United States of America
Herring River Water Quality
The U.S. Geological Survey (USGS) New England Water Science Center installed, operated, and maintained surface water-quality sites at the Chequessett Neck Road dike on the Herring River from November 2015 through September 2018.
Short-term Induced Seismicity Models
2018 United States (Lower 48) Seismic Hazard Long-term Model
The 2018 Update of the U.S. National Seismic Hazard Model defines the potential for earthquake ground shaking for various probability levels across the conterminous United States and is applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The updated model represents an assessment of the best available science in earthquake...
USGS Streamgaging Network
The USGS Groundwater and Streamflow Information Program supports the collection and (or) delivery of both streamflow and water-level information for more than 8,500 sites and water-level information alone for more than 1,700 additional sites. The data are served online—most in near realtime—to meet many diverse needs.
San Francisco Bay Area – SF Peninsula (BALT4) Site near Pacifica, CA
San Francisco Bay Area – SF Peninsula (BALT3) Site near Brisbane, CA
Alaska
Probabilistic seismic hazard maps have been prepared for Alaska portraying ground motion values (peak ground acceleration and spectral amplitude at periods of 0.2, 0.3 and 1.0 seconds) at probabilities of exceedance of 2% and 10% in 50 years. Preparation of these maps followed the same general strategy as that followed for the U.S.G.S. seismic hazard maps of the contiguous United States,...
San Francisco Bay Area – Marin County (BALT2) Site near San Rafael, CA
U.S. Seismic Hazard Maps – Puerto Rico and the U.S. Virgin Islands, Samoa and the Pacific Islands, and Guam and Northern Mariana Islands
Seismic hazard maps for Puerto Rico and the U.S. Virgin Islands, Samoa and the Pacific Islands, and Guam.
Vs30 Models and Data
The following resources are available for Vs30 (the time-averaged shear-wave velocity to 30 m depth) models and data.
Drivers and Impacts of North Pacific Climate Variability
Climate model forecasts indicate an increase in extreme hydrologic events, including floods and droughts, for California and the western U.S. in the future. To better understand what the consequences of this future change in climate may be, USGS scientists are studying the frequency, magnitude, and impacts of past hydroclimate variability and extremes in the region. This project produces well-...
Managed Areas
A delineation of managed areas (Federal, State, tribal, and military lands) from the USGS National Atlas was overlaid on the topographic change inventory. Note that this representation of managed lands is from a small-scale map source and does not include all Federal lands, while others are generalized. About 11 percent of the change polygons fall within the general boundaries of the managed...