Filters: Tags: Hydrograph separation (X) > partyWithName: Christopher P Konrad (X)

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Non-linear baseflow separation model with parameters and results (ver. 2.0, October 2022) This data release provides source code and an R workspace with functions comprising a non-linear baseflow separation model, calibrated values of parameters and estimates of the baseflow component of daily streamflow at selected streamflow gages. Parameter values were determined by calibration of the model. Estimates of the baseflow component include daily values and the total baseflow as a fraction of streamflow for the analysis period. The file 'run_bf_sep.zip' in the directory 'Nonlinear Baseflow Model Source Code, Functions, and Scripts" has a complete set of model functions, parameters for 13,208 USGS streamflow gages, and a script to run the model. Instructions and software requirements for running the model... Categories: Data, Data Release - Revised; Tags: USGS Science Data Catalog (SDC), United States, baseflow, hydrograph separation, mathematical modeling, All tags... streamflow, Fewer tags Nonlinear Baseflow Model Parameters for USGS and other Agency Gages (ver. 2.0, October 2022) Site-specific parameters for a non-linear baseflow separation model determined by automated calibration to maximize baseflow. The file "bf_param_usgs.csv" has parameter values for 13,208 sites where USGS operated a streamflow gage and calculated daily streamflow for at least 300 days from water year 1981 to 2020. The file "bf_param_wa_ecy.csv" has parameter values for 41 sites where the Washington Department of Ecology operated a streamflow gage from water year 1991 to 2019. The parameters may need to be re-calibrated at a site for some applications. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Baseflow Time Series for Selected USGS Gages (ver. 2.0, October 2022) Daily estimates of baseflow derived from a non-linear, baseflow separation model. The file "baseflow_western_washington.csv" has daily baseflow estimates for 268 sites in western Washington for the period from water year 1981 to 2020 used for estimating groundwater recharge in lowland areas. The file "baseflow_rsqa.csv" has daily baseflow estimates for 462 sites that were sampled as part of the US Geological Survey Regional Stream Qualtiy Assessment (RSQA). Values are only provided for days when water samples were collected. Missing values indicate gaps in the streamflow record. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Baseflow Fractions at USGS Gages for Water Years 1981 to 2020 (ver. 2.0, October 2022) Simulated daily baseflow was summed from water year 1981 to 2020 and divided by observed streamflow at 13,208 sites where US Geological Survey operated a streamflow gage and calculated daily streamflow for at least 300 days. Days with negative flows (tidal systems) are not included. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow Nonlinear Baseflow Model Source Code, Functions, and Scripts (ver. 2.0, October 2022) Source code, an R workspace with functions comprising a non-linear baseflow separation model, and a complete set of files to run the model in a compressed file including a script that will demonstrate how to run the model. Categories: Data; Tags: United States, baseflow, hydrograph separation, mathematical modeling, streamflow