Information for Strong-Motion Station
Pomona - Puddingstone Dam
CGS - CSMIP Station 23328
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 34.0906 N
Longitude 117.8092 W
Elevation (m) 301
Site Geology  
Vs30 (m/sec)  
Site Class  
Dam Height148'
Plan Shapestraight & curved
Crest Length1,085'
Crest Width25'
Construction Date1928
Instrumentation1978, 15 accelerometers on dam and a downstream site. The dam was re-instrumented in 2009 and the downstream free-field is a separate station (Sta. No. 23327).
Superstructure Type--
Dam Typeearth dam
Foundation Type--