10,480 Works

poscrptR

Micah C Wright, Joseph A Stewart, Phillip J Van Mantgem, Derek J.N. Young, Kristen L Shive, Haiganoush K. Preisler, Adrian J Das, Nathan L Stephenson, Jon E Keeley, Hugh D. Safford, Kevin R. Welch & James.H. Thorne
poscrptR is a simple R package with the sole purpose of distributing a shiny app for predicting post-fire conifer regeneration. Learn more about shiny apps here.

Geospatial data representing wells open to, and 2013 potentiometric-surface contours of, the confined aquifers of the New Jersey Coastal Plain

Stephen J Cauller & Alison D Gordon
A study conducted by USGS in cooperation with the New Jersey Department of Environmental Protection, measured and evaluated water levels in 10 confined aquifers of the New Jersey Coastal Plain to provide a regional overview of groundwater conditions during the fall of 2013. Water levels were measured in 987 wells in New Jersey, and parts of Pennsylvania and Delaware. Potentiometric-surface maps were prepared for, in ascending order of age, confined Cohansey aquifer of Cape May...

Streamflow input datasets and model results using the Weighted Regressions on Time, Discharge, and Season (WRTDS) Models to estimate total organic carbon and other constituent concentrations in eight rivers in Connecticut, water years 1973 to 2019

Thomas G Huntington & Michael E Wieczorek
This data release provides data in support of an assessment of changes in slope of the concentration-discharge relation for total organic carbon in eight major rivers at gaging stations in Connecticut from October 1972 to September 2019 (U.S. Geological Survey water years 1973 to 2019). The rivers include the Connecticut at Thompsonville (01184000), Housatonic at Stevenson (01205500), Quinebaug at Jewett City (01127000), Farmington at Tariffville (01189995), Shetucket at Willamantic (01122500), Naugatuck at Beacon Falls (011208500),...

Geospatial data and surface-water model archive for evaluation of streamflow extent and hydraulic characteristics of a restored channel at Soldier Meadows, Black Rock Desert - High Rock Canyon Emigrant Trails National Conservation Area, Nevada

Christopher M Morris
This U.S. Geological Survey data release consists of a geospatial dataset containing information on estimated streamflow extent, stream velocity, and stream depth at Soldier Meadows Black Rock Desert - High Rock Canyon Emigrant Trails National Conservation Area, Nevada, and the data acquired and processed to support the estimation of those attributes. Supporting datasets include topographic survey data collected using a global navigation satellite system (GNSS) in Soldier Meadows from August 13-15, 2019, and an archive...

The Louisiana Amphibian Monitoring Program from 1997 to 2017: Data

Jacoby Carter
Call observation data from the Louisiana Amphibian Monitoring Program (LAMP). Each route has 10 stops. The routes are in one of 3 Louisiana regions (north, south and Florida parishes). Routes are identified by number and name. Call observations are categorical number 0 (not heard) through 3 (full chorus with overlapping calls). Each route has 10 stops. A full description of data collection can be found in the publication Carter, Johnson, Boundy and Vermillion 2021. The...

Environmental DNA surveillance data for USGS streamgage sampling in the Columbia River Basin, 2018

Adam J Sepulveda
Environmental DNA quantitative PCR results for water samples collected in 2018 at USGS streamgages downstream of Columbia River Basin reservoirs that are considered to have moderate to high suitability for invasive dreissenid mussels. Water samples were tested for DNA of dreissenid mussels, kokanee salmon, and yellow perch. This is version 1.1 of this data release. The Kokanee_Perch_eDNA data and metadata files have been revised to correct for improper attribution of 16 samples. For access to...

Pika presences in the western USA, 2012-2015

Erik A. Beever & Aaron N. Johnston
USGS researchers surveyed talus patches across the western USA, in conjunction with numerous partners during 2012-2015, inclusive. Data are locations at which American pikas were detected, via either vocalizations (C), fresh haypile (HP), or sighting (S).

Individual specific hybridization data from the upper Snake River, Wyoming from 2014

Ryan Peter Kovach
Dataset includes individual-specific genetic data describing the extent of hybridization between Yellowstone cutthroat trout (Oncorhynchus clarkii bouvieri) and rainbow trout (O. mykiss) in Wyoming.

Glacier margin time series (1966, 1998, 2005, 2015) of the named glaciers of Glacier National Park, MT, USA

Daniel B Fagre, Lisa A. McKeon, Kristina A. Dick & Andrew G. Fountain
This dataset was created to develop a time series and history of glacier recession in Glacier National Park (GNP), Montana, USA. The dataset delineates the 1966, 1998, 2005 and 2015 perimeters of the 37 named glaciers of Glacier National Park and two additional glaciers on U.S. Forest Services Flathead National Forest land (the Bob Marshall Wilderness Complex) which borders GNP to the south. Establishing rates of glacier retreat, using the decreasing area of glacier ice,...

Software Supplement to accompany "Estimating Species-Environment Relationships with Non-ignorable Sampling Designs"

Kathryn M Irvine, Thomas J. Rodhouse, Wilson J. Wright & Anthony R. Olsen
R code to fit models with and without sample weights and simulation code

Till geochemistry from rotosonic cores in Minnesota, USA

Melinda L Erickson & Laurel G Woodruff
Samples for analysis were selected from 1) archived rotosonic cores drilled by the Minnesota Geological Survey and archived at the Lands and Minerals Drill Core Library, Minnesota Department of Natural Resources, Hibbing, Minnesota, USA; or b) freshly collected rotosonic cores, collected on-site at the time of coring. Cores in the sample archive are stored in wooden core-boxes in ambient air. Cores have supporting geology, stratigraphy, geochemistry, and hydrogeology data as published in County Geologic Atlases,...

Field measurements of flow depth and optical image sequences acquired from the Salcha River, Alaska, on July 25, 2019

Carl J Legleiter & Kinzel J Paul
This data release includes field measurements of flow depth and optical image sequences acquired from the Salcha River in Alaska on July 25, 2019. These data were used to develop and test a spectrally based remote sensing technique for estimating water depth from passive optical image data. The purpose of this study was to assess the feasibility of inferring water depths from optical image sequences acquired from a helicopter hovering above the river by averaging...

Geochemical Data for Illinois Basin Coal Samples, 2015-2018 (ver. 1.1, March 2021)

Allan Kolker, Clinton T Scott, , Liliana Lefticariu, Maria Mastalerz, Agnieszka Drobniak & Anne M Scott
Researchers at the U.S. Geological Survey (USGS) and their collaborators conducted a study of the geochemical properties of coals currently produced for electric power generation in the Illinois Basin in Illinois and Indiana. The study follows from recommendations by an expert panel for the USGS to investigate the distribution and controls of trace constituents such as mercury (Hg) in Illinois Basin coals and the behavior of these constituents in coal preparation. A total of 72...

Digital Data from Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado, USA

Jonathan S Caine, Stuart A Giles & Kellie N Spence
This Data Release provides tabular and geospatial data digitized by the U.S. Geological Survey (USGS) from a U.S. Bureau of Mines (USBoM) report titled Mineral Investigation of Sangre de Cristo Wilderness Study Area, Alamosa, Custer, Fremont, Huerfano, and Saguache Counties, Colorado. The original preliminary paper report, numbered Mineral Land Assessment 65-83 (MLA 65-83; Ellis and others, 1983), presented the results of a mineral resource potential survey of areas in and around the Sangre de Cristo...

MODFLOW-2005 and SWI2 models for assessing groundwater availability in the volcanic aquifers of Kauai, Oahu, and Maui, Hawaii

Kolja Rotzoll & Scot K Izuka
Steady-state numerical groundwater-flow models were constructed for the islands of Kaua'i, O'ahu, and Maui, Hawai'i. Separate models were created for each island using MODFLOW-2005 (Harbaugh, 2005) with the Seawater Intrusion (SWI2) package (Bakker and others, 2013), which allows simulation of freshwater and saltwater in ocean-island aquifers. The purpose of the models is to enable quantification of the hydrologic effects of withdrawals and changes in climate. These effects include water-table depression, saltwater rise, and reduction of...

Model of groundwater flow, gas migration, and reactive transport in the Virgin River Basin, SW Utah

Michael R Plampin, Madalyn S Blondes, Eric L Sonnenthal & William H Craddock
To better understand the possible risks posed to shallow groundwater resources by geologic carbon sequestration (GCS), a multi-scale numerical modeling approach was invoked using the TOUGHREACT code from Lawrence Berkeley National Laboratory. The code solves coupled equations representing conservation of mass and energy on a finite difference grid to simulate multiphase, multicomponent, non-isothermal heat and mass transport in porous media. Two different two-dimensional cross-section modeling domains were constructed to improve understanding of groundwater flow and...

Hetero- and conspecifics effects on nest and chick survival for two listed species; piping plover and least tern breeding on the Missouri River, USA 2007-2016

Dustin L Toy, Michael J Anteau, Rose J Swift, Erin A Roche, Mark H Sherfy & Megan Ring
We present two tabular digital data files representing values related how the presence of hetero- and conspecifics influence nest and chick survival for two listed migratory species breeding on the Missouri River; piping plover (Charadrius melodus) and least tern (Sternula antillarum). We followed 2,507 piping plover nests, 3,251 uniquely banded piping plover chicks, 1,060 least tern nests, and 1,377 uniquely banded least tern chicks from 2007 - 2009, 2012- 2016 in the Northern Great Plains...

High-Resolution Measurements to Identify Effects of Aquatic Vegetation on Water Quality and Stratification

Elizabeth B Stumpner, Tamara E.C. Kraus, Bryan D Downing, Katy O'Donnell, Jeffrey A Hansen, Brian Bergamaschi A, Angela Hansen, Jeniffer Soto Perez, David E Ayers & John A Donovan
The dataset documents the spatial and temporal variability of nutrients and related water quality parameters at high spatial resolution in the North Delta of the Sacramento-San Joaquin River Delta of California, USA. The dataset includes surface mapping, depth profile, and discrete data for nitrate, ammonium, phosphate, dissolved organic carbon, temperature, conductivity, dissolved oxygen, and chlorophyll as well as information about phytoplankton community composition. Data-collection cruises were conducted over two time periods in July and October...

Assessing habitat change and migration of barrier islands

Nicholas M Enwright, Lei Wang, Hongqing Wang, Michael J Osland, P. S Dalyander, Rangley C Mickey, Robert L Jenkins & Elizabeth S Godsey
A barrier island habitat prediction model was used to forecast barrier island habitats (for example, beach, dune, intertidal marsh, and woody vegetation) for Dauphin Island, Alabama, based on potential island configurations associated with a variety of restoration measures and varying future conditions of storminess and sea level (Enwright and others, 2020). This USGS data release contains five habitat model predictions from the aforementioned modeling effort. These include: (1) the contemporary period (that is, 2015); (2)...

Groundwater data, predictor variables, and rasters used for predicting redox conditions in the glacial aquifer, northern continental United States

Sarah M Elliott, Melinda L Erickson, James E Reddy & Jennifer B Sharpe
This data release contains input data used in model development and TIF raster files used to predict the probability of low dissolved oxygen (DO) and high dissolved iron (Fe) in groundwater within the glacial aquifer system in the northern continental United States. Input data include measured DO and Fe concentrations at groundwater wells, and associated predictor variable data. The probability of low DO and high Fe was predicted using boosted regression tree methods using the...

Flux and Soil Data from the Alaska Peatland Experiment 2014 to 2016

Mark P Waldrop
This dataset supports a published study on the effects of permafrost thaw on greenhouse gas fluxes and microbial activities at the Alaska Peatland Experiment (APEX), part of the Bonanza Creek LTER, in interior Alaska. The dataset includes autochamber CO2 and CH4 fluxes, net ecosystem exchange, ecosystem respiration, soil temperatures, climate data, microbial qPCR data, soil physical chemistry, soil extract chemistry, and rates of microbial activities, both from lab incubations, and rates derived from an isotope...

Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Puget Creek and Dickman Mill Park, Ruston Way, Tacoma, WA, June 2019

Joshua B Logan, Eric E Grossman, Nathan R VanArendonk & Liam Horner
An unmanned aerial system (UAS) was used to acquire high-resolution imagery of the intertidal zone at Puget Creek and Dickman Mill Park in Tacoma, Washington on June 3, 2019. This imagery was processed using structure-from-motion (SfM) photogrammetric techniques to derive high-resolution digital surface models (DSM), orthomosaic imagery, and topographic point clouds. In order to maximize the extent of the subaerially exposed area, the survey was timed to coincide with a spring low tide occurring at...

Aerial imagery and structure-from-motion data products from UAS survey of the intertidal zone at Post Point, Bellingham Bay, WA, June 2019

Joshua B Logan, Eric E Grossman, Nathan R VanArendonk & Avery FG Maverick
An unmanned aerial system (UAS) was used to acquire high-resolution imagery of the intertidal zone at Post Point in Bellingham Bay, Washington on June 6, 2019. This imagery was processed using structure-from-motion (SfM) photogrammetric techniques to derive high-resolution digital surface models (DSM), orthomosaic imagery, and topographic point clouds. In order to maximize the extent of the subaerially exposed area, the survey was timed to coincide with a spring low tide occurring at approximately 20:59 Universal...

Extended Seasonal Discharge Records for Selected Streamgage Sites in the Fortymile River Basin, Alaska, 1976-2020

Janet H Curran
Daily mean discharge is needed for water resource management of selected streams in the Fortymile River Basin. The U.S. Geological Survey, in cooperation with the U.S. Bureau of Land Management, developed a technique for estimating seasonal discharge at two short-record streamgage sites in the basin and evaluated the accuracy of the estimated records. Daily mean discharge values were estimated for May 15-September 30 for 1976-82 and 2006-18 for the U.S. Geological Survey streamgage sites 15330000,...

SHRIMP U-Pb geochronologic data for zircon and titanite from Mesoproterozoic rocks of the St. Francois Mountains terrane, southeast Missouri, U.S.A.

John N Aleinikoff
These data are for a regional geochronologic study of Mesoproterozoic rocks in the St. Francois Mountains, southeast Missouri. Zircon, plus one sample of titanite, from fifty samples of metaigneous rocks were dated by sensitive high resolution ion microprobe (SHRIMP).

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