Images

Smallmouth Bass are good indicators of methylmercury exposure to humans and wildlife because they are a common, popular sport fish and eat a variety of food during their lifetime. Juvenile Smallmouth Bass – smaller than 150mm in length - eat zooplankton, or microscopic animals.

Wave reduction barriers were installed around some mesocosms to test whether reducing wind-wave action would reduce suspended sediment in the water column. 

USGS Southwest Region boundary encompassing California, Arizone, Nevada, and a small portion of Oregon overlain on a colorized digital elevation model.

Map of Southwest Region generated from ArcGIS Pro using public domain layers from AGOL at 1:20M scale.

Photograph of Summer Lake Wildlife Area, an important stopping spot for migratory birds on their spring and fall migration flights. 

The image is a composite of four screenshots comparing four USGS topographic maps. The large screenshot at the top half of the image is an area around Crater Lake, Oregon, with a 1:100K US Topo sample at full resolution.

Map showing principal aquifers (PAs) and wells that were sampled as part of a Nationwide assessment of the quality of groundwater used for public supply.  

Looking east on Bullgate Pond at sunrise with lone tule white-fronted goose (Anser albifrons elgasi) in upper right, Summer Lake Wildlife Area, near Summer Lake, Oregon.

An illustration of a mountain with water flowing from the top down to a river with smaller rivers flowing off the sides. Multiple items appear along the various rivers including leaky weirs, one rock dams, log dams, gabions, check dams, trincheras, and earthen berms. Informational bubbles appear alongside these various item in the illustration.

Route followed by a band of Nez Perce (or, in their language, Nimiipu or Nee-Me-Poo) in 1877.

A helicopter rigged with an airborne geophysical survey collecting equipment. Information collected during these surveys can help with studying critical mineral resources, natural hazards and groundwater potential. A cow is here too.

A low-flying helicopter towing a geophysical device collects scientific data on groundwater and geology. Information collected during these surveys can help with studying critical mineral resources, natural hazards and groundwater potential.

Time series showing daily vertical GPS positions from the continuous GPS station HUSB between 2001 and 2022.

Comparison of vertical GPS motion measured at station HUSB (top) with earthquake depth (bottom). Red line is a 60-day average of the cleaned GPS time series plotted in gray. Earthquakes are plotted with respect to their magnitudes. The swarm in 2004 represents the vast majority of earthquake in the vicinity of the deforming region.

Satellite radar interferogram spanning June 19, 2020, to August 13, 2021, and showing the ground motion in the direction of the satellite.

This is a landscape photo of a wildfire burn site located in Oregon, USA. Photo taken in November of 2021.

Photographs and a radiograph from a Northern sea otter (Enhydra lutris kenyoni) from Oregon, U.S.A. (A) The deceased sea otter on a beach in Oregon, U.S.A.

Locations of barred owl sightings recorded during 2015 owl monitoring activities. Barred owls were lethally removed from the areas highlighted in pink. Supporting data is found at https://doi.org/10.3133/ofr20201089.

Barred owls spread west during the 1900s and today completely overlap the range of the northern spotted owl.

Locations of barred owl sightings recorded during 2020 owl monitoring activities. Barred owls were lethally removed from the areas highlighted in pink. Supporting data is found at https://doi.org/10.3133/ofr20201089.

Bathymetry data from various sources, including newly released 2018 and 2019 multibeam data collected by the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Geological Survey (USGS), were combined to create a composite 30-m resolution multibeam bathymetry surface of the southern Cascadia Margin offshore of Oregon and northern California.