|
Incident ID |
SD00750-3253 |
|
Dam Name |
LAKE HIDDENWOOD DAM |
|
Downstream Hazard Potential |
L |
|
State |
SD |
|
Incident Date |
05/18/2018 |
|
Incident Type |
Failure |
|
Incident Driver |
Hydrologic/flooding |
|
Incident Mechanism 1 |
Overtopping |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
|
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
0 |
|
Number of People Evacuated |
|
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
Bridges, Roads |
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
|
|
Response |
post failure site visit by staff from SD Dam Safety and owner staff, owner closed recreation area associated with the dam |
|
Additional Remarks or Updates |
low hazard dam so was not required to have an EAP, also no habitable structures in the downstream flood plain, bridge across the dam's spillway and gravel road across the crest were washed out, also some flash flooding of downstream cropland |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
No |
|
Information Sources |
SD DENR |
|
Owner Type |
S |
|
Dam Type |
RE |
|
Primary Purpose(s) |
R |
|
EAP |
NR |
|
Year Completed |
1926 |
|
Year Modified |
0 |
|
Dam Height |
27 ft |
|
Max Storage (ac-ft) |
474 ac-ft |
|
Surface Area (acres) |
27 acres |
|
River Name |
TR MISSOURI |
|
Latitude |
0 |
|
Longitude |
0 |
|
Regulatory Agency(ies) |
SD DENR |
|
NID Number |
SD00750 |
|
Attachments |
|
