|
Incident ID |
WA00085-2000 |
|
Dam Name |
WANAPUM |
|
Downstream Hazard Potential |
H |
|
State |
WA |
|
Incident Date |
02/28/2014 |
|
Incident Type |
Non-failure |
|
Incident Driver |
Unknown |
|
Incident Mechanism 1 |
Under Investigation |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
An engineer noticed a slight irregular bowing above the spillway gates Divers found a 2-inch-wide crack that stretched for 65 feet along the base of one of the dam's spillway piers. |
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
Yes |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
0 |
|
Number of Habitable Structures Evacuated |
|
|
Number of Habitable Structures Flooded |
|
|
Other Infrastructure Impacts |
|
|
Economic Damages (in $) |
|
|
Volume released at failure (ac-ft) |
|
|
Response |
|
|
Additional Remarks or Updates |
Grant County authorities have activated an emergency-response plan. Officials said there is no threat to the public from the crack. The owner lowered water levels a total of 20 feet. After the lowering the crack closed and the monolith moved 1.75 inches back upstream |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
U |
|
Dam Type |
PGERCN |
|
Primary Purpose(s) |
HCR |
|
EAP |
Y |
|
Year Completed |
1965 |
|
Year Modified |
0 |
|
Dam Height |
205 ft |
|
Max Storage (ac-ft) |
796000 ac-ft |
|
Surface Area (acres) |
14590 acres |
|
River Name |
COLUMBIA RIVER |
|
Latitude |
46.8731 |
|
Longitude |
-119.97 |
|
Regulatory Agency(ies) |
Federal Energy Regulatory Com |
|
NID Number |
WA00085 |
|
Attachments |
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