|
Incident ID |
MI00550-3512 |
|
Dam Name |
SANFORD |
|
Downstream Hazard Potential |
H |
|
State |
MI |
|
Incident Date |
05/19/2020 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
The failure was the result of embankment overtopping. The breach outflows from Wixom Lake after the failure of Edenville Dam caused the water level in Sanford Lake to rise more quickly than could be accommodated by the spillways at Sanford Dam. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
11000 |
|
Number of Habitable Structures Evacuated |
3000 |
|
Number of Habitable Structures Flooded |
3000 |
|
Other Infrastructure Impacts |
Roads |
|
Economic Damages (in $) |
over $100 million |
|
Volume released at failure (ac-ft) |
15000 ac-ft |
|
Response |
See IFT Report |
|
Additional Remarks or Updates |
According to the 2020 major disaster declaration request by the State (Michigan 2020), the damage across
a five-county area was estimated at roughly $190 million in losses for residents. Over 3,000 homes were
affected, and there was $55 million in damage to public infrastructure. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
2022 IFT Report |
|
Owner Type |
P |
|
Dam Type |
CNMV |
|
Primary Purpose(s) |
H |
|
EAP |
Y |
|
Year Completed |
1925 |
|
Year Modified |
0 |
|
Dam Height |
36 ft |
|
Max Storage (ac-ft) |
15000 ac-ft |
|
Surface Area (acres) |
1526 acres |
|
River Name |
TITTAWABASSEE RIVER |
|
Latitude |
43.6769 |
|
Longitude |
-84.3803 |
|
Regulatory Agency(ies) |
MICHIGAN DEQ |
|
NID Number |
MI00550 |
|
Attachments |
Y |
