Images

USGS technicians collect water samples for eDNA analysis to estimate foothill yellow-legged frog (Rana boylii) presence at historically occupied sites throughout Oregon. These data are important for assessing the species' status and conservation needs. 

A 3-4m (10-12 ft) high outcrop of basalt lava, part of a broader lava flow. These flows were erupted about 300,000 years ago following basalt dike intrusions in a rear-arc region of northern California. The eruptions of three of these flows are thought to have taken place within several hundred years of each other.

Root nodules are a symbiotic relationship between a plant and nitrogen-fixing bacteria. A symbiotic relationship is one where both organisms benefit. Nitrogen-fixing bacteria change inorganic nitrogen from the air into ammonia, a form of nitrogen most organisms can use.

Topography and bathymetry of southern Cascadia, which includes southern Oregon and northern California (seafloor depths between 200 and 3000 m are shown in the spectrum color scale from red (shallower) to purple (deeper). The land and continental shelf are shown in grayscale slope shading where darker colors represent steeper slopes.

This is a graphic from the USGS National Oil and Gas Assessment Explorer application, which allows user to drill into 70 oil and gas assessment provinces throughout the United States.

Entering Yaquina Bay, Oregon aboard the NOAA ship Rainier, approaching the Yaquina Bay Bridge with Newport Marina off to the right in the distance.

Did you know that plants can help us understand what is happening underground? Studying plants in an area can sometimes provide information about soil conditions, water availability, and water quality.

Did you know that plants can sometimes help us understand what is happening underground? Studying plants in an area can provide information about soil conditions, water availability, and water quality.

Map highlighting sampling locations of 339 Northern Spotted Owls used in Miller, et al, 2018

GeoGirls analyze volcanic sediment at the Coldwater Lake outlet.

GeoGirls take core samples at a pond near the Hummocks Trail to study groundwater transport.

Lost River suckers congregating to spawn on Sucker Springs in Upper Klamath Lake, Oregon.

The choice when issuing earthquake warnings is to: 1) issue alerts for weak shaking and potentially provide long warning times, but risk sending alerts for the many events that do not go on to produce damaging ground shaking, or 2) issue alerts only when ground shaking is expected to be damaging, with the tradeoff that the alert will be sent much later, reducing

Variability associated with streamflow permanence predictions

Stream observation points and focal basins for PROSPER project

Mean Annual Streamflow Permanence Probability

Horizontal displacements from campaign (black vectors) and continuous (red vectors, with station names given) GPS stations, as well as vertical displacements (indicated by color of GPS station symbol) near South Sister, Oregon. Length of arrow gives amount of horizontal displacement, with scale in lower left showing an arrow length

The Alsea River in the Oregon Coast Range

Scientists from the U.S. Geological Survey and Idaho Power Company collected water, sediment, and biological samples from Brownlee Reservoir as part of an ongoing, cooperative study of mercury cycling in the Hells Canyon complex of reservoirs along the Snake River bordering Idaho and Oregon.

The Snake River is the largest tributary of the Columbia River. It drains over 108,000 square miles in mainly Idaho and portions of Montana, Nevada, Oregon, Washington, and Wyoming. The climate of much of the Snake River watershed is arid or semi-arid and spring snowmelt contributes substantially to the river’s flow.

GeoGirls collect water samples and flow measurements to model the transport of volcanic sediments.