|
Incident ID |
AZ00000-103 |
|
Dam Name |
WALNUT GROVE |
|
Downstream Hazard Potential |
H |
|
State |
AZ |
|
Incident Date |
01/01/1890 |
|
Incident Type |
Failure |
|
Incident Driver |
Unknown |
|
Incident Mechanism 1 |
Spillway Deficiency |
|
Incident Mechanism 2 |
|
|
Incident Mechanism 3 |
|
|
Incident Description |
|
|
Named Hydrologic Event |
|
|
EAP Enacted (Y/N) due to Incident |
No |
|
Fatalities (Number) |
|
|
Number of People Evacuated |
|
|
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 |
Destroyed town of Seymour (pop: <10); huge economic losses in Wickenburg; washed out new 25-high diversion dam 12 miles downstream. Inadequate spillway that was able to pass only about 4% of the flood flow at the time of failure; spillway terminated a. Jim Liggett, Cornell University http://roadrunnergold.com/PDF_Files/2006%20Newsletters/2006July-a_web.pdf
Fatalities: - Unknown; most likely +/- 70, although published estimates range from 10-150 |
|
Incident Time |
|
|
Incident Duration |
|
|
Incident Report Produced |
|
|
Information Sources |
|
|
Owner Type |
|
|
Dam Type |
ER |
|
Primary Purpose(s) |
|
|
EAP |
|
|
Year Completed |
0 |
|
Year Modified |
0 |
|
Dam Height |
110 ft |
|
Max Storage (ac-ft) |
0 ac-ft |
|
Surface Area (acres) |
0 acres |
|
River Name |
HASSAYAMPA |
|
Latitude |
0 |
|
Longitude |
0 |
|
Regulatory Agency(ies) |
|
|
NID Number |
AZ00000 |
|
Attachments |
|
