Timothy O Hodson

Daily streamflow performance benchmark defined by the standard statistical suite (v1.0) for the National Water Model Retrospective (v2.1) at benchmark streamflow locations for the conterminous United States (ver 3.0, March 2023)

This data release contains the standard statistical suite (version 1.0) daily streamflow performance benchmark results for the National Water Model Retrospective (v2.1) at streamflow benchmark locations defined by Foks and others (2022). Modeled hourly timesteps were converted to mean daily timesteps. Model error was determined by evaluating predicted daily mean streamflow versus observed daily mean streamflow using various statistics; the Nash-Sutcliffe efficiency (NSE), the Kling-Gupta efficiency (KGE), the logNSE, the Pearson correlation coefficient, the Spearman correlation coefficient, the ratio of the standard deviation, the percent bias, the percent bias in flow duration curve midsegment slope, the percent...

Categories: Data, Data Release - Revised; Tags: Model evaluation, Streamflow prediction, USGS Science Data Catalog (SDC), conterminous United States, hydrology, All tags... inlandWaters, statistical analysis, streamflow, Fewer tags

Estimated nutrient and sediment concentrations from major rivers in Illinois based on continuous monitoring from October 1, 2015, through September 30, 2021

During water years 2016–2021 (a water year begins on October 1 and ends on September 30 and is designated by the year in which it ends), the U.S. Geological Survey (USGS), in cooperation with the Illinois Environmental Protection Agency (Illinois EPA), operated continuous monitoring stations on eight of the major rivers in Illinois to better quantify nutrient and sediment loadings from the State of Illinois to the Mississippi River. These eight rivers are the Illinois River, Rock River, Little Wabash River, Kaskaskia River, Vermilion River, Embarras River, Big Muddy River, and Green River. This data release presents estimates of daily nitrate, phosphorus, and suspended sediment concentrations and uncertainty over...

Categories: Data; Tags: Big Muddy, IL, Embarras River, IL, Green River, IL, Illinois, Illinois (IL), All tags... Illinois River, IL, Kaskaskia River, IL, Little Wabash River, IL, Rock River, IL, USGS Science Data Catalog (SDC), Vermilion River, IL, Fewer tags

Modeled nutrient and sediment concentrations from major rivers in Illinois based on continuous monitoring from October 1, 2015, through September 30, 2020

During water years 2016–2020, the U.S. Geological Survey, in cooperation with the Illinois Environmental Protection Agency, operated continuous monitoring stations on eight of the major rivers in Illinois to better quantify nutrient and sediment loadings from the State of Illinois to the Mississippi River. This data release presents estimates of daily nitrate, suspended sediment, and phosphorus concentrations and uncertainty from that period. The concentration estimates are based on a combination of discrete sampling data and surrogate regression (imputation). The data release comprises a single csv file containing daily timeseries of concentration and uncertainty for each monitoring station.

Categories: Data; Tags: Hydrology, Illinois, USGS Science Data Catalog (SDC), continuous monitoring, nitrate, All tags... suspended-sediment concentration, total phosphorus, water quality, Fewer tags

Streamflow benchmark locations for hydrologic model evaluation within the conterminous United States (cobalt gages)

A list of stream gages within the conterminous United States that will serve as the initial list of sites (version 1.0) used for streamflow benchmarking of hydrologic models. Sites within this list were chosen based on their presence in the GAGES-II dataset, their availability of modeled streamflow data from the most recent version of the National Hydrologic Model application of Precipitation-Runoff Modeling System v1.0, and their availability of modeled streamflow data from the most recent version of the NOAA National Water Model application of WRF-hydro version 2.1 retrospective dataset.

Categories: Data; Tags: Climatology, Hydrology, Information Sciences, USGS Science Data Catalog (SDC), United States, All tags... Water Quality, Water Resources, field monitoring stations, inlandWaters, mathematical modeling, streamflow, Fewer tags

Mean squared logarithmic error in daily mean streamflow predictions at GAGES-II reference streamgages

This data release contains daily mean squared logarithmic error (MSLE), as well as several decompositions of the MSLE, for three streamflow models: nearest-neighbor drainage area ratio (NNDAR), a simple statistical model that re-scales streamflow data from the nearest streamgage; the version 3.0 calibration of the National Hydrologic Model Infrastructure application of the Precipitation-Runoff Modeling System (NHM-PRMS); and version 2.0 of the National Water Model (NWM). Error was determined by evaluating each model daily against streamflow observations from 1,021 ‘reference’ (minimally anthropogenically impacted [Falcone, 2011]) watersheds across the conterminous United States with at least 10 years of observations....

Categories: Data; Tags: Climatology, Hydrology, Mean squared error, Model evaluation, Streamflow prediction, All tags... USGS Science Data Catalog (SDC), United States, climatologyMeteorologyAtmosphere, Fewer tags