Data

These data are spatial estimates of fractional wetland area and were used to quantify wetland area change in the Davis Pond and Caernarvon Freshwater Diversion outfall areas during a 1984–2019 observation period. Trends in wetland area through time were fit using a penalized regression smooth spline. The trends are therefore generalized in time and are intended to present coarse spatial...

This dataset contains net tow and hydroacoustic data collected in the summer of 2021 in lakes Michigan and Huron to assess the spatial distribution and areal abundance of nighttime pelagic mysids (Mysis diluviana). This dataset also contains long-term secchi depth measurements collected in all five Great Lakes from 1996-2021 as environmental context to test hypotheses driving mysid...

LiDAR scans were taken using a tripod mounted Riegl VZ-400 scanning LiDAR. The tripod was set up such that the scanner was between 1 and 2.5 m tall. The VZ-400 is a near infrared (1550 nm) scanner. Geometric control was achieved, when the sky was visible, using a pair of Trimble RB GPS antennae, one mounted on the LiDAR scanner (rover) and the other setup as a base station. Before taking...

This dataset provides origin (hatchery vs. wild) and energy density (kJ g-1) of juvenile pink (Oncorhynchus gorbuscha) and chum salmon (O. keta) from the eastern Gulf of Alaska, 2010–2024. Juvenile salmon were sampled from rhinoceros auklet (Cerorhinca monocerata) diets on Middleton Island (59.4375 N, 146.3277 W) located near the continental shelf break in the Gulf of Alaska. Auklets...

This data release comprises geospatial data of historical shoreline positions and long-term (greater than 60 years) and short-term (less than 40 years) rate of change statistics from the west coast of Alaska from Cape Prince of Wales to Kotlik River for the years 1949 to 2015.

This data release presents a national cross-section (XS) database (NXSDB) of bathymetric cross-sections collected during water year (WY) 2022 (October 1, 2021, to September 30, 2022). The WY 2022 NXSDB has been approved by the U.S. Geological Survey (USGS) for publication and supersedes the provisional versions. The data were collected by hydrographers during routine site visits to...

This data release presents a national cross-section (XS) database (NXSDB) of bathymetric cross-sections collected during water year (WY) 2023 (October 1, 2022, to September 30, 2023). The WY 2023 NXSDB has been approved by the U.S. Geological Survey (USGS) for publication and supersedes the provisional version. The data were collected by hydrographers during routine site visits to...

This U.S. Geological Survey (USGS) data release is a collaborative geospatial database compiled by the USGS and participating State geological surveys, with support from the Earth Mapping Resources Initiative (Earth MRI) program. The database represents the first phase of cataloging above-ground mine waste features —such as tailings and waste rock piles— that are remnants of historical...

The U.S. Geological Survey (USGS) maintains shoreline positions for the United States coasts from various historical sources, such as aerial photographs or topographic surveys, and contemporary sources, such as lidar-point clouds and digital elevation models. Shorelines are compiled in a GIS and analyzed in the USGS Digital Shoreline Analysis System (DSAS) software to calculate rates of...

Native freshwater mussels are a substantial resource of concern to resource managers because of their contribution to aquatic ecosystems, First Foods status for Native American tribes, and general imperilment. As such, resource managers in the USFWS Lower Great Lakes Fish and Wildlife Conservation Office partnered with USGS to characterize the native freshwater mussel assemblage in the...

The Swinomish Indian Tribal Community (SITC) is reviving an ancient mariculture practice by installing the first known present-day clam garden in the United States. Clam gardens are intertidal features modified by coastal Indigenous people (e.g., creating intertidal terraces to alter beach slope and substrate) to enhance clam habitat for optimal shellfish production. Nearshore substrate

This data release (https://doi.org/10.5066/P13JNYU2) contains neutron scattering intensities of a Niobrara Formation rock sample in the presence of pressurized perdeuterated methane, perdeuterated methane-methane, and perdeuterated methane-ethane mixtures at 60 degrees C. Also provided are the densities and scattering length densities for the various fluid mixtures and modeled accessible...