USGS Responds to Hurricane Isaac
Earthquakes
Did You Feel It?
Significant Earthquakes
M 3.4, 0km WSW of Beverly Hills, California
Friday, September 07, 2012 07:03:09 UTC
M 5.6, 1km SW of Jiaokui, China
Friday, September 07, 2012 04:16:30 UTC
M 5.6, 6km SSW of Jiaokui, China
Friday, September 07, 2012 03:19:42 UTC
WaterWatch - Current Streamflow Conditions
Landslide monitoring
Current Volcano Alerts
Geomagnetism
Landsat (EarthNow!)
Natural Hazards Support System
USGS Emergency Management
Tue, 28 Aug 2012
In response to Hurricane Isaac, USGS has deployed several hundred storm surge sensors to collect information about the effects of Isaac on the Gulf Coast.
Mon, 27 Aug 2012
Join us on September 5th in Reston, VA for a free public lecture on the 2011 Virginia earthquake!
Tue, 21 Aug 2012
7 p.m.—Public lecture (also live-streamed over the Internet)
View all Science Picks
Quick look: Data were collected by the U.S. Geological Survey from 2003 through 2008 in the Eastern San Joaquin Groundwater Subbasin, 80 miles east of San Francisco, California, as part of a study of the increasing chloride concentrations in groundwater processes. Data collected include geologic, geophysical, chemical, and hydrologic data collected during and after the installation of five multiple-well monit Groundwater data for selected wells within the Eastern San Joaquin Groundwater Subbasin, California, 2003-8(Released: Wed, 12 Sep 2012 00:00 -0500)
Quick look: Closure of Glen Canyon Dam reduced sand supply to the Colorado River in Grand Canyon National Park by about 94% while its operation has also eroded the park's sandbar habitats. Three controlled floods released from the dam since 1995 suggest that sandbars might be rebuilt and maintained, but only if repeated floods are timed to follow tributary sand deliveries below the dam. Monitoring data show t Abiotic & biotic responses of the Colorado River to controlled floods at Glen Canyon Dam, Arizona, USA(Released: Tue, 11 Sep 2012 00:00 -0500)
Quick look: The influences of geologic and climatic factors on erosion and sedimentation processes in rivers draining the western flank of the California Coast Range are assessed. Annual suspended, bedload, and total sediment fluxes were determined for 16 river basins that have hydrologic records covering all or most of the period from 1950 to 2006 and have been relatively unaffected by flow storage, regulati Sediment fluxes from California Coastal Rivers: the influences of climate, geology, and topography(Released: Tue, 11 Sep 2012 00:00 -0500)