
0 |
|
Dam Height |
15 ft |
|
Max Storage (ac-ft) |
80 ac-ft |
|
Surface Area (acres) |
17 acres |
|
River Name |
SHIAWASSEE RIVER |
|
Latitude |
42.9857 |
|
Longitude |
-84.1179 |
|
Regulatory Agency(ies) |
Michigan DEQ |
|
NID Number |
MI00379 |
|
Attachments |
Y |
