Filters: Tags: {"type":"Theme"} (X) > Date Range: {"choice":"month"} (X)
Folders: ROOT > Users ( Show direct descendants )
256 results (49ms)
Location
Folder
ROOT _Users Filters
Date Types (for Date Range)
Types
Contacts
Categories
Tag Schemes
|
We mapped potential climate change refugia for riparian areas in the central and western USA for 2040-2069 and 2070-2099. Riparian refugia are existing riparian areas that are projected to maintain riparian vegetation and associated ecological function under plausible future climates. Four input variables were included in the riparian refugia index: two landscape variables that represent where existing riparian areas may be more resilient to climatic changes (riparian connectedness and landscape diversity) and two climate variables that reflect projected exposure to climate change (runoff and warm days). For the climate variables, we considered two global circulation models: moderately hot and wet (CNRM-CM5) and...
Geospatial datasets were developed to estimate the altitude of the top of bedrock, altitude of the top of the Paradox salt, altitude of the water table in the alluvial aquifer, and the thickness and extent of saturated alluvium in the Paradox Valley in western Colorado. This study was completed by the U.S. Geological Survey (USGS) in cooperation with the Bureau of Reclamation for modeling of brine discharge to the Dolores River (Heywood and others, 2024; Paschke and others, 2024). One point dataset and 11 surfaces (shapefiles or rasters) are published in this data release. The point dataset (Paradox_well_data.zip) contains water-level and geologic data for groundwater, observation, test, and production wells in...
Categories: Data;
Types: Downloadable,
GeoTIFF,
Map Service,
Raster;
Tags: Colorado,
Dolores River,
Montrose County,
Paradox Formation,
Paradox Valley,
We applied habitat suitability indices and network analysis to identify the lakes most critical to the establishment and spread of zebra mussels (Dreissena polymorpha). We included 225 lakes in the study area Habitat suitability indices were based on known tolerances of water chemical and physical parameters in relationship to zebra mussel growth, survival, and reproduction. We created multiple boater movement networks consisting of lake nodes and connecting roadway edges. Each network represented the potential connectivity of lakes for recreational users depending on the maximum roadway distance boaters were likely to travel. We evaluated three different maximum roadway distances based on boater movement surveys:...
A three-dimensional groundwater flow model, constructed in MODFLOW-NWT, was developed to evaluate the groundwater flow system near Puget Sound, Pierce and King Counties, Washington. A steady-state model version was constructed to simulate equilibrium conditions, while a transient model version was constructed to simulate monthly variability from January 2005 to December 2015. The model was used to simulate several hydrologic scenarios. This data release contains the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20245026v2).
These data were released prior to the October 1, 2016 effective date for the USGS’s policy dictating the review, approval, and release of scientific data as referenced in USGS Survey Manual Chapter 502.8 Fundamental Science Practices: Review and Approval of Scientific Data for Release. This dataset represents 19,031 basin boundaries and their streamgage locations for the U.S. Geological Survey's (USGS) active and historical streamgages from the published dataset of Stewart and others (2006) and its subsequent updates (D.W. Stewart, USGS, written commun., 2011). Only the basin boundaries that were delineated within 15 percent of the basin area reported in the National Water Information System (NWIS) were included...
Wildfires are increasing in size and severity because of a warming climate in combination with overstocked forests. Fire increases the likelihood of debris flows, posing significant threats to life, property, and water supplies. Post-fire debris flows are a substantial, increasing hazard in the Santa Fe Municipal Watershed and other similar forested watersheds across the western United States. The Santa Fe Municipal Watershed in northern New Mexico is of vital importance to the water supply for the city of Santa Fe. We conducted a debris-flow hazard assessment for the Santa Fe Municipal Watershed (SFMW) in north-central New Mexico. We modeled post-fire debris flow probability and volume in 103 sub-basins for 2-year,...
Data include lengths, observations on piscivory, and hatch dates for age-0 largemouth bass in Wisconsin lakes with predicted total length (TL) if the fish would have hatched 7 days earlier or 7 days later.
These data include geochemical analyses of rock, mine waste, and water samples collected from the Balkhab copper deposit, Sar-e Pol Province, Afghanistan in 2020.
Categories: Data;
Tags: Afghanistan,
Mineral Resources,
USGS Science Data Catalog (SDC),
environmental chemistry,
geochemistry
The California Coast Range are an area with a long-lived deformation history which includes modern, ongoing right lateral strike slip faulting. Large strike slip faults in the region include the San Andreas fault, the Maacama fault, the Bartlett Springs fault among many others. In areas where strike slip fault geometry changes, either in restraining or releasing bends, vertical motion may occur in response to dominant right-lateral deformation. Channel steepness and chi data may be used to identify areas of recent uplift where the bedrock hardness and local precipitation gradients are known. This dataset provides a map of channel steepness and chi and was generated with Land Surface Dynamics Topography Tools software...
Nest number, description of nest structure and location, longitude, latitude, dates of observations, presence of adults, eggs, nestlings, outcome of reproductive effort, number of young fledged, and osprey nest platforms occupied by Canada geese.
Categories: Data;
Tags: Chesapeake Bay,
Maryland,
USGS Science Data Catalog (SDC),
biota,
bird conservation,
The U.S. Geological Survey (USGS) installed acoustic bedload monitoring systems at four sites along the Trinity River below Lewiston Dam to record the noise generated by mobilized bed material, known as sediment generated noise (SGN) (Geay and others, 2017). The four sites are: Trinity River at Lewiston (TRAL, 11525500), Trinity River above Grass Valley Creek (TRGVC, 11525630), Trinity River at Limekiln Gulch (TRLG, 11525655) and Trinity River at Douglas City (TRDC, 11525854). These sites were selected because bedload measurements are frequently made at these locations during restoration flows as part of monitoring done by the Trinity River Restoration Program (TRRP). Monitoring took place in the spring of 2015,...
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: California,
Trinity River,
acoustic methods,
bedload monitoring,
environment,
The Hamilton Wetland Restoration Project (HWRP) is a joint venture between the US Army Corps of Engineers (USACE; San Francisco District) and the California State Coastal Conservancy. The site is located on the property of the former Hamilton Army Airfield in Novato, California, along the western edge of San Pablo Bay, which is part of northern San Francisco Bay. The initial stages of wetland restoration, which included dredged sediment reuse, took place during 2009–2011. From 2011 until April 2014, the site was maintained as partially flooded through a temporary one-way culvert that allowed bay water onto the site. On April 25th, 2014, the outboard levee towards the north-eastern corner of the site was breached...
Categories: Data,
Data Release - Revised;
Tags: Hydrology,
Novato,
San Francisco Bay,
San Pablo Bay,
USGS Science Data Catalog (SDC),
This study examined effects of the brominated flame retardant hexabromocyclododecane (HBCD) on the avian endocrine system. Japanese quail (Coturnix japonica) were exposed to multiple doses of HBCD over multiple generations through feed and by maternal deposition into the egg. Liver transcriptomes were examined to identify genes and pathways directly affected by HBCD to better understand the mechanisms of action in birds. RNA was extracted from liver of adults and embryos and analyzed (1x50 bp) on an Illumina HiSeq 2000. NCBI Biosample accessions and the raw counts that were input into the differential expression analysis are provided in this dataset. The raw sequence data are available at the NCBI Sequence Read...
Categories: Data;
Tags: Environmental Health,
Flame Retardants,
Transcriptomics,
USGS Science Data Catalog (SDC),
biota
Water temperature is an important characteristic of stream conditions with implications for water quality and stream dwelling organisms. This Data Release contains spatial stream network (SSN) objects and R scripts to run SSN models to predict mean monthly stream temperature and 7-day average daily maximum (Max7DAD) during August and September in the White River watershed within Mount Rainier National Park, Washington. Monthly predictions for August and September are derived and calibrated from stream temperature data collected by the National Park Service between 2010 and 2020 within the White River and its tributaries. These predictions are average conditions that correspond to the timeframe 2010 - 2020. Functions...
This dataset represents 505 campsites along the Colorado River in Grand Canyon with associated debris flow probabilities calculated for approximately a 100-year period (Griffiths and others, 2004) and geomorphic attributes mapped by the U.S. Geological Survey, Southwest Biological Science Center, Grand Canyon Monitoring and Research Center (GCMRC) (Hadley and others, 2018). The campsite polygons were developed as part of a master campsite database that was a collaborative effort to maintain between the National Park Service in Grand Canyon National Park and the GCMRC. Debris flow probabilities have been added as an attribute from ungauged tributary watersheds published in 2004 (Griffiths and others, 2004). Area...
Categories: Data,
Data Release - Provisional;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Arizona,
Colorado River,
Geography,
Geomorphology,
Glen Canyon,
The 1966-2022 North American Breeding Bird Survey (BBS) dataset contains avian point count data for more than 700 North American bird taxa (species, races, and unidentified species groupings). These data are collected annually during the breeding season, primarily in June, along thousands of randomly established roadside survey routes in the United States and Canada. Routes are roughly 24.5 miles (39.2 km) long with counting locations placed at approximately half-mile (800-m) intervals, for a total of 50 stops. At each stop, a citizen scientist highly skilled in avian identification conducts a 3-minute point count, recording all birds seen within a quarter-mile (400-m) radius and all birds heard. Surveys begin 30...
This data release contains California Department of Water Resources borehole data that were regularized by the US Geological Survey. The dataset contains borehole lithologic data, and geospatial data of water wells in the Hat Creek basin California, located east of Mount Shasta in northern California. The borehole dataset is released as an excel table and a shapefile and includes (1) individual borehole location, and (2) downhole lithologic interval data derived from well drillers’ lithology logs. The geospatial data consists of a point feature class that is a 2-dimensional representation of the locations of Hat Creek basin well logs.
Categories: Data;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: Cassel quadrangle,
Hat Creek basin,
Lower Pit River,
Murken Bench quadrangle,
Old Station quadrangle,
Early studies of soil formation highlighted several key factors that together determine the degree of soil pedogenesis, which include climate, organisms (including vegetation), topography, and parent material (Jenny H.; 1941; Factors of Soil Formation, a System of Quantitative Pedology; https://doi.org/10.2134/agronj1941.00021962003300090016x). A soil chronosequence is defined as a series of soils in which all soil-forming factors except time are similar, where time is represented by soil or landform age. In 1978, the late Denis Marchand launched a project to identify, sample, and analyze soil profiles from seven soil chronosequences in the Western United States. The resulting datasets were compiled as part of a...
Categories: Data;
Tags: Arapaho cirque,
Colorado Front Range,
Cowlitz River,
Feather River,
Geochemistry,
This data release contains the model inputs, outputs, and source code (written in R) for a redeveloped PRObability of Streamflow PERmanence (PROSPER) model (version 2.0) that had previously been developed for the Pacific Northwest Region (PROSPER_PNW_2), and a raster data set which shows where influential predictor values were outside the range of calibration data. The PROSPER-PNW model, a random forest model, was redeveloped in the Ranger R package using all the original model inputs consistent with PROSPER_PNW_2 to produce annual streamflow permanence probabilities for calendar years 2004-2016 at a 30-meter stream grid resolution that approximately corresponds to flowlines consistent with the National Hydrography...
Categories: Data,
Data Release - In Progress;
Types: Downloadable,
GeoTIFF,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service,
Raster;
Tags: Idaho,
Montana,
Oregon,
Pacific Northwest,
Washington,
Geochemical data for aqueous, mine tailings, and sediment samples collected from the Big River and Meramec River drainage basins in southeastern Missouri are presented. The Big River drains historical lead, zinc, and barite mining districts, including the Old Lead Belt (OLB). Underground mining in the OLB resulted in large mine-waste chat piles and tailings impoundments that have released material laden with lead, zinc, and other trace elements to the Big River drainage basin. The Meramec River has also been affected by mining-related material transported by the Big River. Since the late 1980s, the U.S. Geological Survey (USGS) has been involved in investigations into the effects of mining on the Big River. The...
Categories: Data;
Tags: Environmental Health,
Geochemistry,
Missouri,
USGS Science Data Catalog (SDC),
United States,
|
|
