Data

These data, modified from Horton and San Juan (2016), are a consolidation of point and polygon features representing mine and prospect-related symbols shown on U.S. Geological Survey (USGS) 7.5- and 15-minute topographic maps from the Historical Topographic Map Collection (HTMC). This consolidation supports more accurate counts of mine features represented in the database, which are...

This data set represents laboratory measurements conducted on a suite of select 53 pegmatite and host rock samples to better spectrally characterize complex pegmatite minerals. Of these 53 samples that were measured and analyzed, this includes 24 samples collected from the Morefield Mine, Amelia County, VA, six samples from the Martin-Marietta Amelia Quarry, Amelia County, VA, three...

This release includes data collected during campaign GNSS surveys at Kīlauea and Mauna Loa Volcanoes on the Island of Hawaiʻi in 2023. It includes data from a total of 57 sites occupied from January 1 to December 31, 2023. For each site, we include its measured raw data in daily files, Receiver INdependent EXchange (RINEX) files for each day, field log sheet(s), and associated metadata...

The January-March 2023 Halema‘uma‘u eruption occurred within Kaluapele (Kīlauea’s summit caldera) beginning on January 5 and ending on March 7 (Mulliken et al. 2024). This eruption reoccupied a previously active vent in the western side of the lava lake, as well as opening additional new vents on the eastern side of the lake. Field crews from the U.S. Geological Survey’s Hawaiian Volcano

The September 2023 Halema‘uma‘u eruption began on September 10 and ended on September 16 (~1 week; Mulliken et al. 2024). Field crews from the U.S. Geological Survey’s Hawaiian Volcano Observatory collected tephra samples from fissures that had opened up on an area of the caldera floor east of Halema‘uma‘u crater (see Lynn et al. 2024 for map). Air quenched spatter and tephra samples...

This data release contains input data used to test multi-scale modeling approaches for predicting water temperature in streams and rivers. The target application aims to predict stream temperature at relatively fine spatial resolution across a river basin by combining a machine learning (ML) model (optionally, with additional input data) configured at a relatively coarse spatial...

These datasets were collected by a ground penetrating radar unit installed on small Uncrewed Aircraft Systems (sUAS). Data include the two-way travel time (TWTT) for the ground surface (distance between the snow-ground interface and sUAS) and the calculated snow depth. The snow depth TWTT is defined as the time duration in nanoseconds that the electromagnetic wave takes to travel from...

This dataset is comprised of cyanotoxin concentrations from whole water cyanotoxin samples collected at water quality stations in the Sacramento-San Joaquin Delta, beginning in 2020. Cyanotoxin congeners were measured from whole water cyanotoxin samples within the cyanotoxin classes: microcystins, anatoxins, cylindrospermopsins, saxitoxins, anabaenopeptins, and nodularin. Concentrations...

We developed a methodology to estimate maximum CO2 injection rates in subsurface layers across wide geographic areas using inverse modeling-based optimization techniques. We first defined geographic areas where groundwater was too saline to meet the standard for drinking water and where sufficient confining units existed above and below the injection layers. We then assumed concurrent...

This dataset contains 212 geotagged photographs documenting landslides and other ground failure triggered by the February 2023 Kahramanmaraş, Türkiye earthquake sequence. The photographs were primarily taken by USGS scientists during field reconnaissance conducted with Turkish colleagues from 10-20 June 2023. The primary objective of the reconnaissance was to identify and investigate...

Riverbed grain-size is an important indicator of geomorphic and ecological processes and conditions, as it provides a key building block for channel form and benthic aquatic habitats. Understanding the distribution of riverbed sediment throughout a basin can help inform a variety of river and ecosystem management questions. This dataset provides estimates of median riverbed grain-sizes...

The U.S. Geological Survey (USGS), in cooperation with the Mississippi Department of Environmental Quality (MDEQ), have developed a high-resolution inset groundwater flow model for the Mississippi River delta as part of an interdisciplinary collaboration, coordinated by the Mississippi Alluvial Plain (MAP) project to provide a tool that stakeholders can use to support water resources...