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Between July 27 (12:00 AM PST) and August 2 (11:59 PM) there were 52 earthquakes in California of magnitude 2.0 or larger. 🔸46 quakes between magnitude 2.0 - 2.9 🔸5 quakes between magnitude 3.0 - 3.9 🔸1 earthquake between M 4.0 - 4.9 The largest earthquake was a magnitude 4.2 near Cloverdale, CA.

In 2023, California remained one of the largest producers of non-fuel minerals in the US. Specifically, California ranked 5th behind Arizona, Minnesota, Nevada, and Texas with a non-fuel mineral production value of 5.6 billion dollars, accounting for approximately 4.85% of the nation’s total.

Between July 20 (12:00 AM PST) and July 26 (11:59 PM) there were 46 earthquakes in California of magnitude 2.0 or larger. 🔸42 earthquakes between magnitude 2.0 - 2.9 🔸4 earthquakes between magnitude 3.0 - 3.9 The largest earthquake was a magnitude 3.6 near Brawley, CA.

Between July 13 (12:00 AM PST) and July 19 (11:59 PM) there were 54 earthquakes in California of magnitude (M) 2.0 or larger. 🔸51 earthquakes between M2.0 - 2.9 🔸2 earthquakes between M3.0 - 3.9 🔸1 earthquake between M4.0 - 4.9 The largest earthquake was a magnitude 4.3 near N of Johannesburg, CA.

Explore our Postfire Debris Flow database, an interactive map of debris flow events since 2000, built on data from government agencies, media, scientific literature, and the public. www.conservation.ca.gov/cgs/landslid...

New Postfire Debris Flow Potential Map! The brand-new California Geological Survey (CGS) Postfire Debris Flow Potential Map depicts the combined annual probability of wildfire and subsequent debris flow that is triggered by rainfall. www.conservation.ca.gov/cgs/bwg/pref...

Between July 6 (12:00 AM PST) and July 12 (11:59 PM) there were 61 earthquakes in California of magnitude (M) 2.0 or larger. 🔸55 quakes between M2.0 - 2.9 🔸4 quakes between M3.0 - 3.9 🔸2 quakes between M4.0 - 4.9 The largest earthquake was a magnitude 4.4 north of Covelo, CA.

Contained in the rocks of the Sierra Nevada is a story that spans more than 500 million years. www.conservation.ca.gov/cgs/sierra-n...

Between June 29 (12:00 AM PST) and July 5 (11:59 PM) there were 45 earthquakes in California of magnitude 2.0 or larger. 🔸41 earthquakes between magnitude 2.0 - 2.9 🔸4 earthquakes between magnitude 3.0 - 3.9 The largest earthquake was a magnitude 3.9 near Alder Springs, CA.

A magnitude 5.6 earthquake occurred 11 km N of Redwood Valley, CA at 8:10 am. This earthquake produced strong to very strong shaking near the epicenter and light shaking that was felt across Northern California. CGS is monitoring the situation. earthquake.usgs.gov/earthquakes/...

Between June 15 (12:00 AM PST) and June 21 (11:59 PM) there were 55 earthquakes in California of magnitude 2.0 or larger. 🔸49 quakes between M2.0 - 2.9 🔸6 quakes between M3.0 - 3.9 The largest quakes were both M3.6. One quake occurred WNW of Johannesburg and the other was N of Searles Valley, CA.

Between June 8 (12:00 AM PST) and June 14 (11:59 PM) there were 45 earthquakes in California of magnitude 2.0 or larger. 🔸40 earthquakes between magnitude 2.0 - 2.9 🔸5 earthquakes between magnitude 3.0 - 3.9 The largest earthquake was a magnitude 3.4 NW of The Geysers, CA.

Between June 1 (12:00 AM PST) and June 7 (11:59 PM) there were 56 earthquakes in California of magnitude 2.0 or larger. 🔸46 quakes between M2.0 - 2.9 🔸6 quakes between M3.0 - 3.9 🔸3 quakes between M4.0 - 4.9 🔸1 quakes between M5.0 - 5.9 The largest earthquake was a M5.1 W of Petrolia, CA.

Between May 25 (12:00 AM PST) and May 31 (11:59 PM) there were 61 earthquakes in California of magnitude 2.0 or larger. 🔸56 quakes between magnitude 2.0 - 2.9 🔸5 quakes between magnitude 3.0 - 3.9 The largest earthquake was a magnitude 3.9 W of Petrolia, CA. cadoc.maps.arcgis.com/apps/dashboa...

Interested in learning more about the newly released Sierra Nevada Earth Science Atlas? Read about it in California Geology Magazine! www.conservation.ca.gov/cgs/document...

Between May 4 (12:00 AM PST) and May 10 (11:59 PM) there were 183 earthquakes in California of magnitude 2.0 or larger. 🔸153 earthquakes between M2.0 - 2.9 🔸25 earthquakes between M3.0 - 3.9 🔸5 earthquakes between M4.0 - 4.9 The largest earthquake was a M4.9 WSW of Crescent City, CA

The newly released Sierra Nevada Atlas is a collection of maps, geospatial datasets, and associated text that presents geologic map layers, geophysical layers, economic geology layers, neotectonic features, and geochronology for the Sierra Nevada. www.conservation.ca.gov/cgs/sierra-n...

Between April 27 (12:00 AM PST) and May 3 (11:59 PM) there were 43 earthquakes in California of magnitude 2.0 or larger. 🔸34 earthquakes between magnitude 2.0 - 2.9 🔸9 earthquakes between magnitude 3.0 - 3.9 The largest earthquake was a magnitude 3.7 near Petrolia, CA

NEW RELEASE! Sierra Nevada Earth Science Atlas The Sierra Nevada Earth Science Atlas provides the most detailed geologic framework mapping of the Sierra Nevada that has ever been made. www.conservation.ca.gov/cgs/sierra-n...

NEW RELEASE! Map Sheet 52: Aggregate Sustainability in California Aggregate materials like sand, gravel, and crushed stone are essential to modern society, both to maintain the existing infrastructure and to provide for new construction. www.conservation.ca.gov/cgs/minerals...