Data

Groundwater-quality data were collected from 748 wells as part of the National Water-Quality Assessment Project of the U.S. Geological Survey National Water-Quality Program from May 2012 through December 2013. The data were collected from four types of well networks: principal aquifer study networks, which assess the quality of groundwater used for public water supply; land-use study networks, whi

This data package contains three tables: avian counts by species, habitat type, a covariate information used for analysis of bird surveys conducted between 2012 and 2014 on the Seward Peninsula, Alaska, as part of the USGS Changing Arctic Ecosystems Initiative. We conducted 1,208 point counts on 12 study blocks from 2012-2014 in northwestern Alaska, using repeated surveys to account for imperfect

This dataset was used to summarize and analyze the mortality factors recorded on dead trees in the Sierra Nevada Forest Dynamics Plot Network, which is managed by the Sequoia and Kings Canyon Field station of the U.S. Geological Survey's Western Ecological Research Center. Each row of the dataset represents an individual dead tree. These are dead trees that were recorded in the network from 1998 t

This dataset contains fatty acid data expressed as mass percent of total fatty acids for several species potentially preyed upon by yellow-billed loons. These data were utilized in a quantitative fatty acid signature analysis to estimate the diet of yellow-billed loons nesting on the Arctic Coastal Plain of Alaska (Haynes et al. 2015).

This dataset presents information about mineral commodity exporting ports relating to the mineral industries of Latin America and the Caribbean. Port data records were originally derived from the National Geospatial-Intelligence Agency's World Port Index, with additional research conducted by the Material Flow Analysis section of the U.S. Geological Survey's (USGS) National Minerals Information Ce

This dataset presents information about exploration sites relating to the mineral industries of Latin America and the Caribbean. Exploration sites include sites in active exploration status, sites with feasibility work being performed or planned, exploration at a producing mine for a mine expansion, or sites that are approved for or under development but not yet at the producing stage. Relevant da

The NASA SWOT satellite, which is scheduled for launch in 2020, will monitor the earths fresh water with better resolution and precision than what had previously been possible for a space-based platform. The primary SWOT measurements will be used to generate estimates of river discharge that are meant to obtain river fluxes globally at high accuracy and reach lengths of tens of kilometers, even in

A long-term study of the geomorphic history of the lower Rio Puerco arroyo in north-central New Mexico included the collection of high-precision (Real-time kinematic) GPS survey data, registration and rectification of historical aerial photographs, an aerial LiDAR survey, and acquisition of post-flood satellite imagery. Mapping of geomorphic features from the aerial photographs and satellite image

Community composition data for assessing fish populations in headwater streams of the Adirondack Mountains, New York, USA. Data were collected to assess fish communities and estimate population size and biomass for each species at each sampling site. All data collected from western portion of Adirondack Park or immediately adjacent to it. Each row represents one individual fish. This spreadsheet c

The Midwest Stream Quality Assessment is the first of several regional studies that are being conducted as part of the Regional Stream Quality Assessment (RSQA) project, a component of the Cycle 3 National Water Quality Assessment (NAWQA) project. The MSQA was a collaborative study amongst NAWQA, the USGS Columbia Environmental Research Center (CERC), and the USEPA National Rivers and Streams Asse

This dataset contains information on the physical traits and environmental tolerances of plant species occurring along the lower Colorado River through Grand Canyon. Due to the unique combination of plant species within the Grand Canyon, this flora shares species with many riparian areas in the western U.S.A. and represents obligate wetland to obligate upland plant species. Data for the matrix wer