Information for Strong-Motion Station
Hayfork - Ruth Lake Dam [Mathews Dam]
CGS - CSMIP Station 89363
Earthquakes recorded by this station
(Station Photograph - click to enlarge)(Sensor Layout - click to see PDF File)
Latitude 40.3686 N
Longitude 123.4339 W
Elevation (m) 809
Site Geology  
Vs30 (m/sec)  
Site Class  
Dam Height151' (46.0m)
Plan ShapeCurved
Crest Length--
Crest Width--
Construction Date1962
Instrumentation1979, 9 accelerometers, on crest and abutment.
Superstructure Type--
Dam TypeHydraulic fill.
Foundation Type--