Watershed Data Management (WDM) database file WBDR18.WDM is updated with the quality-assured and quality-controlled meteorological and hydrologic data for the period October 1, 2018, through September 30, 2019, following the guidelines documented in Bera (2017) and is renamed as WBDR19.WDM. Meteorological data other than precipitation (wind speed, solar radiation, air temperature, dewpoint temperature, and potential evapotranspiration) were copied from ARGN19.WDM and stored in this WDM file. Errors have been found in each of ARGNXX.WDM prior to Water Year (WY) 2023. XX represents last two digits of a WY. A WY is the 12-month period, October 1 through September 30, in which it ends. WBDR19.WDM contains erroneous meteorological data and related flag values thereby. WBDR19.WDM is removed. User is advised to download WBDR22.WDM from https://doi.org/10.5066/P1LDIASU. WBDR22.WDM contains corrected meteorological data from ARGN23.WDM (Bera, 2024a) for the period from January 1, 1997, through September 30, 2022. This database file also contains the quality-assured and quality-controlled hydrologic data for the period January 1, 1997, through September 30, 2022, processed following the guidelines documented in Bera (2017). While WBDR19.WDM is available from the author, all the records in WBDR19.WDM can be found in WBDR22.WDM as well. This version of data release describes the watershed data management (WDM) database file WBDR22.WDM (Bera, 2024b). It contains the quality-assured and quality-controlled meteorological and hydrologic data for the period October 1, 2007, through September 30, 2022, following the guidelines documented in Bera (2017). Data in dataset number (DSN) 107 and 801–811 are used in comparisons of precipitation data. DSN 107 contains hourly precipitation data from tipping bucket raingages collected at Argonne National Laboratory at Argonne, Illinois. DSN 801-811 contains the processed Next Generation Weather Radar (NEXRAD)-Multisensor Precipitation Estimates (MPE) data from 11 NEXRAD–MPE subbasins in the West Branch DuPage River watershed as described in Bera and Ortel (2018). The data are downloaded and uploaded daily into a WDM database that is used for the real-time streamflow simulation system. Data from DSN 107 and 801-811 are copied from this WDM and stored in WBDR22.WDM. DSN 107 and 801-811 are updated with the data through September 30, 2022. Data in DSN 4031 (water-surface elevation from West Branch DuPage River at Fawell Dam) is updated through September 30, 2022, similarly (Bera, 2017). The complete list of missing precipitation data period and the nearby stations used to fill in those missing periods from October 1, 2018, through September 30, 2019, is given in the table, missing_data (available in csv format). The list of snow affected days of precipitation data and the missing and estimated period of the stage and flow data in WBDR22.WDM database during the period October 1, 2018, through September 30, 2019, are given in the USGS annual Water Data Report at https://wdr.water.usgs.gov. To open WBDR22.WDM file user needs to install Sara Timeseries utility described in the section "Related External Resources". First posted - March 1, 2021 (available from author) References Cited: Bera, M., 2024a, Meteorological Database, Argonne National Laboratory, Illinois: U.S. Geological Survey data release, https://doi.org/10.5066/P146RBHK. ____ 2024b, Watershed Data Management (WDM) Database (WBDR22.WDM) for West Branch DuPage River Streamflow Simulation, DuPage County, Illinois, January 1, 2007, through September 30, 2022: U.S. Geological Survey data release, https://doi.org/10.5066/P1LDIASU. Bera, M., and Ortel, T.W., 2018, Processing of next generation weather radar-multisensor precipitation estimates and quantitative precipitation forecast data for the DuPage County streamflow simulation system: U.S. Geological Survey Open-File Report 2017–1159, 16 p., https://doi.org/10.3133/ofr20171159. Bera, M., 2017, Watershed Data Management (WDM) database for West Branch DuPage River streamflow simulation, DuPage County, Illinois, January 1, 2007, through September 30, 2013: U.S. Geological Survey Open-File Report 2017–1099, 39 p., https://doi.org/10.3133/ofr20171099.