All Data

This dataset contains long-term measurements of red spruce-northern hardwood ecotone forests in the central Appalachian Mountains. To evaluate long-term dynamics in unmanaged red spruce–northern hardwood forests, ten ecotone transects were installed in 1992-1994 across the central Appalachians. The ten ecotone transects were remeasured in 2003-2005 and 2023-2025 to assess post...

This data release contains results from 2019-2023 for bed material and suspended sediment samples collected at USGS 07374525 Mississippi River at Belle Chasse gage in association with the Louisiana Coastal Protection and Restoration Authority, Lowermost Mississippi River Management Program. Concentration, percent fines and grain size analysis on bed material and suspended sediment...

These data showcase information for aga or Mariana crows (Corvus kubaryi) necropsied from Rota and Guam between 1993-2014, along with histopathology findings.

This dataset contains level, temperature, and conductivity data collected by scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center (SPCMSC) to investigate submarine groundwater discharge on the West Florida Shelf at sample sites located in three areas of Florida: Indian Rocks Beach (IRB), Nature Coast near Hudson (NC), and Venice Headlands...

This dataset includes information from a yellow perch (Perca flavescens) tagging experiment, where the goal was to evaluate tag retention rates, and impact of tagging on growth, condition, and survival. Fish were held in a recirculating aquaculture system (RAS) over a 168-day period to evaluate four external tag types including loop, ring, streamer, and T-bar anchor tags. Data were...

This data release contains the results of three-dimensional, probabilistic, categorical groundwater salinity mapping of the alluvial and Tulare aquifers near areas of oil and gas development in the southwestern San Joaquin Valley of California. These results were derived from airborne electromagnetic (AEM) survey data collected between 2016 and 2018 in areas hydrogeologically...

The Alaska Volcano Observatory conducted overflights of Shishaldin Volcano, Alaska, in July–August 2024 to characterize the morphological changes to the summit area following the 2023 and 2019–2020 eruptions. Oblique airphotos were taken during helicopter overflights on July 30 and August 1. The photos were processed with structure-from-motion (SfM) photogrammetric methods to derive a...

A campaign microgravity network was established between Vancouver, Washington, and Mount Hood, Oregon, in 2021 and has been measured at least annually, and sometimes more often, in subsequent years. The purpose of the network is to assess changes in gravimeter calibration, as well as to monitor potential gravity changes related to subsurface magmatic or hydrothermal processes at Mount...

This data release provides datasets for the conterminous United States (CONUS), characterizing rapid transitions between hydrological extremes, drought-to-flood (DtF) and flood-to-drought (FtD), over 1981–2024. The datasets include event catalogs, transition catalogs, and comparison tables used to assess prevalence, timing, rapidity, and impactfulness of hydrologic transitions and their...

This data release provides integrated datasets for modeling streamflow and water presence across the HJ Andrews Experimental Forest stream network in western Oregon. The data include daily meteorological drivers from GRIDMET (precipitation, temperature, humidity, radiation, wind speed, evapotranspiration, vapor pressure deficit), observations of stream discharge and wet/dry status from...

Surface water samples were collected from two basins included in the Next Generation Water Observing System network. Six sites were within the Upper Colorado (UCOL) basin, of which three sites (Fraser River at Tabernash, 09027100; Colorado River at Windy Gap, 09034250; Colorado River near Cameo, 09095500) were equipped with Turner Designs C6P fluorometers for continuous fluorescence...

Brown bullhead were collected from seven sites in Lake Memphremagog in Vermont and Quebec, Hermon Pond in Maine and Village Pond in New Hampshire. Both visibly normal and lesioned adult bullhead were collected at each site. Biological data collected included length, weight, sex, age, condition factor and presence or absence of non-raised and raised black lesions. Plasma from five sites...