|
Incident ID |
SC00625-3129 |
|
Dam Name |
LAKE DARPO DAM |
|
Downstream Hazard Potential |
L |
|
State |
SC |
|
Incident Date |
09/16/2018 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Piping |
|
Incident Mechanism 2 |
Spillway Pipe Failure |
|
Incident Mechanism 3 |
|
|
Incident Description |
Heavy rainfall and flooding contributed to failure. Failure occurred at a 36" horizontal pipe (acting as auxiliary spillway) that had been placed through the dam, near the left abutment. The owners do not believe that the dam was overtopped, but that heavy flow led to erosion/piping around the horizontal pipe. Breach prevented access to a large portion of the dam and the primary spillway structure. |
|
Named Hydrologic Event |
Hurricane Florence |
|
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 |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
State Dam Safety Program performed a full inspection following the breach of this dam. The inspection report will contain a requirement that the Owner hire an engineer and submit either a permit application for repair or removal of the dam. |
|
Additional Remarks or Updates |
Report on dam failures associated with Hurricane Florence to be released by Geotechnical Extreme Event Reconnaisance (GEER) group at some point in the future. GEER team field work occurred during month of September 2018. |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
SC Dam Safety |
|
Owner Type |
L |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
NR |
|
Year Completed |
1957 |
|
Year Modified |
0 |
|
Dam Height |
15 ft |
|
Max Storage (ac-ft) |
146 ac-ft |
|
Surface Area (acres) |
20 acres |
|
River Name |
BUCKHOLTZ CREEK |
|
Latitude |
34.4573 |
|
Longitude |
-79.8804 |
|
Regulatory Agency(ies) |
SC DHEC |
|
NID Number |
SC00625 |
|
Attachments |
|
