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Water Balance Model Inputs and Outputs for the Conterminous United States, 1900-2015 This metadata record describes monthly input and output data covering the period 1900-2015 for a water-balance model described in McCabe and Wolock (2011). The input datasets are precipitation (PPT) and air temperature (TAV) from the PRISM group at Oregon State University. The model outputs include estimated potential evapotranspiration (PET), actual evapotranspiration (AET), runoff (RUN) (streamflow per unit area), soil moisture storage (STO), and snowfall (SNO). The datasets are arranged in tables of monthly total or average values measured in millimeters or degrees C and then multiplied by 100. The data are indexed by the identifier PRISMID, which refers to an ASCII raster of cells in an associated file named... Types: Citation; Tags: Conterminous United States, National Water Quality Program, USGS Science Data Catalog (SDC), Water Resources, evaporation, All tags... precipitation, streamflow, temperature, Fewer tags USGS monthly water balance model inputs and outputs for the conterminous United States, 1895-2020, based on ClimGrid data This NetCDF represents the monthly inputs and outputs from a United States Geological Survey water-balance model (McCabe and Wolock, 2011) for the conterminous United States for the period 1895-01-01 to 2020-12-31. The source data used to run the water balance model is based on the National Oceanic and Atmospheric Administration's(Vose and others, 2020) ClimGrid data for precipitation and temperature. This NetCDF contains the following monthly inputs: temperature (degrees Celsius) and precipitation (millimeters, mm) and the following outputs (all in mm): runoff, soil moisture storage, actual evapotranspiration, potential evapotranspiration, snow water equivalent, and snowfall. The spatial reference for this data... Tags: AIR TEMPERATURE, CONUS, Climatology, EVAPORATION, EVAPOTRANSPIRATION, All tags... FRESHWATER RUNOFF, Geography, Hydrology, POTENTIAL EVAPOTRANSPIRATION, PRECIPITATION, PRECIPITATION AMOUNT, RUNOFF, SNOW WATER EQUIVALENT, SOIL MOISTURE, USGS Science Data Catalog (SDC), Water Resources, actual evapotranspiration, conterminous United States, environment, geoscientificInformation, inlandWaters, liquid content of surface snow, liquid content of water, potential evapotranspiration, precipitation, precipitation amount, runoff amount, snow water equivalent, snowfall, snowfall amount, soil moisture storage, surface water runoff, temperature, water actual evaporation amount, water balance model, water potential evaporation amount, Fewer tags Latitude and Longitude of PRISMID Values This metadata record provides the latitude, longitude, and a unique ID value (PRISMID) for all raster cells used by the PRISM group at Oregon State University to characterize climate throughout the conterminous United States. The three column format of comma-separated data can be readily joined to the comma-separated climate and water-balance variables described in the associated metadata file "Water Balance Model Inputs and Outputs for the Conterminous United States". Categories: Data; Types: Citation; Tags: Conterminous United States, climate change Dam impact/disturbance metrics for the conterminous United States, 1800 to 2018 This metadata record describes two metrics that quantitatively measure the impact of reservoir storage on every flowline in the NHDPlus version 2 data suite (NHDPlusV2) for the conterminous United States. These metrics are computed for every 10 years from 1800 - 2015. The first metric (DamIndex_EROM.zip) estimates reservoir storage intensity in units of days based on reservoir storage in a contributing area normalized by the mean annual streamflow. This metric indicates the duration of storage impact upstream from each stream segment relative to the typical flow condition. In addition, this metric provides an assessment of the potential influence of a dam on average and low flows because the metric estimates the... Tags: National Inventory of Dams, USGS Science Data Catalog (SDC), Water Resources, contiguous United States, dams, All tags... inlandWaters, reservoir impact, reservoir storage, Fewer tags Trends in selected streamflow metrics at reference streamgages in the conterminous United States, 1955-2014 This dataset includes four tables related to annual trends in streamflow metrics at 599 reference streamgages in the conterminous United States for the period 1955-2014. Reference streamgages are defined here as gages with drainage basins that are minimally impacted by anthropogenic effects such as reservoirs or urbanization. The four tables are: 1) computed annual values for 16 streamflow metrics, 2) trend estimates for the 16 streamflow metrics for the period 1955-2014, 3) metric names and definitions, and 4) location information (latitude and longitude) for the 599 sites. The computed annual values for the 16 streamflow metrics are: low flow magnitude, low flow frequency, low flow duration, high flow magnitude,... Categories: Data; Tags: Conterminous U.S., Sen slope, USGS Science Data Catalog (SDC), Water Resources, reference sites, All tags... streamflow metrics, trends, Fewer tags Clusters of monthly streamflow values with similar temporal patterns at 555 HCDN (Hydro-Climatic Data Network) sites for the period 1981 to 2019 This data release identifies 555 Hydro-Climatic Data Network (HCDN) streamgages in the conterminous United States during the period 1981-2019 which were grouped according to similarity in their temporal patterns of monthly streamflow. Categories: Data; Tags: Climatology, GAGES-II, Hydro-Climatic Data Network, Hydrology, USGS Science Data Catalog (SDC), All tags... United States, cluster analysis, inland waters, streamflow, streamflow patterns, streamgages, Fewer tags Low-streamflow and precipitation trends for 183 U.S. Geological Survey streamgages in the Chesapeake Bay Watershed This data release contains low-streamflow trend results from 183 U.S. Geological Survey (USGS) streamgages and precipitation trend results from gaged watersheds within the Chesapeake Bay Watershed. Data include streamgage identification number, trend slopes and significance for several low-streamflow and precipitation metrics. Categories: Data; Tags: Chesapeake Bay Watershed, Chesapeake Bay Watershed, Hydrology, Streamflow, USGS Science Data Catalog (SDC), All tags... inlandWaters, low flows, trends, Fewer tags Monthly Streamflows, Drought Indices, and Supporting Statistics for USGS Gage Stations Used to Identify Variability of Hydrological Droughts in the Conterminous United States, 1951 through 2014 A table is presented listing: (1) monthly streamflows, (2) drought duration dates, (3) drought severity indices, (4) supporting statistics, and (5) identification tags, for analysis of hydrological droughts in the Conterminous United States (CONUS). Data were summarized from USGS streamflow daily values (DV), readily available from the U.S. Geological Survey National Water Information System (NWIS), for USGS gage stations used in SIR 2017-5099 Variability of Hydrological Droughts in the Conterminous United States, 1951 through 2014 by Samuel H. Austin, David M. Wolock, and David L. Nelms. https://doi. org/10.3133/sir20175099 Types: Citation; Tags: CONUS, USGS Science Data Catalog (SDC), Water Resources, decision support methods, droughts, All tags... hydrology, risk assessment, streamflow, water supply and demand, watershed management, Fewer tags Natural Monthly Flow Estimates for the Conterminous United States, 1950-2015 This metadata record describes monthly estimates of natural stream flows for greater than 2.5 million stream reaches, defined by the National Hydrography Dataset (NHD) Version 2.0, in the conterminous United States for the period 1950-2015. A statistical machine learning technique - random forest modeling - was applied to estimate natural flows using 200 potential predictor variables. The dataset is organized by level 3 ecoregions, with each ecoregion having its own directory. Separate .csv files for each stream reach in the NHD network belonging to a given ecoregion are contained within the respective ecoregion directories. The stream reach .csv files are named as the NHD COMID corresponding to that stream reach.... Tags: Conterminous United States, National Water Quality Program, USGS Science Data Catalog (SDC), Water Resources, hydrology, All tags... river reaches, streamflow, water resources, Fewer tags Low-Flow Period Seasonality, Trends, and Climate Linkages Across the United States Data Release This metadata record describes data that characterize low-flow period duration and seasonality, as well as trends and climate linkages at streamgages across the conterminous United States. These data are associated with a publication which looks to answer three questions about low-flow periods in the conterminous United States: (1) how long are these periods and when do they typically start and end, (2) how are these properties changing through time, and (3) how does climate influence these properties? These data include 1145 U.S. Geological Survey streamgages with historical periods from 1951-2020. This data release contains the following: 1) low_flow_characteristics.csv: Annual low-flow period characteristics... Categories: Data; Tags: CONUS, Ecological Flows, Hydrology, Hydrology, Low Flows, All tags... USGS Science Data Catalog (SDC), United States, climatologyMeteorologyAtmosphere, datasets, hydrology, inlandWaters, stream discharge, streamflow, surface water (non-marine), Fewer tags Empirical Models for Estimating Baseline Streamflows in California and their Likelihood of Anthropogenic Modification The dataset contain estimates of natural monthly streamflow for 135,118 stream segments in California, USA, from 1950 to 2012. These estimates were made using statistical models described in Carlisle and others, 2016, Open File Report 2016-1189. Segments are identified per the medium resolution National Hydrography Dataset (NHD), Version 1. The dataset also contains observed monthly streamflows and estimates of natural monthly streamflows for 894 USGS stream gages in California, USA. Categories: Data; Tags: California, California, National Hydrography Dataset, National Water Quality Program, Statistical model, All tags... Streamflow, Streamflow alteration, USGS Science Data Catalog (SDC), Water Resources, Fewer tags