2026-09-04T20:49:50.89Z40.20316696167-121.077163696297.1999998092651manualconfirmedUSGS1.92md1Origin/20260904205402.52009.2311Magnitude/20260904205402.520151.2312USGS4 km N of Canyondam, CAregion namenccatalognc75429817contributorID