|
Incident ID |
CA00144-3590 |
|
Dam Name |
SWANZY LAKE |
|
Downstream Hazard Potential |
H |
|
State |
CA |
|
Incident Date |
03/30/2023 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Other |
|
Incident Mechanism 1 |
Landslide |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Elevated turbidity and groundwater intrusion near a hillside slide away from the dam embankment. |
|
Named Hydrologic Event |
|
|
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 $) |
None |
|
Volume released at failure (ac-ft) |
|
|
Response |
Reservoir was drained via the owner's sanitary sewer system because the outlet was not functional. |
|
Additional Remarks or Updates |
Reservoir was restricted and will remain drained until the outlet's functionality is reinstated. |
|
Incident Time |
1:00 am |
|
Incident Duration |
|
|
Incident Report Produced |
Yes |
|
Information Sources |
CA DSOD |
|
Owner Type |
L |
|
Dam Type |
RE |
|
Primary Purpose(s) |
S |
|
EAP |
Y |
|
Year Completed |
1931 |
|
Year Modified |
0 |
|
Dam Height |
86 ft |
|
Max Storage (ac-ft) |
107 ac-ft |
|
Surface Area (acres) |
4 acres |
|
River Name |
TR CARQUINEZ STR |
|
Latitude |
38.0765 |
|
Longitude |
-122.227 |
|
Regulatory Agency(ies) |
DWR, SAFETY OF DAMS |
|
NID Number |
CA00144 |
|
Attachments |
|
