8,877 Works

Carbon assessment of Taxodium distichum knees in Mississippi River Alluvial Valley (2004)

Evelyn R Anemaet
Estimates of the biomass of the knees of baldcypress (Taxodium distichum), and oddly shaped, difficult to quantify vegetation components, can be critical to improve estimates of carbon stock in blue carbon assessments. To this end, tree metrics (e.g., density, height, biomass) were examined in 2004 at mixed baldcypress swamps across the Mississippi River Alluvial Valley (MRAV) from Illinois to Louisiana. Biomass of knees was estimated using the point-centered quarter method and volume/mass regressions calculated from...

Time Series Electromagnetic Induction-Log Datasets, Including Logs Collected through the 2018 Water Year in South Florida

Robert Valderrama
Time series electromagnetic induction-log (TSEMIL) datasets are collected from polyvinyl chloride (PVC) cased or uncased monitoring wells to evaluate changes in water conductivity over time. TSEMIL datasets consist of a series of individual electromagnetic induction logs collected at a frequency of months or years that have been compiled into a dataset by eliminating small uniform offsets in bulk conductivity between logs likely caused by minor variations in calibration. At depths where water conductivity is not...

Cross-reef wave and water level data from coral reef environments

Kurt Rosenberger, Olivia Cheriton & Curt D Storlazzi
Coral reefs provide important protection for tropical coastlines against the impact of large waves and storm damage by energy dissipation through wave breaking and bottom friction. However, climate change and sea level rise have led to growing concern for how the hydrodynamics across these reefs will evolve and whether these changes will leave tropical coastlines more vulnerable to large wave events. Because the majority of reef flats are depth-limited, offshore water levels (tides) strongly control...

Inshore Catch Data for Capelin (Mallotus villosus) in the Gulf of Alaska 1996-2017

Brielle Heflin, Mayumi Arimitsu & John F Piatt
These data consist of larval (less than 60 mm) and age-1+ (greater than 60 mm) Capelin CPUE (Catch per unit effort) from various catch efforts throughout the Gulf of Alaska (GOA) from 1996 - 2017. The dataset contains the following information: fishing gear type, date, time, catch location (latitude and longitude), tow distance, number of capelin caught, and CPUE for capelin greater than and less than 60 millimeters. Gear types include beach seines and trawls.

Aquatic community and environmental data for 14 rivers and streams in the Milwaukee Metropolitan Sewerage District Planning Area, 2004-13

Barbara C Scudder Eikenberry, Michelle A Nott, Jana S Stewart, Daniel J Sullivan, Faith A Fitzpatrick, Amanda H Bell & Hayley T Olds
In 2004, 2007, 2010, and 2013, the U.S. Geological Survey sampled benthic algae and invertebrates, and fish to assess the condition of the aquatic communities and water quality in 14 wadable streams near Milwaukee, Wisconsin. Additional community sampling was also done at a subset of three sites in 2011 and 2012 to assess temporal variation. Selected environmental (physical and chemical) data in the streams were collected to evaluate potential relations to the biota and the...

Wetland transition probabilities for category count model elicited from experts at 2015 workshop

Katherine M O'Donnell
This dataset is a set of transition probabilities that were elicited from a group of relevant experts during a structured decision-making workshop. Each value is the probability of a wetland in a given state undergoing a transition to another state during a single time step, given a potential management action is taken.

Forestry and soil moisture data from Sugarloaf Creek Basin, CA; 1970-2017

Jens Turner Stevens
The data from Sugarloaf Creek Basin (SCB) in Sequoia Kings Canyon National Park contained herein include forest inventory plots which were installed in 1970 and re-measured in 2017 for tree and shrub inventories; classified vegetation layers produced from raster images collected in 1973 from aerial orthophotos and in 2014 from satellites; spatially-distributed soil moisture measurements made from 2016-2018; and long-term in-situ weather station measurements made from 2016-2018. The Data directory contains four main data types....

Subsurface stratigraphic picks of the Middle-Upper Triassic Shublik Formation, Alaska North Slope

William A Rouse, Katherine J Whidden, Julie A Dumoulin & David W Houseknecht
The Middle-Upper Triassic Shublik Formation is the main source rock for Arctic Alaska oil and gas accumulations, including the supergiant Prudhoe Bay field. A revised stratigraphic framework recently has been developed in outcrop for the Shublik and related strata that delineates three large-scale stratigraphic units: 1) the lower clastic (LC) unit, 2) the middle carbonate-chert (MCC) unit, and 3) the upper clastic-carbonate (UCC) unit. The three stratigraphic units were interpreted to comprise five transgressive-regressive (T-R)...

DRAINMOD simulations for two agricultural drainage sites in western Fillmore County, southeastern Minnesota

Erik A Smith
DRAINMOD, a field-scale, process-based, distributed model (Skaggs, 1980; https://www.bae.ncsu.edu/agricultural-water-management/DRAINMOD/), was used to simulate subsurface drainage flow and field water-surface elevations. DRAINMOD simulations are often used to optimize drainage patterns for agricultural fields with subsurface drainage. For this study, the model results were also used to simulate deep seepage rates. Deep seepage is the amount of water that moves past the agricultural drains. These deep seepage rates were then used as a surrogate for potential groundwater...

Soil-Water Balance model datasets used to estimate recharge for southeastern Minnesota, 2014-2018

Erik A Smith
A previous soil-water balance (SWB) model [Smith and Westenbroek, 2015; http://dx.doi.org/10.3133/sir20155038) for Minnesota was updated to simulate potential recharge rates from 2014 to 2018. The previous model was developed to estimate mean annual potential recharge from 1995 to 2010. The updated model was also run with a newer version of the SWB model, also known as SWB version 2.0 {Westenbroek and others, 2018; https://doi.org/10.3133/tm6A59). The updated model was used to extract potential recharge rates for...

Potential groundwater recharge estimates based on a groundwater rise analysis technique for two agricultural sites in southeastern Minnesota, 2016-2018

Erik A Smith
A water table fluctuation model simulated potential recharge rates from 2016 to 2018 for two agricultural sites in southeastern Minnesota. The model calculated potential recharge rates through the analysis of groundwater rises. A total of 42 piezometers were analyzed for this study using the water table fluctuation model. This methodology of calculating potential recharge rates was used as an independent method from two other methods: a soil-water-balance model (https://doi.org/10.5066/P90N4AWG), and DRAINMOD (https://doi.org/10.5066/P987N30U).

Mixed Organic and Inorganic Tapwater Results in the Greater Chicago Area, USA, 2017-2019

Kristin M Romanok, Paul M Bradley, Dana W Kolpin & Shannon M Meppelink
This data set contains the result for inorganic constituents and organic compounds collected from tapwater locations, as well as water filtration plants, in East Chicago, Indiana, and Chicago, Illinois in 2017. Additionally quality assurance data collected was summarized. Residential samples collected were done so directly from residential kitchen taps (faucets) as is, it was noted if a point-of-use filtration device was utilized by the homeowner, but they were not removed for sampling. Samples were collected...

Magnetotelluric and gravity data from the Northwest Geysers, California

Jared R Peacock
This dataset consists of 42 magnetotelluric (MT) stations collected in 2017 in the Northwest Geysers, CA and 534 gravity stations collected in 2017 and 2019. The U.S. Geological Survey acquired these data as part of a project to image the heat source in the Northwest Geysers. Support was from the U.S. Geological Survey's Volcano Hazards Program.

Alamagan, Commonwealth of the Northern Mariana Islands, Nightingale Reed-warbler point transect survey data, 2010

Rick Camp
Point transect distance sampling data were collected during the 2010 surveys of Alamagan, Commonwealth of the Northern Mariana Islands (CNMI). Data were collected at points along transects where trained observers recorded the detection type (heard, seen, or heard then seen) and horizontal distance (exact distance in m) from the station center point to individual birds detected during an 8-min count. To increase the numbers of detections, survey data from 40 detections from the CNMI Division...

Northeastern Illinois (NEIL) Six County Airborne Lidar Validation Survey Data

Jeffrey R Irwin, Jeffrey J Danielson, Aparajithan Sampath, Minsu Kim & Seonkyung Park
Airborne light detection and ranging (lidar) can provide high-quality topographic information over large areas. Lidar is an active remote sensing technology that employs laser ranging in near-infrared and green spectral wavelengths to provide three-dimensional (3D) point information for objects, including Earth's surface, vegetation, and infrastructure. The U.S. Geological Survey (USGS) National Geospatial Program (NGP) 3D Elevation Program (3DEP) seeks to systematically acquire airborne topographic lidar for the conterminous U.S. (conus), Hawaii, and the U.S. territories....

Location and population served by domestic wells in the conterminous U.S.: 1990

Tyler D. Johnson
In this dataset we present two maps that estimate the location and population served by domestic wells in the contiguous United States. The first methodology, called the Block Group Method or BGM, builds upon the original block-group data from the 1990 census (the last time the U.S. Census queried the population regarding their source of water) by incorporating higher resolution census block data. The second methodology, called the Road-Enhanced Method or REM, refines the locations...

Fractional estimates of invasive annual grass cover in dryland ecosystems of western United States (2016 - 2018)

Sujan Parajuli, Devendra Dahal, Bruce K Wylie, Neal J Pastick & Steve Boyte
Invasive annual grasses, such as cheatgrass (Bromus tectorum L.), have proliferated in dryland ecosystems of the western United States, promoting increased fire activity and reduced biodiversity that can be detrimental to socio-environmental systems. Monitoring exotic annual grass cover and dynamics over large areas requires the use of remote sensing that can support early detection and rapid response initiatives. Here, we integrated in situ observations, weekly composites of harmonized Landsat and Sentinel-2 (HLS) data, maps of...

Characterization of whooping crane migrations and stopover sites used in the Central Flyway, 2010-2016

Aaron T Pearse, David A Brandt, Mark T Bidwell, Kristine L Metzger, Mary J Harner, David M Baasch & Wade Harrell
These data were developed to support an effort to characterize migration strategies in the U.S. Great Plains and Canadian Prairies and to explore sources of heterogeneity in their migration strategy, including space use, timing, and performance. Data come from locations and other information related to 58 marked Whooping Cranes (Grus americana) from 2010-2016. These data represent basic information about migrations of marked whooping cranes, including dates of initiation and termination of migration, time in migration,...

North Pacific Pelagic Seabird Database (NPPSD)

Gary S Drew & John F Piatt
The North Pacific Pelagic Seabird Database (NPPSD) was created in 2005 to consolidate data on the oceanic distribution of marine bird species in the North Pacific. Most of these data were collected using at-sea strip-transect surveys within defined areas and at known locations. The NPPSD also contains observations of other bird species and marine mammals. The original NPPSD combined data from 465 surveys conducted between 1973 and 2002, primarily in waters adjacent to Alaska. These...

Fire caused tree mortality in western US national parks (2018)

Donald A. Falk & Phillip VanMantgem
This data consists of observations of individual trees that were subjected to prescribed fire in western US national parks. Information on individual trees include measurements of tree size, competition, and fire-caused damage. The data also includes estimates of plot-level vapor pressure deficit anomaly before fire. These data support the following publication: van Mantgem, P. J., Falk, D. A., Williams, E. C., Das, A. J. and Stephenson, N. L. (2018), Pre‐fire drought and competition mediate post‐fire...

Data Release for the 2010 Haiti Seismic Hazard Model

Allison M Shumway
Gridded seismic hazard curve data, gridded ground motion data, and mapped gridded ground motion values are available for the 2010 Haiti Seismic Hazard Model. Probabilistic seismic hazard data and maps are available for peak ground acceleration (PGA) and 0.2, and 1.0 second spectral acceleration at probability levels of 2 percent in 50 years and 10 percent in 50 years, assuming firm rock soil conditions at 760 m/s. Development of the 2010 Haiti Seismic Hazard Model...

Puget Sound Stormwater Action Monitoring Basin Characteristics

Alexander O Headman
The Stormwater Action Monitoring (SAM) program is a cumulative and regional monitoring effort in the Puget Sound region of Washington State. Under the SAM program, the status and trends of water chemistry, sediment chemistry, habitat and biota in small streams and nearshore marine waters in the Puget Lowlands are monitored and documented. As part of recommendations to the program made in 2018, site selection in 2019 focused on small watersheds ranging in size from 2.5-50...

Forest structure, regeneration, and soil data to support mangrove forest damage assessment on St. John, U.S. Virgin Islands, from Hurricane Irma (2018-2019)

Andrew From, Ken W. Krauss, Caroline S. Rogers, Kevin Whelan & Michael J. Baldwin
These data support efforts to assess mangrove forest structural response to Hurricane Irma. Data were collected from within Virgin Islands National Park in St John, U.S. Virgin Islands. Datasets include measurements of forest inventory and vitality status, woody debris, regeneration assessment, and organic soil carbon.

Microbial communities and bacterial indicators for shoreline sand, sediment, and water in Racine, Wisconsin; Chicago, Illinois; and East Chicago, Indiana; 2016-2017

Meredith B Nevers & Muruleedhara N Byappanahalli
The data associated with the following data release were collected between 2016 and 2017 at three locations on Lake Michigan: Racine, WI; Chicago, IL; and East Chicago, IN. Individual water samples were collected one day a week for ten weeks between June and August. Samples were collected from eight specific sites made up of two river and six shoreline type environments. Sampling was completed at sites where various morphology (embayment, sand and sediment characteristics, size...

Tree mortality in blue oak woodlands in Sequoia National Park during the extreme drought

Adrian J Das & Nathan L Stephenson
These data were collected to quantify oak mortality during the 2014-2017 drought. 30 tenth hectare drought plots were established throughout the blue oak woodland of Sequoia National Park. Information on species, size, and mortality were collected for all standing trees in each plot. In addition, two long-term 2.25 ha plots were established, in which the same data were collected.

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