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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Updated CONUS river network attributes based on the E2NHDPlusV2 and NWMv2.1 networks Updated CONUS river network attributes based on the E2NHDPlusV2 and NWMv2.1 networks
The comid field of these data can be used to join to the NHDPlus version 2 flowline comid or catchment featureid attributes. The included attributes follow the same data model as the NHDPlusV2 but include numerous updates and improvements to network connectivity. All attributes that depend on network connectivity have been recalculated. These attributes are based on the National...
Great Basin predicted potential cheatgrass abundance, with model estimation and validation data from 2011-2019 Great Basin predicted potential cheatgrass abundance, with model estimation and validation data from 2011-2019
This data release includes data and metadata describing 1) the rule set used to create vegetation type categories for the Great Basin; 2) estimation and validation data used to fit models of cheatgrass (Bromus tectorum) cover; and 3) mapped predictions of potential cheatgrass abundance.
Hawaii Volcanoes National Park, Puhimau Geothermal Area vegetation and abiotic data, 2011-2021 Hawaii Volcanoes National Park, Puhimau Geothermal Area vegetation and abiotic data, 2011-2021
This data release includes metadata and tabular data that documents survival of endangered Portulaca sclerocarpa, percent cover of vegetation surrounding Portulaca sclerocarpa, as well as soil depth and soil temperature. All data were taken between 2011-2021 in the Puhimau Geothermal Area in Hawaiʻi Volcanoes National Park.
Spatial data set of mapped water-level changes in the High Plains aquifer, predevelopment (about 1950) to 2017 and 2015 to 2017 Spatial data set of mapped water-level changes in the High Plains aquifer, predevelopment (about 1950) to 2017 and 2015 to 2017
The High Plains aquifer underlies 111.8 million acres (about 175,000 square miles) in parts of eight States—Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming. Water-level declines began in parts of the High Plains aquifer soon after the beginning of substantial irrigation with groundwater in the aquifer area (about 1950). This data release contains the...
Thickness of the Chicot aquifer system of southwestern Louisiana's surficial confining unit and shallow sand lenses Thickness of the Chicot aquifer system of southwestern Louisiana's surficial confining unit and shallow sand lenses
The Chicot aquifer system is a vital water resource for Southwestern Louisiana, providing nearly half of the fresh groundwater the region consumes (Sargent, 2011). The aquifer’s surficial confining unit consists of a wedge-shaped thickening sequence of south to southeastern dipping, interbedded clays and coarser material (primarily sand and gravel). In collaboration with the Louisiana...
HASP HASP
The Hydrologic Analysis Package (HASP) can retrieve groundwater level and groundwater quality data, aggregate these data, plot them, and generate basic statistics. One of the benefits of HASP is its ability to aggregate two time-series of data into one record and generate statistics and graphics on hat record. By merging two data sets together, users can view and manipulate a much longer...
Preliminary model data for lake level gate operation and discharge at Reelfoot Lake - Tennessee and Kentucky Preliminary model data for lake level gate operation and discharge at Reelfoot Lake - Tennessee and Kentucky
Reelfoot Lake, in northwestern Tennessee and southwestern Kentucky, is home to a Federal wildlife refuge, a State wildlife-management area, and to a tourism industry that is based on hunting, fishing, birding, and the area’s unique cultural history. In 2012, the U.S. Geological Survey, in cooperation with the Tennessee Wildlife Resources Agency, began a series of hydrologic...
Coastal Bathymetry and Backscatter Data Collected in June 2021 from Rockaway Peninsula, New York Coastal Bathymetry and Backscatter Data Collected in June 2021 from Rockaway Peninsula, New York
Scientists from the U.S. Geological Survey St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida (USGS-SPCSMC), conducted a geophysical survey nearshore the Rockaway Peninsula, New York, during June 2021. During this study, multibeam bathymetry and acoustic backscatter data were collected aboard the R/V Sallenger. Efforts were supported by the National Fish and...
Datasets for Rapid Assessment of Streambank Erosion Potential for Selected Streams throughout the Greater Raleigh Area, North Carolina, 2022 Datasets for Rapid Assessment of Streambank Erosion Potential for Selected Streams throughout the Greater Raleigh Area, North Carolina, 2022
As part of a collaborative study with the City of Raleigh, North Carolina, the U.S. Geological Survey is assessing streambank erosion potential in selected stream reaches throughout the Greater Raleigh metropolitan area. Rapid field measurement techniques were used to assess streambank stability at 124 stream segments between January and March 2022. Field data were collected using the...
Keys Carbonate Budget Calculations and Analysis Keys Carbonate Budget Calculations and Analysis
The code 'Keys Carbonate Budget Calculations', written in R (v.4.0.4; https://www.R-project.org/), uses benthic coral-reef survey data and fish survey data to calculate coral-reef carbonate budgets following the ReefBudget v2 methodology (http://geography.exeter.ac.uk/reefbudget/; Perry and Lange, 2019). The carbonate budgets include estimates (means +/- standard errors) of gross...
Mangrove Peat Radiocarbon Ages From Snipe and Swan Key, FL Mangrove Peat Radiocarbon Ages From Snipe and Swan Key, FL
In 2016, researchers collected cores of mangrove peat from two islands in the Florida Keys: Snipe Key (24.679 degrees N, 81.653 degrees W) and Swan Key (25.349 degrees N, 80.251 degrees W) (Fig. 1). This data release contains the radiocarbon ages and associated data for peat samples analyzed throughout the two cores. These data were used by Khan and others (2022) to reconstruct the...
MODFLOW 6 - LACP MODFLOW 6 - LACP
MODFLOW 6 - LACP uses the MODFLOW 6.4.0 source code and modifies the Horizontal Flow Barrier (HFB) package to allow simulation of vertical hydraulic conductance (CV) by connection rather than by cell, an option available for previous versions of MODFLOW (USG). The MODFLOW 6 - LACP HFB package is used to simulate thin, vertical, and low-permeability geologic features (barriers) and acts...