Data and Tools

Science Datasets

The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.

Filter Total Items: 12,407
Date published: January 1, 2017

Flow direction from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database -- Africa

This dataset contains the Flow Direction (FD) for Africa from the Hydrologic Derivatives for Modeling and Analysis (HDMA) database. The FD data were developed and distributed by processing units. There are 19 processing units for Africa. The distribution files have the number of the processing unit appended to the end of the zip file name (e.g. af_fd_3_2.zip contains the FD data for uni

Date published: January 1, 2017

Isotope concentrations in different mayfly life stages

This release is for data on Zinc concentrations and isotopic signatures of an aquatic insect (mayfly, Baetis tricaudatus). Mayflies were exposed to an aqueous zinc concentration gradient in a laboratory experiment. Zinc concentrations were measured in water, algae (mayfly food), and different mayfly lifestages. Natural abundances of carbon and nitrogen isotopes were also measured

Date published: January 1, 2017

Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P8 from 1980

Orthorectified image from aerial photograph of wetland P8 in the Cottonwood Lake Study Area, Stutsman County, North Dakota. This image is part of a collection of photographs of the study area acquired during July and early August from 1975 to 2015.

Date published: January 1, 2017

Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P7 from 1991

Orthorectified image from aerial photograph of wetland P7 in the Cottonwood Lake Study Area, Stutsman County, North Dakota. This image is part of a collection of photographs of the study area acquired during July and early August from 1975 to 2015.

Date published: January 1, 2017

Location of bottom photographs along with images collected in 2012 by the U.S. Geological Survey in the Connecticut River during field activity 2012-024-FA (point shapefile and JPEG images).

A geophysical and geological survey was conducted at the mouth of the Connecticut River from Old Saybrook to Essex, Connecticut, in September 2012. Approximately 230 linear kilometers of digital Chirp subbottom (seismic-reflection) and 234-kilohertz interferometric sonar (bathymetric and backscatter) data were collected along with sediment samples, riverbed photographs, and (or%

Date published: January 1, 2017

Intensity of mean groundwater withdrawals from the Floridan aquifer system by county, 1995–2010

Values represent mean groundwater withdrawals from the Floridan aquifer system for the period 1995–2010 normalized by county area in square miles. Withdrawal intensity provides a better basis for comparison of withdrawals between counties, whose sizes differ by an order of magnitude.

Date published: January 1, 2017

Hydrologic and Landscape Database for the Cahaba River National Wildlife Refuge and Contributing Watersheds, Alabama

This hydrologic and landscape database was developed by the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service for the Cahaba River National Wildlife Refuge and contributing watersheds in Alabama. The database was developed as an assessment and evaluation tool to use in examining refuge-specific hydrologic patterns and trends as related to water availability and...

Date published: January 1, 2017

Argon geochronology data from the Hall Creek caldera, Toiyabe Range, Nevada

The magmatic, tectonic, and topographic evolution of what is now the northern Great Basin remains controversial, notably the temporal and spatial relation between magmatism and extensional faulting. This controversy is exemplified in the northern Toiyabe Range of central Nevada, where previous geologic mapping suggested the presence of a caldera that sourced the late Eocene (34.0 mega-a

Date published: January 1, 2017

Digital Orthorectified Aerial Image of Cottonwood Lake Study Area Wetland P11 from 1992

Orthorectified image from aerial photograph of wetland P11 in the Cottonwood Lake Study Area, Stutsman County, North Dakota. This image is part of a collection of photographs of the study area acquired during July and early August from 1975 to 2015.

Date published: January 1, 2017

Cottonwood Lake Study Area-Wetland Vegetation Zones-2004

Spatial polygons of vegetation zones in 2004 for wetlands; P1, P2, P3, P4, P6, P7, P8, P11, T1, T2, T3, T4, T5, T6, T7, T8, and T9 within the Cottonwood Lake Study Area, Stutsman County, North Dakota. Created from a collection of digital orthorectified images from aerial photographs of the study area acquired during 2004 using Stewart and Kantrud classificati

Date published: January 1, 2017

GeoTIFF image of the backscatter intensity of the sea floor of the Hudson Shelf Valley (12-m resolution, Mercator, WGS 84)

The Hudson Shelf Valley is the submerged seaward extension of the ancestral Hudson River drainage system and is the largest physiographic feature on the Middle Atlantic continental shelf. The valley begins offshore of New York and New Jersey at about 30-meter (m) water depth, runs southerly and then southeasterly across the Continental Shelf, and terminates on the outer shelf at about 85-

Date published: January 1, 2017

G-2938 : Synthetic Seismogram Data for Correlation Between Seismic-Reflection Profiles and Well Data, Broward County, Florida

The data set consists of time, depth, reflection coefficient synthetic, sonic velocity, density, and amplitude used to create synthetic seismogram - G-2938, (BF-1), Broward County, Florida