Incident ID |
SD00010-3409 |
Dam Name |
PLATTE |
Downstream Hazard Potential |
L |
State |
SD |
Incident Date |
09/12/2019 |
Incident Type |
Failure |
Incident Driver |
Hydrologic/flooding |
Incident Mechanism 1 |
Overtopping |
Incident Mechanism 2 |
|
Incident Mechanism 3 |
|
Incident Description |
Wide spread rainfall on saturated ground ranging from 5 to 10 inches between September 11-12, 2019 caused Platte Creek to reach record levels which overtopped and failed Platte Dam. |
Named Hydrologic Event |
|
EAP Enacted (Y/N) due to Incident |
No |
Fatalities (Number) |
0 |
Number of People Evacuated |
unknown |
Number of Habitable Structures Evacuated |
unknown |
Number of Habitable Structures Flooded |
unknown |
Other Infrastructure Impacts |
|
Economic Damages (in $) |
|
Volume released at failure (ac-ft) |
|
Response |
State dam safety staff did a site visit on Sept. 17, 2019 to document. |
Additional Remarks or Updates |
|
Incident Time |
|
Incident Duration |
|
Incident Report Produced |
|
Information Sources |
SD Dam Safety |
Owner Type |
L |
Dam Type |
RE |
Primary Purpose(s) |
R |
EAP |
NR |
Year Completed |
1935 |
Year Modified |
1973 |
Dam Height |
28 ft |
Max Storage (ac-ft) |
1200 ac-ft |
Surface Area (acres) |
0 acres |
River Name |
PLATTE CREEK |
Latitude |
43.385 |
Longitude |
-98.8867 |
Regulatory Agency(ies) |
DENR |
NID Number |
SD00010 |
Attachments |
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