All Data

This data release contains P- and S-wave velocity data from logs of nine wells in three large sedimentary basins in the San Francisco Bay region. The logs were collected between 2000 and 2006 for the U.S. Geological Survey under contract by R.A. Steller of GeoVision using an Oyo suspension logging system. Well depths range from 215 to 407 meters and sample spacing in the wells ranges...

Composite 30-m resolution bathymetric surface of northern Cascadia Margin offshore Washington. The surface was generated from various publicly available bathymetric datasets available in the region. The surface is available as a geoTIFF file.

Assessing the distribution and abundance of both predator and prey (forage) fish species is a cornerstone of ecosystem-based fishery management and supports decision making that considers food-web interactions. In support of binational Great Lakes fishery management, the objectives of this survey were to: provide estimates of densities of key forage and predator species in the western...

This data release is composed of point cloud data from a terrestrial lidar survey, GNSS survey data, and derivative raster data. The data were collected on November 09, 2023. This survey was used to characterize a debris flow basin near El Portal, California for the National Park Service.

Lake Superior is historically a nutrient poor lake that does not typically support significant cyanobacterial blooms. However, the lake has been experiencing an increase in blooms in the western portion of the basin recently. The largest blooms documented have occurred after recent major flooding events, indicating that nutrients transported to the lake during these events may be a...

A coupled hydrodynamic and sediment transport model was developed to simulate the dispersal of fine-grained sediment from beach nourishment projects near Santa Barbara, California. The model simulations were used to quantify the size and extent of sediment plumes resulting from nourishment projects and evaluate the potential impacts of beneficial use of fluvial sediment captured in...

The City of Flagstaff in northern Arizona utilizes Upper Lake Mary reservoir for approximately 25 to 30 percent of its water supply and understanding the detailed topography of the storage basin is essential for effective water management. The U.S. Geological Survey incorporated modern bathymetric and ground survey techniques to construct a 1-meter (1m) resolution digital elevation model...

In the San Antonio Creek Valley Watershed (SACVW) of Santa Barbara County, California, climatic conditions, surface-water diversions, and groundwater withdrawals potentially affect water availability, magnitude of streamflow in San Antonio Creek, and the extent and quality of protected species habitat in the Barka Slough wetland. Future climate in central California may have warmer and...

This data release included data and metadata documenting morphological measurements and sex of Brown Treesnakes (Boiga irregularis; BTS) in 18 sites spanning six habitat types in Guam collected between 2010 and 2012 including measurements of relevant reproductive structures.

This data set describes results for two laboratory experiments to validate a quantitative PCR assay for the assessment of antimicrobial resistance genes in surface waters. Data are also provided for the application of the assay surface water samples collected from three national parks in Alaska.

Home Owners’ Loan Corporation (HOLC) maps illustrated patterns of segregation in United States cites in the 1930s. As the causes and drivers of demographic and land use segregation vary over years, these maps provide an important spatial lens in determining how patterns of segregation spatially and temporally developed during the course of the past century. Using a high-resolution land...

We tested 28 fin clips for DNA of Goldfish (Carassius auratus) and Prussian Carp (Carassius gibelio) following published assay methods. Results are reported as cycle threshold (Cq) values generated using real-time PCR.