Skip to main content
x
After a wildfire, how intense does rainfall need to be to cause a debris flow?
Monitoring precipitation and post-wildfire debris flows in mountains of the arid Southwest U.S.
Earthquakes, volcanoes, floods, tsunamis and landslides in the Western U.S.: the role of state geological surveys
State geological surveys play a pivotal role in identifying, evaluating and communicating geologic hazards to their state’s constituents.
I17-Landslide Post - Part IV: Hy179 and I17 on the western edge of the Mormon Mountain volcanic field
Landslide deposits on the north slope of Verde Valley near the interchange of I-17 and AZ 179.
New digital geologic maps encompass gold/silver mining districts of Mohave County
AZGS releases geologic maps for the Secret Pass 7 ½' Quadrangle and the southern part of the Union Pass 7 ½' Quadrangle, Mohave County, Arizona.
Reaching beyond the geosciences choir with social media
AZGS uses social media and web resources to reach beyond our native stakeholders to a broader public audience.
Examining a small rockfall along the I-17 corridor
A summary of observations of a small-volume rockfall along Highway I-17 southbound, near mile-marker 250.
Google Earth Tour: The Faults of Flagstaff, Arizona
A 4-minute Google Earth flight examining the Lake Mary and Cataract Creek Fault systems near Flagstaff, Arizona.
10 Earthquakes that Rattled Arizona
'Ten earthquakes that rattled Arizona', illustrates that Arizona has earthquakes and the potential for damaging, even life-threatening, earthquakes.
ML 3.6 Earthquake near Duncan/Safford in southeastern Arizona

At 10:01 a.m. on 27 April 2019, Duncan, Arizona and environs were rocked by an ML 3.6 earthquake. AZGS Research Geoscientist J.Y. Ben-Horin filed this preliminary report.

Rapid infilling of a fresh earth fissure in southern Pinal County, Arizona w/ comment by Ken Fergason
Rapid infilling of a 2-mile long fissure in the Tator Hills earth study area, Pinal County
Subscribe to geologic hazard