8,746 Works

High-resolution (1 m) digital elevation model (DEM) of San Francisco Bay, California, created using bathymetry data collected between 1999 and 2016

Theresa A Fregoso, Bruce E Jaffe & Amy C Foxgrover
A 1-m resolution bathymetric digital elevation model (DEM) of all off San Francisco Bay was constructed from bathymetric surveys collected from 1999 to 2016. The DEM has been divided into northern and southern sections due to file size, and is available in both MLLW and NAVD88 versions. Background: In 2014 and 2015 the California Ocean Protection Council (OPC) contracted the collection of bathymetric surveys of large portions of San Francisco Bay. A total of 93...

Digital elevation model of the Nehalem Bay near Wheeler, Oregon 2019

Gabriel W Gordon, Patrick A Haluska & Brandon T Overstreet
Bathymetric data were collected by the U.S. Geological Survey (USGS) in 2019 for approximately 2.2 square kilometers of the Nehalem Bay between the Highway 101 bridge and Nehalem Bay State Park (about 6.5 kilometers) near Wheeler, Oregon. The data were collected using a Trimble R8 Global Navigation Satellite System (GNSS) receiver combined with a Seafloor Systems Hydrolite TM single-beam 200 kilohertz echosounder mounted to a motorized boat. GPS positions received corrections in real time from...

Benthic infaunal communities of Baltimore and Norfolk canyons

Craig Melville Robertson, Jill R Bourque & Amanda W Demopoulos
Submarine canyons are morphologically complex systems, acting as major conduits of organic matter along continental shelves, promoting gradients in food resources, habitat heterogeneity, and areas of sediment resuspension and deposition. Often environmental conditions within canyons can be highly distinct, particularly in different parts of the canyon and in contrast to adjacent slopes. Here we examine how biogeochemical drivers shape the differences between canyon and slope infaunal communities in Baltimore and Norfolk Canyons in the U.S....

Single-beam Echosounder bathymetry of the Nehalem Bay near Wheeler, Oregon 2019

Gabriel W Gordon, Patrick A Haluska & Brandon T Overstreet
Bathymetric data were collected by the U.S. Geological Survey (USGS) in 2019 for approximately 2.2 square kilometers of the Nehalem Bay between the Highway 101 bridge and Nehalem Bay State Park (about 6.5 kilometers) near Wheeler, Oregon. The data were collected using a Trimble R8 Global Navigation Satellite System (GNSS) receiver combined with a Seafloor Systems Hydrolite TM single-beam 200 kilohertz echosounder mounted to a motorized boat. GPS positions received corrections in real time from...

Wyoming Landscape Conservation Initiation Literature Database

Sky Bristol, Grace C Donovan & Daniel J Wieferich
The Wyoming Landscape Conservation Initiative Literature Database is a collection of publication records that reference the Wyoming Landscape Conservation Initiative (WLCI). The database was developed in an effort to provide the WLCI community with a more functional publication citation index and storage system. By maintaining the literature database, the WLCI community has the opportunity to streamline their workflow and gain further insight into the work that has been published on in regards to the WLCI...

Northern Short-tailed Shrew (Blarina brevicauda) mNOSSx_CONUS_2001v1 Habitat Map

Julie Prior-Magee & Alexa McKerrow
This dataset represents a species habitat distribution model for Northern Short-tailed Shrew. These habitat maps are created by applying a deductive habitat model to remotely-sensed data layers within a species' range.

MODFLOW2005 model used to simulate the effects of groundwater withdrawals from aquifers in Ocean County and vicinity, New Jersey

Stephen J Cauller, Lois M Voronin & Mary M Chepiga
A three-dimensional groundwater flow model was developed to simulate the effects of withdrawals on the groundwater-flow systems of five aquifers in and around Ocean County, New Jersey-the unconfined Kirkwood-Cohansey aquifer system and Vincentown aquifer, and three confined aquifers--the Rio Grande water-bearing zone, the Atlantic City 800-foot sand, and the Piney Point aquifer. A transient model was used to simulate conditions that represent no groundwater withdrawals, 2000-2003 groundwater withdrawals, and maximum-allocation groundwater withdrawals. Particle-tracking analysis, using...

Dependence of sedimentation behavior on pore-fluid chemistry for sediment collected offshore South Korea during the Second Ulleung Basin Gas Hydrate Expedition, UBGH2

Junbong Jang, Laura A Stern, William F Waite, Shuang C Cao, Jongwon Jung & Joo-Yong Lee
One goal of Korea?s second Ulleung Basin Gas Hydrate Expedition, UBGH2, is to examine geotechnical properties of the marine sediment associated with methane gas hydrate occurrences found offshore eastern Korea in the Ulleung Basin, East Sea. Methane gas hydrate is a naturally occurring crystalline solid that sequesters methane in individual molecular cages formed by a lattice of water molecules. Offshore Korea, gas hydrate is found in thin, coarse-grained sediment layers that are interbedded with fine-grained...

Allegheny River Mussel Population and Density Samples from 2003-2004

Rita Villella Bumgardner

2012 Air and Temperature Data from Shenandoah National Park

Craig D Snyder, Nathaniel P Hitt & John A Young

Fish tissue mercury and selenium concentrations in Upper Colorado River Basin: 1962-2011

Natalie K Day, Travis S Schmidt, James J Roberts, Barbara C Osmundson, James J Willacker & Collin A Eagles-Smith
These data were compiled to study mercury and selenium concentrations in fish species and assemblages in lotic waterbodies across the Upper Colorado River Basin. Data were compiled from State and Federal agencies. This data table contains raw concentration data, as well as standardized concentrations corrected for differences based on sample type (i.e., tissue type), species-specific bioaccumulation rates (Table S1), and fish size (Table S2). The data were used in linear mixed effects models to estimate...

Bathymetry, Stage-Area, and Stage-Volume Tables for the San Antonio Reservoir, California, 2018

Mathieu D Marineau, Scott A Wright & Joan V Lopez
This dataset is associated with the following Scientific Investigations Report: Marineau, M.D., Wright, S.A, and Lopez, J.V., 2020, Storage capacity and sedimentation characteristics of the San Antonio Reservoir, California, 2018: U.S. Geological Survey Scientific Investigations Report 2019-5151, 34 p., https://doi.org/10.3133/sir20195151.

Audiomagnetotelluric data, Buffalo River watershed, Arkansas, 2017

Brown II, Philip J, Brian D Rodriguez & James Reitman
This dataset includes the locations for audio-magnetotelluric (AMT) sounding data collected in August 2017 in the Buffalo River watershed of northern Arkansas by the U.S. Geological Survey (USGS). The sites were mostly alongside Osage Creek and its intermittent tributaries. Along with geologic mapping, the USGS used AMT data at 6 sites along a southwest-northeast profile of about 7 kilometers across the inferred northeastern margin of the Bear Creek uplift within the southern Ozark Dome to...

Ground motions from the 2019 Ridgecrest, California, Earthquake Sequence

John Rekoske, Eric M Thompson, Morgan P Moschetti, Mike Hearne, Brad T Aagaard & Grace Parker
This project involves the compilation of ground motions, their derived parameters, and metadata for 133 earthquakes in the 2019 Ridgecrest, California, earthquake sequence. This dataset includes 22,991 records from 133 events from 4 July 2019 to 18 October 2019 with a magnitude range from 3.6 to 7.1.

Desert Grassland Whiptail (Aspidoscelis uniparens) rDGWHx_CONUS_2001v1 Habitat Map

Julie Prior-Magee & Alexa McKerrow
This dataset represents a species habitat distribution model for Desert Grassland Whiptail. These habitat maps are created by applying a deductive habitat model to remotely-sensed data layers within a species' range.

Data Release for: Empirical Models for Estimating Baseline Streamflows in California and their Likelihood of Anthropogenic Modification

Daren M. Carlisle, David M. Wolock, Jeanette K. Howard, Ted Grantham, Kurt Fesenmyer & Michael E. Wieczorek
The dataset contain estimates of natural monthly streamflow for 135,118 stream segments in California, USA, from 1950 to 2012. Segments are identified per the medium resolution National Hydrography Dataset (NHD), Version 1. The dataset also contains observed monthly streamflows and estimates of natural monthly streamflows for 894 USGS stream gages in California, USA.

Black-tailed Rattlesnake (Crotalus molossus) rBTRAx_CONUS_2001v1 Range Map

Ken Boykin & Jeff Lonneker
This dataset represents a species known range extent for Crotalus molossus (Black-tailed Rattlesnake). These range maps are created by attributing sub-watershed polygons with information of a species presence, origin, seasonal and reproductive use.

South Shore Estuary Reserve -- Coordinated Water Resources Monitoring Strategy Web site

U.S. Geological Survey; New York Department Of State
Project Website with interactive mapper and resources related to water-quality monitoring within the South Shore Estuary Reserve, Long Island, New York.

Influenza A Virus Persistence Data from an Urban Wetland in Anchorage, Alaska, 2018-2019

Andrew Reeves, Andy M Ramey, Joshua C Koch, R.L. Poulson & D.E. Stallknecht
This dataset is three tables with details of samples and aliquots of waterfowl feces deposited in filtered surface water collected from an urban waterbody in Anchorage, Alaska in 2018-2019. Sample vials were submerged underwater in the same waterbody from which the samples were collected and the samples were tested for the presence and viability of influenza A virus. Temperature data and water chemistry measurements were also collected over time.

Wild horse aerial double observer survey analysis R script

Stefan L. Ekernas
This R file estimates horse abundance by analyzing data from simultaneous double-observer aerial surveys. The code follows analytical procedures established by Dr. Bruce Lubow, the statistician contracted for many years by Bureau of Land Management (BLM). Field data collection techniques are described in the Standard Operating Procedures (SOPs), which is a separate document. Download the files "SDO_RMark_template.R" and "Example_data.csv" to the same directory. Open R and make this the working directory with File | Change...

Water Quality and Algal Conditions in the North Umpqua River, Oregon, 1995?2007, and their Response to

Kurt D Carpenter, Chauncey W Anderson & Mikeal E Jones

Data from Common Murre Die-off Surveys and Necropsies Following the North Pacific Marine Heatwave, 2015-2016

John F Piatt, Sarah K Schoen & Mayumi Arimitsu
These data are in two tables relating to a die-off of Common Murres in the north Pacific, 2015-2016. The tables provide: 1) beach survey locations, date, time, distance surveyed (kilometers), and number of Common Murre carcasses observed during surveys conducted along the coastline of Alaska to document the 2015-2016 die-off of Common Murres coincident with the North Pacific marine heatwave, and 2) Common Murre necropsy results from carcasses collected during the die-off, including: bird identification...

Data Associated With Algal Toxin Testing of Common Murres (Uria aalge) and Forage Fish in Alaska, 2015-2017

Caroline R Van Hemert, Sarah K Schoen, R.W. Litaker, Matthew M Smith, Mayumi Arimitsu, W.C. Holland, D.R. Hardison, John F Piatt & John M Pearce
This data set is comprised of two tables with results of algal toxin screening for saxitoxin and domoic acid. We used enzyme-linked immunosorbent assay (ELISA) and high-performance liquid chromatography (HPLC) to screen seabirds, forage fish, and marine invertebrates from the Gulf of Alaska, 2015-2017.

MODFLOW model used to simulate multiple-well aquifer tests and characterize hydraulic properties of volcanic rocks in Pahute Mesa

C. Amanda Garcia, Tracie R Jackson & Keith J Halford
An improved understanding of groundwater flow and radionuclide migration downgradient from underground nuclear-testing areas at Pahute Mesa, Nevada National Security Site, requires accurate subsurface hydraulic characterization. To improve conceptual models of flow and transport in the complex hydrogeologic system beneath Pahute Mesa, the U.S. Geological Survey characterized bulk hydraulic properties of volcanic rocks using an integrated analysis of 16 multiple-well aquifer tests. Single-well aquifer-test analyses provided transmissivity estimates at pumped wells. Transmissivity estimates ranged from...

Hydrogeology, Hydrologic Effects of Development, and Simulation of Groundwater Flow in the Borrego Valley, San Diego County, California

Claudia C Faunt, Christina L Stamos-Pfeiffer, Lorraine E Flint, Michael T Wright, Matthew K Burgess, Michelle Sneed, Justin Brandt, Peter Martin & Alissa L Coes
The quality of water in the Borrego Valley is a concern because of the basin's reliance on groundwater for agricultural, recreational, and municipal supply. Groundwater quality can be affected by land-use activities occurring at or near land surface. These activities include irrigation of vegetated landscapes and the use of septic systems to dispose of wastewater. Groundwater quality can also be affected by declining water levels, as there is the potential to change the distribution of...

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