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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Concentrations of chlorinated volatile organic compounds and per- and polyfluoroalkyl substances in groundwater and surface water, former Naval Air Warfare Center, West Trenton, New Jersey Concentrations of chlorinated volatile organic compounds and per- and polyfluoroalkyl substances in groundwater and surface water, former Naval Air Warfare Center, West Trenton, New Jersey
This dataset contains a compilation of concentrations of chlorinated volatile organic compounds (VOCs) and per- and polyfluoroalkyl substances (PFAS) in groundwater and surface water sampled at the former Naval Air Warfare Center, West Trenton, New Jersey. Measured VOCs include trichloroethene (TCE), cis- 1,2-dichloroethene (cisDCE), and vinyl chloride (VC). Semi-volatile organic...
Data Release of Basin Characteristics, Generalized Skew Map, and Peak-Streamflow Frequency Estimates in Oklahoma, 2017 (ver. 1.1, September 2020) Data Release of Basin Characteristics, Generalized Skew Map, and Peak-Streamflow Frequency Estimates in Oklahoma, 2017 (ver. 1.1, September 2020)
The U.S. Geological Survey (USGS) Oklahoma-Texas Water Science Center, in cooperation with the Oklahoma Department of Transportation, updated basin-characteristic data for Oklahoma streams with drainage areas of less than 2,510 square miles. Basin characteristics were updated or created for 248 streamgages. The previously published Oklahoma generalized skew map, a necessary element in...
Measurements of Discharge in Small, Low-Flowing Streams Using Multiple Techniques Measurements of Discharge in Small, Low-Flowing Streams Using Multiple Techniques
The accompanying datasets include all field measurements collected as part of a study to evaluate multiple streamflow measurement techniques in small streams throughout the United States. Each individual dataset is paired with a metadata record describing the contents and purpose of that dataset.
Community Exposure in California to Coastal Groundwater Hazards Enhanced by Climate Change, reference year 2020 Community Exposure in California to Coastal Groundwater Hazards Enhanced by Climate Change, reference year 2020
The data set contains information on potential population, economic, land cover, and infrastructure groundwater inundation exposure for San Francisco Bay and coastal communities of the state of California, USA. The type of information includes U.S. Census data on the number and types of residents, Data Axle data on numbers and types of employees, county parcel values, HAZUS building...
Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021 Qualitative Mineral Potential Map of Tungsten Skarn in the Yukon-Tanana Uplands, Eastern Alaska, USA, 2021
The data release includes GIS data that map potential for tungsten skarn mineralization in permissive tracts in the Yukon-Tanana Uplands, Eastern Alaska, along with tables listing keywords and procedures used to produce the permissive tracts and score them for mineral potential.The GIS data are encapsulated in a file geodatabase called "AK_Wskarn_tract.gdb" and are also available in the...
MODFLOW-NWT model for extending the capture map concept to estimate discrete and risk-based streamflow depletion potential MODFLOW-NWT model for extending the capture map concept to estimate discrete and risk-based streamflow depletion potential
A previously developed groundwater flow model (https://doi.org/10.5066/P9051RUT) was slightly modified to estimate the risk-based discrete relation between groundwater extraction and surface-water/groundwater exchange. Previously, the concept of a ``capture map'' has been put forward as a means to effectively summarize this relation for decision-making consumption. While capture maps...
Debris-flow and Flood Video Files, Chalk Cliffs, Colorado, USA, 2016 Debris-flow and Flood Video Files, Chalk Cliffs, Colorado, USA, 2016
Chalk Cliffs located 8 miles southwest of Buena Vista, Colorado, is one of the most active debris-flow areas in the state (U.S. Geological Survey). Three stations were set up at Chalk Cliffs which are located sequentially along a channel draining the 0.3 km2 study area. These stations are equipped with rain gauges, laser distance meters, and data loggers to record rainfall and stage data...
Average tree regrowth time of CONUS from 1985 to 2017 Average tree regrowth time of CONUS from 1985 to 2017
We developed a 30-m spatial resolution forest regrowth time map for CONUS over 1985–2017. This map is the first attempt, as far as we know, to quantify tree regrowth rate at a national extent in the United States. The method used all available Landsat images to detect disturbances over forest lands and classify grass/shrub to tree class transitions on an annual basis. The average...
MODFLOW-NWT model for risk-based decision-support groundwater modeling for the lower San Antonio River Basin, Texas, USA MODFLOW-NWT model for risk-based decision-support groundwater modeling for the lower San Antonio River Basin, Texas, USA
A MODFLOW-NWT groundwater/surface-water model was developed to evaluate the responses of low-flow conditions and groundwater levels within the lower San Antonio River Basin, Texas, USA under conditions of reduced recharge and increased groundwater withdrawals. There was concern that decreased recharge and increased groundwater withdrawals may adversely affect streamflow and groundwater...
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Togiak National Wildlife Refuge, Alaska, 2008-2010
These data are in six tables relating to surveys of eelgrass beds in three bays adjacent to Togiak National Wildlife Refuge, in southwestern Alaska. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010 Point Sampling Data for Eelgrass (Zostera marina) and Seaweed Distribution and Abundance in Bays Adjacent to the Alaska Peninsula-Becharof National Wildlife Refuges, Alaska, 2010
These data are in six tables relating to surveys of eelgrass beds in Chignik Lagoon and Mud Bay, Alaska Peninsula-Becharof National Wildlife Refuges. The tables provide environmental conditions, eelgrass abundance, distribution, and measurements used to estimate overall biomass.
SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska SUPERSEDED: Map of Eelgrass Distribution in 1999 and Field Survey Points in 2010 at Chignik Lagoon and Mud Bay, Alaska
This doi was reserved and published in error. Field survey data of eelgrass distribution and abundance at Chignik Lagoon are available in a USGS Data Release: https://doi.org/10.5066/P9URZJYW Map data of eelgrass distribution from locations in Alaska (including Chignik Lagoon) are available in a USGS Data Release: https://doi.org/10.5066/P9WEK4JI