Data Releases
The data collected and the techniques used by USGS scientists should conform to or reference national and international standards and protocols if they exist and when they are relevant and appropriate. For datasets of a given type, and if national or international metadata standards exist, the data are indexed with metadata that facilitates access and integration.
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Ascii grids of predicted pH in depth zones used by domestic and public drinking water supply depths, Central Valley, California
The ascii grids associated with this data release are predicted distributions of continuous pH at the drinking water depth zones in the groundwater of Central Valley, California. The two prediction grids produced in this work represent predicted pH at the domestic supply and public supply drinking water depths, respectively and are bound by the alluvial boundary that defines the Central Valley. A
Partitioning Evapotranspiration into Green and Blue Water Sources in the Conterminous United States
In this study, we combined two actual evapotranspiration datasets (ET), one obtained from a root zone water balance model and another from an energy balance model, to partition annual ET into green (rainfall-based) and blue (surface/groundwater) water sources. Time series maps of green water ET (GWET) and blue water ET (BWET) are produced for the conterminous United States (CONUS) over 20012015.
Assessment of pulsed DC electric field to guide downstream migrating sea lamprey in experimental flume at USGS Conte Anadromous Fish Lab, Turners Falls, MA (December 2013)
This is a tabular data set that contains records of water velocity, depth, temperature and trial information such as start and stop times and date for experimental trials testing the effect of an electric field on the movement patterns and distribution of juvenile sea lamprey moving downstream in an experimental flume. Distribution is recorded for each individual lamprey as presence (1) or absence
Digital seafloor images and sediment grain size from the mouth of the Columbia River, Oregon and Washington, 2014
Geo-referenced digital imagery of in-situ seafloor sediments in the mouth of the Columbia River was collected and analyzed to determine median grain size of the surface sediments. Digital imagery of the seafloor was collected with a flying eyeball (Rubin and others, 2007) from the R/V Parke Snavely from September 11 to September 13, 2014 (USGS Field Activity 2014-642-FA). The flying eyeball consis
Acidification and Increasing CO2 Flux Associated with Five, Springs Coast, Florida Springs (1991-2014)
Scientists from the South West Florida Management District (SWFWMD) acquired and analyzed over 20 years of seasonally-sampled hydrochemical data from five first-order-magnitude (springs that discharge 2.83 m3 s-1 or more) coastal springs located in west-central Florida. These data were subsequently obtained by the U.S. Geological Survey (USGS) for further analyses and interpretation. The spring st
Evapotranspiration (ET) data at Immokalee row crop site, Collier County, Florida, September 22, 2008 - January 8, 2009
The data set consists of evapotranspiration measurements made at the U.S. Geological Survey Immokalee row crop climate station beginning September 22, 2008 and ending January 8, 2009. Daily evapotranspiration rates corrected to a near-surface energy-budget varied from 0.1 millimeter (9/28/2008) to 3.3 millimeters (9/24/2008). The eddy-covariance method was used, with high-frequency sensors install
USGS National and Global Oil and Gas Assessment Project-Burgos, Tampico-Misantla, and Sabinas Provinces, Northeast Mexico, Assessment Unit Boundaries
The Assessment Unit is the fundamental unit used in the National and Global Petroleum Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum System. The Assessment Unit is shown herein as a geographic boundary interpreted, defined, and mapped by the geologist responsible for the province and
Catchment-flowline network and selected model inputs for an enhanced and updated spatially referenced statistical assessment of dissolved-solids load sources and transport in streams of the Upper Colorado River Basin
This USGS data release consists of the synthetic stream network and associated catchments used to develop spatially referenced regressions on watershed attributes (SPARROW) model of dissolved-solids sources and transport in the Upper Colorado River Basin as well as geology and selected Basin Characterization Model (BCM) data used as input to the model.
Blood Parasite Infection Data from Blue-winged Teal, Canada (Alberta, Saskatchewan) and USA (Texas, Louisiana), 2012-2013
This data set includes age, sex, location, and blood parasite infection data from Blue-winged teal (Anas discors) captured in Canada (Alberta, Saskatchewan) and the USA (Texas, Louisiana) in 2012-2013. Infection data for three different genera of blood parasites are given as are GenBank accession numbers for genetic sequences obtained from positive infections.
Archive of Sediment Data Collected in 2014 and 2015 From Around Breton and Gosier Islands, Breton National Wildlife Refuge, Louisiana
Breton Island, located at the southern end of the Chandeleur Islands, supports one of Louisiana's largest historical brown pelican nesting colonies. Although the brown pelican (Pelecanus occidentalis) was delisted as an endangered species in 2009, nesting areas are threatened by continued land loss and are extremely vulnerable to storm impacts. The U.S. Fish and Wildlife Service proposed to restor
Experimental data comparing two coral grow-out methods in nursery-raised Acropora cervicornis
Staghorn coral, Acropora cervicornis, is a threatened species and the primary focus of western Atlantic reef-restoration efforts to date. As part of the USGS Coral Reef Ecosystems Studies project (http://coastal.er.usgs.gov/crest/), we investigated skeletal characteristics of nursery-grown staghorn coral reared using two commonly used grow-out methods at Mote Tropical Research Laboratory?s offshor
Depth-to-water area polygons, isopleths showing mean annual runoff, 1912-1963, and water-level altitude contours for the Humboldt River Basin, Nevada
This USGS data release represents the 1:500,000-scale geospatial data for the following publication: Eakin, T.E., and Lamke, R.D., 1966, Hydrologic reconnaissance of the Humboldt River basin, Nevada: Nevada Department of Conservation and Natural Resources, Water Resources Bulletin 32, 107 p.
The data set consists of 3 separate items:
1. Depth-to-water area polygons
2.