California Department of Conservation
@calconservation.bsky.social
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Promoting & managing California's natural resources through science, environmental health, economic vitality, and informed land-use decisions. #CalConservation
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cageosurvey.bsky.social
California Weekly Earthquake Report

Between September 22 (12:00 AM PST) & September 28 (11:59 PM) there were 31 earthquakes in CA of magnitude 2.0 or larger.

-30 quakes between M2.0 - 2.9
-1 quake between M4.0 - 4.9

The largest was a magnitude 4.3 earthquake near Berkeley.
Infographic with a map of California. Red dots of different sizes showing earthquake locations the location and relative magnitude of earthquakes in the past week. On the right is a bar graph showing the number of earthquakes of different sizes.
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cageosurvey.bsky.social
Join us on Sept. 14th for @nhm.org
10th Annual #DinoFest! Geologists from CGS will be on site with a table full of rocks, fossils, maps, and hands-on activities. Save your spot today: nhm.org/dinofest
A vivid cartoon image of different dinosaurs, including a T-Rex and a triceratops. The text says September 14, 2025 Dino fest.
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cageosurvey.bsky.social
California Weekly Earthquake Report

Between September 1 (12:00 AM PST) and September 7 (11:59 PM PST) there were 46 earthquakes in California of magnitude 2.0 or larger.

- 42 quakes between M 2.0 - 2.9
- 4 quakes between M 3.0 - 3.9

The largest was a magnitude 3.7 near Los Pinos, CA.
Map showing the location of earthquakes in California marked by red dots. There is a paragraph showing 42 earthquakes of magnitude two and four earthquakes of magnitude three.
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cageosurvey.bsky.social
California Weekly Earthquake Report

Between September 8 (12:00 AM PST) and September 14 (11:59 PM) there were 69 earthquakes in California of magnitude 2.0 or larger.

-56 quakes between M2.0 - 2.9
-13 quakes between M3.0 - 3.9

The largest was a magnitude 3.7 near Maricopa, CA.
This image shows a map of California with the locations of the earthquakes plotted with red dots. Next to that is a bar graph showing the number of magnitude 2+ earthquakes and magnitude 3+ earthquakes as well as the large number “69“ to show the total number of earthquakes above a magnitude to.
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cageosurvey.bsky.social
At the finish line were booths with information so participants could learn more about tsunami science and preparedness. Remember, if you are in a tsunami hazard zone and receive a warning or feel strong, prolonged shaking move inland and go towards high ground. www.tsunamizone.org
Two people stand underneath of a pop-up with the California Department of conservation logo. They are standing behind a table with a California geological survey tablecloth and distributing educational information.
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cageosurvey.bsky.social
This past weekend CGS geologists participated in the Santa Cruz’s “Race the Wave” event to raise awareness about tsunamis. The race path took participants along the tsunami evacuation route from the beach to high ground.
A CGS employee stands with two event participants. He is showing them maps of tsunami hazard zones on an iPad.
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cageosurvey.bsky.social
We showed fossils & rocks and discussed topics like where to find trilobite fossils, how to stay safe during earthquakes, how Seismic Hazard Zone Maps work, and what a typical day in the life of a CGS geologist is like.

Thanks for joining us for this exciting event!
A man in a hat sits behind a table that has a tablecloth that says California Department of conservation California geological survey. On the table are an array of rocks and fossils.
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cageosurvey.bsky.social
On Sept. 15th, CGS participated in the 10th Annual Dino Fest at the @nhm.org!
A man sits behind a counter that is covered by rocks and fossil specimens. Two small children and an adult are talking with the man and looking at the rocks.
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cageosurvey.bsky.social
If you feel earthquake shaking or receive an earthquake alert you should drop down to the ground, take cover under a sturdy object, and hold on until all the shaking has stopped. www.shakeout.org/california/d...
Images showing the protective action you should take if you feel earthquake, shaking, or receive an earthquake alert.
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cageosurvey.bsky.social
At 2:56 AM a magnitude 4.3 earthquake occurred near Berkeley, CA. The earthquake location is close to the Hayward fault. This earthquake generated light shaking across the Bay Area. The CGS continues to monitor the situation. www.conservation.ca.gov/cgs
Map of the San Francisco Bay area that shows the locations of strong motion stations which are marked by triangles. The colors on the map represent different levels of shaking with purples being weak shaking, blues being light shaking and green being moderate shaking.
Reposted by California Department of Conservation
cageosurvey.bsky.social
California Weekly Earthquake Report

Between September 15 (12:00 AM PST) & September 21 (11:59 PM) there were 43 earthquakes in CA of magnitude 2.0 or larger.

-41 quakes between M2.0 - 2.9
-2 quakes between M3.0 - 3.9

The largest was a magnitude 3.3 earthquake near Clayton.
Infographic with a bar graphic showing the number of earthquakes in California greater than a M2 that have occurred in the last week. Quake locations are marked by red dots on a map of California.
calconservation.bsky.social
CalConservation joined @canaturalresources.bsky.social & other state partners at the State Capitol for the 58th #CaNativeAmericanDay!

Visitors met our Tribal Liaisons, Crystal Blue (Miwok/Nisenan) & Amilia Bryan, & learned about grants + our work with #CaliforniaTribes.
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governor.ca.gov
Today is Native American Day in California — a celebration of Native culture and achievements, an acknowledgment of what Native peoples have endured, and a day to honor their resilience and all that they’ve protected.

Basket: Brittany Souza, Karuk Tribe
California celebrates Native American Day
calconservation.bsky.social
🦇 California is home to 25+ bat species that protect crops & keep ecosystems thriving! On #CABiodiversityDay,
#CalConservation's Bat Biologist Trinity Smith joined CA Dept. of Fish & Wildlife, NorCal Bats & partners at Cosumnes River Preserve for an evening celebrating bats. 🌙
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calandtrusts.org
While visiting LA Neighborhood Land Trust's community garden in Unidad Park, our team heard more about their work and how the Capacity Building Grant, funded by @calconservation.bsky.social, is being put into action. #CCLTOutOnTheLand
calconservation.bsky.social
After the July 29, 2025, M8.8 #Kamchatka Peninsula, Russia #Earthquake, @cageosurvey.bsky.social documented #tsunami damage at Crescent City Harbor. 🌊

Dock H shifted as surges offset 30” pilings. Metal flaps jammed between sections, snapping cables & even sparking electrical explosions. 💥
calconservation.bsky.social
After the July 29 M8.8 #KamchatkaQuake, @cageosurvey.bsky.social scientists documented #tsunami impacts at Dana Point. Orange County Sheriff Harbor Patrol reported surges up to 10–12 mph rushing in/out, damaging a bait barge & challenging vessels in the harbor.

Data helps refine CA hazard #maps.
calconservation.bsky.social
Now hiring: Land Conservation Planner (Associate Environmental Planner) in Sacramento! Join the Division of Land Resource Protection to protect California farmland. Experience in local land use planning + basic GIS encouraged. Leg. analysis a plus. Apply: calcareers.ca.gov/CalHrPublic/...
calconservation.bsky.social
The July 29 M8.8 Kamchatka Peninsula #earthquake triggered a #tsunami advisory along CA’s coast. @cageosurvey.bsky.social scientists surveyed sites, incl. Pillar Point Harbor, where watermarks showed surges raising/lowering boat ramps overnight. Data improves hazard models, maps & planning.
calconservation.bsky.social
After a tsunami advisory is lifted, geologists are on the frontlines studying the aftermath. CalConservation Dir. Lucchesi joined State Geologist Lancaster & @cageosurvey.bsky.social in Eureka, gathering evidence from the July 29 CA tsunami to build maps & tools that help communities prepare.
calconservation.bsky.social
CalConservation joined Pajaro Valley Water Management
to celebrate the completion of the College Lake Water Supply Project in #Watsonville.

Funded by our Multi-Benefit Land Repurposing program this project reduces groundwater overdraft, slows seawater intrusion, & supports local farms.