Maitreyee Bera 20190724 The data is available as Watershed Data Management (WDM) database format (.wdm) from the link https://www.sciencebase.gov/catalog/item/65f22722d34e1403329846b0. Denver, CO U.S. Geological Survey https://doi.org/10.5066/P99Y7W4Q The watershed data management (WDM) database SC16.WDM is updated with the processed data for the period October 1, 2016, through September 30, 2017, and renamed as SC17.WDM. The precipitation data are collected from a tipping-bucket rain-gage network and the hydrologic data (stage and discharge) are collected at USGS streamflow-gaging stations in and around DuPage County, Illinois. Hourly precipitation and hydrologic data for the period October 1, 2016, through September 30, 2017, are processed following the guidelines described in Bera (2014) and appended to SC16.WDM and renamed as SC17.WDM. Meteorological data (wind speed, solar radiation, air temperature, dewpoint temperature, and potential evapotranspiration) from October 1, 2016, through September 30, 2017, are copied from ARGN17.WDM and appended to SC17.WDM. Data in dataset number (DSN) 107 and 801–810 are used in comparisons of precipitation data. DSN 107 contains hourly precipitation data collected at Argonne National Laboratory at Argonne, Illinois. DSN 801-810 contains the processed Next Generation Weather Radar (NEXRAD)-Multisensor Precipitation Estimates (MPE) data from 10 NEXRAD–MPE subbasins in the Salt Creek watershed as described in Bera and Ortel (2018). Data in these DSNs are not quality-assured and quality-controlled. 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 801-810 are copied from this WDM and stored in SC17.WDM. DSN 107 and 801-810 are updated with the data through September 30, 2017. Data in DSN 5400 (water-surface elevation at the quarry) and 5700 (water surface elevation at Thorndale) are updated through September 30, 2017, similarly (Murphy and Ishii, 2006). Each rain gage station uses one of two different data loggers: the HOBO® or the WaterLOG® H-522+ XL™ Data Collection Platform (DCP). During the period October 1, 2016, through September 30, 2017, the daily total value (in the water year summary for water year 2017) from the rain gage using the HOBO® logger did not match with the sum of the instantaneous values pulled from NWIS-WEB for several days. This is due to multiple tips occurring within the same minute. NWIS-WEB only counts the first tip and ignores any other tips that occur within the same minute. HOBO® loggers only record the time of a tip, and the data is post processed to apply midnight time stamps and backfill 5- or 15- minute instantaneous values into the data log. The multiple tips occurring in the same minute are accurate, thus so is the daily total in the water year summary table. Table 1 shows the list of station(s) using the HOBO® logger that had different daily total rainfall in the Water Data Report than those computed from the data pulled from NWIS-WEB. The days with the difference of 0.03 inches or more are filled with the nearby stations as listed in Table 1. The DCP loggers on the other hand, provide a value or data point every 5- or 15- minutes. The rain gage using a DCP logger does not show any such difference from the instantaneous values pulled from NWIS-WEB. Errors have been found in each of ARGNXX.WDM prior to WY23. XX represents last two digits of a water year (WY). A WY is the 12-month period, October 1 through September 30, in which it ends. SC17.wdm contains erroneous meteorological data and related flag values thereby. SC17.WDM is removed. User is advised to download SC22.WDM from a link at https://doi.org/10.5066/P14D6FRA. SC22.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 (2014). While SC17.WDM is available from the author, all the records in SC17.WDM can be found in SC22.WDM as well. The complete list of missing precipitation data periods and the nearby stations used to fill in those missing periods from October 1, 2016, through September 30, 2017, is given in Table 2. The list of snow affected days of precipitation data and the missing and estimated period of the stage and flow data in SC22.WDM database during the period October 1, 2016, through September 30, 2017, are given in the USGS annual Water Data Report at https://waterdata.usgs.gov/nwis. To open the WDM database SC22.WDM user needs to install Sara Timeseries utility described in the section "Related External Resources". First posted - July 24, 2019 (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 (SC22.WDM) for Salt Creek Streamflow Simulation, DuPage County, Illinois, January 1, 1997, through September 30, 2022: U.S. Geological Survey, https://doi.org/10.5066/P14D6FRA. Bera, M., and Over, T.M., 2018, Meteorological Database, Argonne National Laboratory, Illinois, January 1, 1948 - September 30, 2017: U.S. Geological Survey data release, https://doi.org/10.5066/F7H1318R. Bera, M., 2014, Watershed Data Management (WDM) database for Salt Creek streamflow simulation, DuPage County, Illinois, water years 2005–11: U.S. Geological Survey Data Series 870, 18 p., http://dx.doi.org/10.3133/ds870. Murphy, E.A., and Ishii, A.L., 2006, Watershed Data Management (WDM) Database for Salt Creek Streamflow Simulation, DuPage County, Illinois: U.S. Geological Survey Open-File Report 2006-1248, 20 p., http://pubs.usgs.gov/of/2006/1248/. The data sets in this database may be used as input to the Hydrological Simulation Program-FORTRAN (HSPF) model or other similar rainfall-runoff model for simulating streamflow in DuPage County and nearby areas in northeastern Illinois. This database will be available to the public and other cooperators for doing similar simulations or meteorological analyses. 19970101 20220930 publication date Planned Annually -87.8957 -88.1276 42.1567 41.7972 Watershed data management dewpoint temperature air temperature solar radiation wind speed potential evapotranspiration precipitation hydrology stage elevation National Geodetic Vertical Datum of 1929 discharge streamflow runoff flood forecasting dataset number USGS Metadata Identifier USGS:5cd478ace4b062989a9e9500 Illinois Argonne National Laboratory, Illinois DuPage County, Illinois O'Hare International Airport, Illinois St. Charles, Illinois DeKalb, Illinois none Atmosphere none hourly none none Maitreyee Bera Central Midwest Water Science Center Mailing and Physical

405 N. Goodwin Ave

Urbana Illinois 61801-2347 USA 217-328-9749 mbera@usgs.gov Argonne National Laboratory staff who collected the primary meteorologic data; Jennie Atkins, the director of Water and Atmospheric Resource Monitoring (WARM) program of Illinois State Water Survey (ISWS) for providing the data from St. Charles and DeKalb, Illinois; Midwestern Regional Climate Center (MRCC) of ISWS website (http://mrcc.isws.illinois.edu/CLIMATE/index.jsp) for providing dewpoint temperature from gage at O'Hare International Airport, DuPage County stormwater department for the precipitation data in and around DuPage county, Illinois, and USGS Illinois water science center field staff for collecting precipitation, stage and discharge data. No formal attribute accuracy tests were conducted No formal logical accuracy tests were conducted Data set is considered complete for the information presented, as described in the abstract. Users are advised to read the rest of the metadata record carefully for additional details. No formal positional accuracy tests were conducted No formal positional accuracy tests were conducted The watershed data management (WDM) database SC16.WDM is updated with the processed data for the period October 1, 2016, through September 30, 2017, and renamed as SC17.WDM. The precipitation data are collected from a tipping-bucket rain-gage network and the hydrologic data (stage and discharge) are collected at USGS streamflow-gaging stations in and around DuPage County, Illinois. Hourly precipitation and hydrologic data for the period October 1, 2016, through September 30, 2017, are processed following the guidelines described in Bera (2014) and appended to SC16.WDM and renamed as SC17.WDM. Meteorological data (wind speed, solar radiation, air temperature, dewpoint temperature, and potential evapotranspiration) from October 1, 2016, through September 30, 2017, are copied from ARGN17.WDM and appended to SC17.WDM. Data in dataset number (DSN) 107 and 801–810 are used in comparisons of precipitation data. DSN 107 contains hourly precipitation data collected at Argonne National Laboratory at Argonne, Illinois. DSN 801-810 contains the processed Next Generation Weather Radar (NEXRAD)-Multisensor Precipitation Estimates (MPE) data from 10 NEXRAD–MPE subbasins in the Salt Creek watershed as described in Bera and Ortel (2018). Data in these DSNs are not quality-assured and quality-controlled. 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 801-810 are copied from this WDM and stored in SC17.WDM. DSN 107 and 801-810 are updated with the data through September 30, 2017. Data in DSN 5400 (water-surface elevation at the quarry) and 5700 (water surface elevation at Thorndale) are updated through September 30, 2017, similarly (Murphy and Ishii, 2006). Each rain gage station uses one of two different data loggers: the HOBO® or the WaterLOG® H-522+ XL™ Data Collection Platform (DCP). During the period October 1, 2016, through September 30, 2017, the daily total value (in the water year summary for water year 2017) from the rain gage using the HOBO® logger did not match with the sum of the instantaneous values pulled from NWIS-WEB for several days. This is due to multiple tips occurring within the same minute. NWIS-WEB only counts the first tip and ignores any other tips that occur within the same minute. HOBO® loggers only record the time of a tip, and the data is post processed to apply midnight time stamps and backfill 5- or 15- minute instantaneous values into the data log. The multiple tips occurring in the same minute are accurate, thus so is the daily total in the water year summary table. Table 1 shows the list of station(s) using the HOBO® logger that had different daily total rainfall in the Water Data Report than those computed from the data pulled from NWIS-WEB. The days with the difference of 0.03 inches or more are filled with the nearby stations as listed in Table 1. The DCP loggers on the other hand, provide a value or data point every 5- or 15- minutes. The rain gage using a DCP logger does not show any such difference from the instantaneous values pulled from NWIS-WEB. Errors have been found in each of ARGNXX.WDM prior to WY23. XX represents last two digits of a water year (WY). A WY is the 12-month period, October 1 through September 30, in which it ends. SC17.wdm contains erroneous meteorological data and related flag values thereby. SC17.WDM is removed. User is advised to download SC22.WDM from a link at https://doi.org/10.5066/P14D6FRA. SC22.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 (2014). While SC17.WDM is available from the author, all the records in SC17.WDM can be found in SC22.WDM as well. The WDM database SC22.WDM contains sixty-five datasets with a DSN assigned to each in a systematic order. The data organization and sources for precipitation, stage, and discharge are discussed in Bera (2014). The complete list of missing precipitation data periods and the nearby stations used to fill in those missing periods during October 1, 2016, through September 30, 2017, is given in Table 2. The list of snow affected days of precipitation data and the missing and estimated period of the stage and flow data in SC17.WDM database during the period October 1, 2016, through September 30, 2017, are given in the USGS annual Water Data Report at https://waterdata.usgs.gov/nwis. Note: For Stage data series (DSN 4100, 4200, 4500, 4600, 4800, 4801, 4900, 5400, and 5700) missing hourly value is Datum (listed in annual Water Data Report at https://wdr.water.usgs.gov) plus -99.9; For streamflow data series missing hourly value is -99.9; The missing values for the precipitation time series 107 are flagged with -99.0, -99.9, and/or -9990.0. The missing values for the NEXRAD-MPE precipitation time series in DSN 801-810 are flagged with -99.0. The missing period for all other precipitation time series are filled with the nearby raingage data as a part of the quality assurance and quality control process. To open the WDM database SC22.WDM user needs to install Sara Timeseries utility described in the section "Related External Resources". First posted - July 24, 2019 (available from author). 20240507 The precipitation data are collected from a county-wide network of real-time tipping-bucket rain gages maintained by the USGS and DuPage County as described in Bera (2014). The other meteorological data (wind travel, solar radiation, air temperature, and dewpoint temperature) are from the Argonne National Laboratory located in Argonne, Illinois and are described in Bera (2024a). The hydrologic data are from both USGS stage and discharge gages as mentioned in Bera (2014). Discharge values for the missing hours are filled with the value -99.9. Elevation values for the missing hours are filled with the value datum (of the gage) plus -99.9. Point The WDM database SC22.WDM (Bera, 2024b) contains seventy-five datasets with a DSN assigned to each in a systematic order. The datasets with DSN 114, 128, 129, 145, 150, 164, 170, 186, 187, 188, 189, 190, 2100, 2500, 2801, 2900, 4100, 4200, 4500, 4600, 4801, and 4900, respectively are updated with the quality-assured and quality-controlled data from October 1, 2021, through September 30, 2022. The datasets with DSN 207, 307, 310, 407, 410, 507, 510, 607, and 610 are the meteorological data other than precipitation and are copied from ARGN23.WDM. Bera (2024a) describes the processing of these meteorological datasets in ARGN23.WDM. The datasets with DSN 107, 801-810, 5400, and 5700 are copied from the WDM database that is used in near real-time streamflow simulation system and uploaded into SC22.WDM database. Bera (2014) and Murphy and Ishii (2006) describe this WDM database in detail. To open this file user needs to install Sara Timeseries Utility, listed in the section "Related External Resources" in this data release. Table 1 shows the list of station(s) using the HOBO® logger that had different daily total rainfall in the Water Data Report than those computed from the data pulled from NWIS-WEB. The days with the difference of 0.03 inches or more are filled with the nearby stations as listed in Table 1. Table 2 contains the complete list of missing precipitation data periods and the nearby stations used to fill in those missing periods during October 1, 2016, through September 30, 2017. https://doi.org/10.5066/P99Y7W4Q U.S. Geological Survey ScienceBase Central Midwest Water Science Center Mailing and Physical

Denver Federal Center Building 810 Mail Stop 302

Denver Colorado 80225 USA 18882758747 sciencebase@usgs.gov Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it may contain copyrighted materials if noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner whenever applicable. The data have been approved for release and publication by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from authorized or unauthorized use. Although the data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Users of the data are advised to read all metadata and associated documentation thoroughly to understand appropriate use and data limitations. Digital Data https://doi.org/10.5066/P99Y7W4Q NONE To open the WDM file user needs to install any of the utilities listed in the section "Related External Resources" in this Data Release. Tables.docx can be opened by Microsoft Office WORD. CSV files can be opened with Microsoft Excel. The PDF version of Table 1 and Table 2 files can be opened with Adobe Acrobat Reader. 20240916 Maitreyee Bera Central Midwest Water Science Center Physical Scientist Mailing and Physical

405 N. Goodwin Ave

Urbana Illinois 61801-2347 USA 217-328-9749 mbera@usgs.gov Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998