This data release contains inputs for and outputs from hydrologic simulations for Puerto Rico using the Precipitation Runoff Modeling System (PRMS) version 5.2.1, the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018), National Hydrologic Geospatial Fabric version 1.0 (Viger and Bock, 2014), and the Daymet version 4 (Thornton et. al., 2020) atmospheric forcing dataset. These simulations were developed to provide estimates of the water budget for the period 1950 to 2021. The model parameters and associated model output included in this data release are described in Swain and Bellino (2022). Specific data included are: 1) model input files, 2) output files of simulated water budget components for each hydrologic response unit (HRU) and stream segment, and 3) performance statistics at selected streamgage locations. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analysis. Model input files, located on the “ Input Data for Hydrologic Simulations of Puerto Rico using the NHM-PRMS, 1950-2021, Daymet version 4” child page, include ASCII formatted PRMS input files of 1) daily time step atmospheric forcings of minimum air temperature (tmin.day), maximum air temperature (tmax.day), precipitation accumulation (precip.day), and humidity (humidity.day), 2) PRMS model parameters (NHM-PRMS.param), 3) a PRMS control file that provides the simulation configuration information (NHM-PRMS_data_release.control), 4) and the PRMS data file that includes time series of streamflow observations (sf_data). Descriptions of model input parameters are included in the parameters_data_dictionary.csv file on this main page. Descriptions of control file parameters are included in the control_data_dictionary.csv file on this main page. Additional information about the model calibration and associated parameters is provided in Swain and Bellino (2022). Model output files, located on the “Output Data for Hydrologic Simulations of Puerto Rico using the NHM-PRMS, 1950-2021, Daymet version 4” child page, include 18 PRMS output variables for the model simulation. Each NetCDF format output file contains daily time step outputs for the period 1950-2021 for each hydrologic response unit or stream segment in the model application. Descriptions of model output variables are included in the output_variables_data_dictionary.csv file on this main page. Streamflow statistics of model performance at selected streamgages are located on this main page (gage_stats_pr.csv).

This data release contains inputs for and outputs from hydrologic simulations for Puerto Rico using the Precipitation Runoff Modeling System (PRMS) version 5.2.1, the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018), National Hydrologic Geospatial Fabric version 1.0 (Viger and Bock, 2014), and the Daymet version 4 (Thornton et. al., 2020) atmospheric forcing dataset. These simulations were developed to provide estimates of the water budget for the period 1950 to 2021. The model parameters and associated model output included in this data release are described in Swain and Bellino (2022). Specific data included are: 1) model input files, 2) output files of simulated water budget components for each hydrologic response unit (HRU) and stream segment, and 3) performance statistics at selected streamgage locations. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analysis. Model input files, located on the “ Input Data for Hydrologic Simulations of Puerto Rico using the NHM-PRMS, 1950-2021, Daymet version 4” child page, include ASCII formatted PRMS input files of 1) daily time step atmospheric forcings of minimum air temperature (tmin.day), maximum air temperature (tmax.day), precipitation accumulation (precip.day), and humidity (humidity.day), 2) PRMS model parameters (NHM-PRMS.param), 3) a PRMS control file that provides the simulation configuration information (NHM-PRMS_data_release.control), 4) and the PRMS data file that includes time series of streamflow observations (sf_data). Descriptions of model input parameters are included in the parameters_data_dictionary.csv file on this main page. Descriptions of control file parameters are included in the control_data_dictionary.csv file on this main page. Additional information about the model calibration and associated parameters is provided in Swain and Bellino (2022). Model output files, located on the “Output Data for Hydrologic Simulations of Puerto Rico using the NHM-PRMS, 1950-2021, Daymet version 4” child page, include 18 PRMS output variables for the model simulation. Each NetCDF format output file contains daily time step outputs for the period 1950-2021 for each hydrologic response unit or stream segment in the model application. Descriptions of model output variables are included in the output_variables_data_dictionary.csv file on this main page. Streamflow statistics of model performance at selected streamgages are located on this main page (gage_stats_pr.csv).

This data release contains 16 variables from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System (NHM-PRMS) modeling application forced with Daymet version 4 (LaFontaine and others, 2024) from January 1950 through December 2021 that are summarized to a monthly time step and a twelve-digit hydrologic unit code for the spatial extent of Puerto Rico and the U.S. Virgin Islands. The following fluxes and storages are included: total monthly precipitation, evapotranspiration, lateral flow, surface runoff, interflow, recharge, groundwater flow, and the average monthly snow water equivalent, interflow storage, groundwater storage, total storage, and soil moisture. These data can be found in the “PR_huc12_monthly_nhmprms_daymet_1950_2021.nc” file. Additionally, two supplementary files are also included in this data release. The first file (“PR_weights_hru_to_huc12_nhmprms_daymet.csv”) contains the spatial weights or fraction that is used to “weight” the modeling output in the area-weighting process. The second file (“PR_summed_weights_per_huc12_nhmprms_daymet.csv”) contains the total fractional area within each twelve-digit hydrologic unit code that is covered by the modeling output and is important for filtering results in the data file (where a fractional coverage may be less than one). In the version 2.0 data release update, a new variable was added to the “PR_huc12_monthly_nhmprms_daymet_1950_2021.nc” file and a new file, "PR_huc12_daily_soil_moisture_fraction_nhmprms_paymet_1950_2021.nc" was added that contains daily estimates of the soil moisture fraction at each twelve-digit hydrologic unit code for the spatial extent of Puerto Rico and the U.S. Virgin Islands. See the file, “revision_history_nhmprms_daymet_PR.txt” for a full description of revisions.

This data release contains 16 variables from the National Hydrologic Model Infrastructure with the Precipitation-Runoff Modeling System (NHM-PRMS) modeling application forced with Daymet version 4 (LaFontaine and others, 2024) from January 1950 through December 2021 that are summarized to a monthly time step and a twelve-digit hydrologic unit code for the spatial extent of Puerto Rico and the U.S. Virgin Islands. The following fluxes and storages are included: total monthly precipitation, evapotranspiration, lateral flow, surface runoff, interflow, recharge, groundwater flow, and the average monthly snow water equivalent, interflow storage, groundwater storage, total storage, and soil moisture. These data can be found in the “PR_huc12_monthly_nhmprms_daymet_1950_2021.nc” file. Additionally, two supplementary files are also included in this data release. The first file (“PR_weights_hru_to_huc12_nhmprms_daymet.csv”) contains the spatial weights or fraction that is used to “weight” the modeling output in the area-weighting process. The second file (“PR_summed_weights_per_huc12_nhmprms_daymet.csv”) contains the total fractional area within each twelve-digit hydrologic unit code that is covered by the modeling output and is important for filtering results in the data file (where a fractional coverage may be less than one). In the version 2.0 data release update, a new variable was added to the “PR_huc12_monthly_nhmprms_daymet_1950_2021.nc” file and a new file, "PR_huc12_daily_soil_moisture_fraction_nhmprms_paymet_1950_2021.nc" was added that contains daily estimates of the soil moisture fraction at each twelve-digit hydrologic unit code for the spatial extent of Puerto Rico and the U.S. Virgin Islands. See the file, “revision_history_nhmprms_daymet_PR.txt” for a full description of revisions.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.2.1 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1980 to 2021 for one pre-calibration and three calibration configurations: 1) calibration by hydrologic response unit (byHRU), 2) calibration by select headwaters (byHW), and 3) calibration by select headwaters with streamflow observations (byHWobs). The four versions of model parameters and associated model output included in this data release are described in Hay and others (2023). The first three years of the simulations are considered “model initialization” and should not be included in any subsequent analysis. Model input files, located on the “Input Data for Hydrologic Simulations of the CONUS using the NHM-PRMS version 1.1, CONUS404BA Calibration” child page, include ASCII formatted PRMS input files of 1) daily time step atmospheric forcings of minimum air temperature (tmin.zip), maximum air temperature (tmax.zip), and precipitation accumulation (precip.zip), 2) four parameter files for the different calibration versions (c404BA_precal_myparam.zip, c404BA_byHRU_myparam.zip, c404BA_byHW_myparam.zip, and c404BA_byHWobs_myparam.zip), 3) a PRMS control file that provides the simulation configuration information (NHM-PRMS_data_release.control), 4) and the PRMS data file that includes time series of streamflow observations (sf_data.zip). Descriptions of model input parameters are included in the parameters_data_dictionary.csv file on this main page. Descriptions of control file parameters are included in the control_data_dictionary.csv file on this main page. Additional information about the model calibration and associated parameters is provided in Hay and others (2023). Additional information about the bias-adjusted CONUS404 (CONUS404BA) atmospheric forcings used for the model application is provided in Zhang and others (2024). Model output files, located on the “Output Data for Hydrologic Simulations of the CONUS using the NHM-PRMS version 1.1, CONUS404BA Calibration” child page, include 18 PRMS output variables for each of the four model simulations corresponding with the four input parameter files (pre-calibration, byHRU, byHW, and byHWobs). Each NetCDF format output file contains daily time step outputs for the period 1980-2021 for each hydrologic response unit or stream segment in the model application. Descriptions of model output variables are included in the output_variables_data_dictionary.csv file on this main page. Streamflow statistics of model performance at selected streamgages are located on the “Simulated streamflow and statistics at streamgages for NHM CONUS CONUS404BA Calibrations, 1980-2021” child page. Each of the four model simulations has an associated csv file of streamflow statistics (gage_stats_c404-bc_.csv) and a NetCDF file of daily streamflow at each streamgage (NHM-PRMS_data_release.nc). Descriptions of the streamflow files are included in the simulated_streamflow_data_dictionary.csv file on this main page.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.2.1 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1980 to 2021 for one pre-calibration and three calibration configurations: 1) calibration by hydrologic response unit (byHRU), 2) calibration by select headwaters (byHW), and 3) calibration by select headwaters with streamflow observations (byHWobs). The four versions of model parameters and associated model output included in this data release are described in Hay and others (2023). The first three years of the simulations are considered “model initialization” and should not be included in any subsequent analysis. Model input files, located on the “Input Data for Hydrologic Simulations of the CONUS using the NHM-PRMS version 1.1, CONUS404BA Calibration” child page, include ASCII formatted PRMS input files of 1) daily time step atmospheric forcings of minimum air temperature (tmin.zip), maximum air temperature (tmax.zip), and precipitation accumulation (precip.zip), 2) four parameter files for the different calibration versions (c404BA_precal_myparam.zip, c404BA_byHRU_myparam.zip, c404BA_byHW_myparam.zip, and c404BA_byHWobs_myparam.zip), 3) a PRMS control file that provides the simulation configuration information (NHM-PRMS_data_release.control), 4) and the PRMS data file that includes time series of streamflow observations (sf_data.zip). Descriptions of model input parameters are included in the parameters_data_dictionary.csv file on this main page. Descriptions of control file parameters are included in the control_data_dictionary.csv file on this main page. Additional information about the model calibration and associated parameters is provided in Hay and others (2023). Additional information about the bias-adjusted CONUS404 (CONUS404BA) atmospheric forcings used for the model application is provided in Zhang and others (2024). Model output files, located on the “Output Data for Hydrologic Simulations of the CONUS using the NHM-PRMS version 1.1, CONUS404BA Calibration” child page, include 18 PRMS output variables for each of the four model simulations corresponding with the four input parameter files (pre-calibration, byHRU, byHW, and byHWobs). Each NetCDF format output file contains daily time step outputs for the period 1980-2021 for each hydrologic response unit or stream segment in the model application. Descriptions of model output variables are included in the output_variables_data_dictionary.csv file on this main page. Streamflow statistics of model performance at selected streamgages are located on the “Simulated streamflow and statistics at streamgages for NHM CONUS CONUS404BA Calibrations, 1980-2021” child page. Each of the four model simulations has an associated csv file of streamflow statistics (gage_stats_c404-bc_.csv) and a NetCDF file of daily streamflow at each streamgage (NHM-PRMS_data_release.nc). Descriptions of the streamflow files are included in the simulated_streamflow_data_dictionary.csv file on this main page.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.2.1 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1979 to 2021 for one pre-calibration and three calibration configurations: 1) calibration by hydrologic response unit (byHRU), 2) calibration by select headwaters (byHW), and 3) calibration by select headwaters with streamflow observations (byHWobs). The three versions of model parameters and associated model output included in this data release are described in Hay and others (2023). Specific file types include: 1) input atmospheric forcings of minimum air temperature, maximum air temperature, and daily precipitation accumulation derived from a gridded observation-based dataset developed by Abatzoglou (2013), 2) input parameter files, 3) output files of simulated water budget components for each hydrologic response unit and stream segment, and 4) performance statistics at selected streamgage locations. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analysis.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.2.1 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1979 to 2021 for one pre-calibration and three calibration configurations: 1) calibration by hydrologic response unit (byHRU), 2) calibration by select headwaters (byHW), and 3) calibration by select headwaters with streamflow observations (byHWobs). The three versions of model parameters and associated model output included in this data release are described in Hay and others (2023). Specific file types include: 1) input atmospheric forcings of minimum air temperature, maximum air temperature, and daily precipitation accumulation derived from a gridded observation-based dataset developed by Abatzoglou (2013), 2) input parameter files, 3) output files of simulated water budget components for each hydrologic response unit and stream segment, and 4) performance statistics at selected streamgage locations. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analysis.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.1.0 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1950 to 2010. Specific file types include: 1) input atmospheric forcings of minimum air temperature, maximum air temperature, and daily precipitation accumulation derived from a gridded observation-based dataset developed by Maurer and others (2002), 2) input parameter files for static and dynamic land cover conditions, and 3) output files of simulated water budget components for each hydrologic response unit and stream segment. Figure 1 shows the calibration methodology that was used for the model application (see LaFontaine and others, 2019 for additional information). Table 1 lists the streamgages that are included in the model application. Table 2 lists the calibration datasets that were used in addition to USGS measured streamflow. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analsysis.

This data release contains inputs for and outputs from hydrologic simulations for the conterminous United States (CONUS) using the Precipitation Runoff Modeling System (PRMS) version 5.1.0 and the USGS National Hydrologic Model infrastructure (NHM, Regan and others, 2018). These simulations were developed to provide estimates of the water budget for the period 1950 to 2010. Specific file types include: 1) input atmospheric forcings of minimum air temperature, maximum air temperature, and daily precipitation accumulation derived from a gridded observation-based dataset developed by Maurer and others (2002), 2) input parameter files for static and dynamic land cover conditions, and 3) output files of simulated water budget components for each hydrologic response unit and stream segment. Figure 1 shows the calibration methodology that was used for the model application (see LaFontaine and others, 2019 for additional information). Table 1 lists the streamgages that are included in the model application. Table 2 lists the calibration datasets that were used in addition to USGS measured streamflow. The first three years of the simulations are considered 'model initialization' and should not be included in any subsequent analsysis.