Data

This data release provides a single 8-bit grayscale GeoTIFF orthomosaic of Semisopochnoi Island, in Aleutian Archipelago of Alaska (georeferenced in NAD 1983 UTM Zone 60N; EPSG:3373). The orthomosaic was derived from 31 black and white single frame aerial photographs taken in 1952. Also included are the non-georeferenced scans of the original aerial photographs.

A combined soil water balance, groundwater flow and stream temperature model was developed to simulate stream temperature under historical and future conditions. Soil-Water-Balance code was used to estimate net infiltration past the root zone and surface runoff, which were applied to a transient, three-dimensional MODFLOW 6 model to simulate the water budget for Beaver Creek and the...

The effects of high- and low-flow conditions on biological communities in Alabama streams were investigated by utilizing data on benthic macroinvertebrates, fish communities, hydrology, land use, and water quality. Biological data from streams and rivers in the Mobile River basin and other Gulf Coast drainages was collected from 278 sites between 1999 and 2014. These sites' upstream...

The U.S. Geological Survey, in cooperation with Colorado Springs Utilities, has been collecting topographic data annually since 2012 at 10 study areas along Fountain Creek, Colorado. The 10 study areas are located along Fountain Creek between Colorado Springs and the confluence of Fountain Creek and the Arkansas River in Pueblo. This data release presents topographic survey data, Light...

This data release is for all native bee and plant records collected at four national parks in Maryland and Virginia, 2021 and 2022. The purpose of the study was to document the floral resources and native bees that depend on them within variously-managed park grasslands, with the goal of providing managers with information that will help them maximize pollinator habitat while...

The U.S. Geological Survey, in cooperation with the U.S. Department of Energy (DOE) and Naval Reactor Facilities (NRF), conducted single-well aquifer tests in the eastern Snake River Plain (ESRP) aquifer on newly constructed wells, NRF-17 (Alias name USGS 151, Site ID 433846112540701) and NRF-18 (Alias name USGS 152, Site ID 433906112553401). Water level, barometric pressure, air...

Groundwater in the arid Mountain Home area is vital to agricultural, municipal, industrial and other water users who are concerned about declining groundwater levels. The U.S. Geological Survey, in cooperation with the Idaho Department of Water Resources, developed a hydrogeologic framework to provide a conceptual understanding of groundwater resources in the Mountain Home area, which is...

Climate change is a primary threat to biodiversity, but for most species, we still lack information required to assess their potential vulnerability to changes. Climate change vulnerability assessment (CCVA) is a widely-used technique to rank relative vulnerability to climate change based on species distributions, habitat associations, environmental tolerances, and life-history traits...

The U.S. Geological Survey (USGS) National Uncrewed Systems Office (NUSO) supported the USGS National Cooperative Geologic Mapping Program’s Geoheritage Sites of the Nation Project in July of 2024 with the collection of UAS-based high-resolution imagery of the Marsh-Felch Quarry site at the Bureau of Land Management (BLM) Garden Park Fossil Area. One of the most complete dinosaur...

This data release provides satellite images used to test a method for inferring image acquisition time from shadow orientation. For many applications, such as linking remotely sensed data to streamflow recorded at a gaging station, knowing the time an image is acquired is important, but such metadata often is not available. The sundial method is a simple means of inferring image...

This data release makes available the data used to test a method for remote sensing of river discharge based on critical flow theory. In rivers where flow conditions are near critical and well-defined standing waves are present, simple measurements of the wavelengths of the standing waves and the width of the channel made using readily available image data can be used to infer river...

This data release includes metadata and tabular data that documents the distribution of yellow crazy ants (Anoplolepis gracilipes) across Wake Atoll. The three islands that comprise the atoll were systematically searched by hand. The dataset describes the outcome of searching 3,675 cells, each 50 x 50 m in size, during 6-21 October 2023. .