|
Incident ID |
CA00035-3097 |
|
Dam Name |
OROVILLE |
|
Downstream Hazard Potential |
H |
|
State |
CA |
|
Incident Date |
02/07/2017 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Deterioration Or Poor Condition |
|
Incident Mechanism 1 |
Erosion |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
Service and emergency spillway failures |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
188000 |
|
Number of Habitable Structures Evacuated |
Unknown |
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
None |
|
Economic Damages (in $) |
Unknown |
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
Long-term systemic failure of the CA DWR, regulatory, and general industry practices to recognize and address inherent spillway design and construction weaknesses, poor bedrock quality, and deteriorated service spillway chute conditions. Reconstruction of the flood constrol spillway completed November 1, 2018. Incident Description from Independent Forensic Team Report, Oroville Dam Spillway Incident, dated January 5, 2018 |
|
Incident Time |
|
|
Incident Duration |
2 days - Evacation order initiated February 12, 2017 and the order lifted February 14, 2017 |
|
Incident Report Produced |
Yes |
|
Information Sources |
|
|
Owner Type |
S |
|
Dam Type |
ERRE |
|
Primary Purpose(s) |
CHIRS |
|
EAP |
Y |
|
Year Completed |
1968 |
|
Year Modified |
0 |
|
Dam Height |
770 ft |
|
Max Storage (ac-ft) |
3540000 ac-ft |
|
Surface Area (acres) |
15800 acres |
|
River Name |
FEATHER RIVER |
|
Latitude |
39.5388 |
|
Longitude |
-121.485 |
|
Regulatory Agency(ies) |
DWR, SAFETY OF DAMS |
|
NID Number |
CA00035 |
|
Attachments |
|
