edu.ucar.gdex::d550000 eng; USA utf-8 dataset NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu NSF NCAR Geoscience Data Exchange The Geoscience Data Exchange (GDEX), managed by the Computational and Information Systems Laboratory (CISL) at NSF NCAR, contains a large collection of meteorological, atmospheric composition, and oceanographic observations, and operational and reanalysis model outputs, integrated with NSF NCAR High Performance Compute services to support atmospheric and geosciences research. download pointOfContact 2026-04-22T18:09:19Z ISO 19115 Geographic Information - Metadata ISO19115:2003/Cor 1 2006 https://doi.org/10.5065/D6QR4V9X https://pubs.usgs.gov/fs/2012/3047/ https Related Resource #1 Description of USGS Hydro-Climatic Data Network 2009 (HCDN–2009) https://waterdata.usgs.gov/nwis/sw https Related Resource #2 Access to HCDN-2009 streamgage data http://esapubs.org/Archive/ecol/E091/045/metadata.htm http Related Resource #3 GAGES: A stream gage database for evaluating natural and altered flow conditions in the conterminous United States. Streamflow drought indicators across conterminous United States d550000 2016-01-28 publication Poshtiri, Maryam Pournasiri author Towler, Erin author Pal, Indriani author NSF National Center for Atmospheric Research publisher This dataset contains indicators for characterizing observed streamflow droughts in 603 stations through the major watershed regions of the conterminous U.S. The dataset is based on observed streamflow data from Hydro-Climatic Data Network 2009, developed by the U.S. Geological Survey. Due to multi-attributable aspect of this natural hazard, analyzing the various feature of droughts is necessary. This dataset is useful to help advance water resources decision-making and will allow researchers to identify trends as well as potential drivers (e.g., land use or climate) associated with streamflow droughts. The dataset is organized in three different categories: low flow characteristics, deficit characteristics, and independent drought event characteristics for 603 stations through the major watershed regions of the conterminous US from 1900 to 2012. Low flow characteristics include minimum 1-day , 7-day, and 30-day mean flow as well as 50th, 75th, 90th and 95th percentiles from the flow duration curve, which examined over annual, Northern summer, Northern winter, and 12 calendar month time scales. Deficit characteristics are examined for the 1-day, 7-day and 30-day mean flow with 10 years return period, as well as 50th, 75th, 90th and 95th percentiles threshold levels over annual, Northern summer, Northern winter, and 12 calendar month time scales, and include cumulative streamflow deficit occurrence, cumulative streamflow deficit volume, minimum streamflow deficit volume, and deficit intensity. Independent drought event characteristics are examined over annual time scale and include number of droughts, first day of drought, drought duration, and drought deficit volume. Data are available in two- and three-dimensional files over the conterminous U.S. for the periods 1900 to 2012. completed datahelp@ucar.edu pointOfContact notPlanned dataset https://gdex.ucar.edu/images/ds_logos/default_200_200.png Logo thumbnail from URL png Comma-separated Values dataset Resource Type 2021-03-30 revision 4.4 DataCite Metadata Working Group orginator resourceTypeGeneral GROUND STATIONS > GROUND STATIONS U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Platforms STREAM GAUGES > STREAM GAUGES U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Instruments EARTH SCIENCE > TERRESTRIAL HYDROSPHERE > GROUND WATER > GROUND WATER PROCESSES/MEASUREMENTS > DISCHARGE U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2026-04-15 revision 23.7 NASA Global Change Master Directory orginator Valids List: Science and Services Keywords Creative Commons Attribution 4.0 International License None eng utf-8 climatologyMeteorologyAtmosphere 1900 2012 NSF NCAR Geoscience Data Exchange datahelp@ucar.edu https://gdex.ucar.edu distributor 62.973 https://gdex.ucar.edu/datasets/d550000/ https Dataset Description Related Link information https://gdex.ucar.edu/datasets/d550000/dataaccess/ https Data Access Related Link download none asNeeded