Wesley Henson Joseph A. Hevesi Elizabeth R. Jachens 20250408 tabular digital data https://doi.org/10.5066/P9HAG7ZI This dataset provides time series for the ungaged watershed inflows and associated inflow points for the Lower Salinas Valley Hydrologic Models (SVHM), including the Salinas Valley Integrated Hydrologic Model (SVIHM) and the Salinas Valley Operational Model (SVOM). Monthly outflows from watersheds that do not have gages that surround the Salinas River Valley are used in the Lower Salinas Valley Hydrologic models are provided by the Salinas Valley Watershed Model (SVWM) (Hevesi and others, 2025) for the period from October 1, 1967 to September 30, 2018. The streams and tributaries that are not gaged and that are outside the active area simulated in the Lower Salinas Valley Hydrologic Models are provided as basin-wide estimates. The catchments are described as part of the surface water dataset (Henson and others, 2022). The surface inflows provided by the watershed inflows are used as part of the boundary conditions applied at model cells at the interface between outside of the model domain and within the active model domain. This data release contains a time series of input inflows for the 180 ungaged watersheds. These data were used as input files for the Lower Salinas Valley Hydrologic Models (the Salinas Valley Integrated Hydrologic Model (SVIHM) and the Salinas Valley Operational Model (SVOM). 19671001 20181031 ground condition Complete None planned -122.0037 -120.5585 36.9865 35.6076 ISO 19115 Topic Category inlandWaters USGS Thesaurus streamflow watershed management surface water (non-marine) runoff USGS Metadata Identifier USGS:636ab71cd34ed907bf6a6bd1 Common Geographic Areas California Salinas Valley 180-Foot Aquifer 400-Foot Aquifer None. Please see 'Distribution Info' for details. It is requested that the suggested citation for this USGS data release be included in any publications that reference or utilize these data. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. Wesley Henson U.S. Geological Survey, SOUTHWEST REGION Hydrologist mailing address

4165 Spruance Road

San Diego CA 92101-0821 US 619-225-6170 619-225-6101 whenson@usgs.gov ArcGIS ArcMap 10.8.1 No formal tests were conducted No formal logical accuracy tests were conducted. Data were reviewed for consistency. 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. W.R. Henson J.A. Hevesi R.T. Hanson D. Bittner D.M. Herbert E.R. Jachens 20221101 tabular digital data U.S. Geological Survey data release https://doi.org/10.5066/P93COXL6 Digital and/or Hardcopy 19471001 20180930 ground condition Henson and others, 2022 Salinas Valley Hydrologic Models stream segments for the surface water data Joseph A. Hevesi Wesley Henson Randy T. Hanson Marisa M. Earll Deidre M. Herbert Elizabeth R. Jachens 20250408 tabular digital data U.S. Geological Survey model data release https://doi.org/10.5066/P9FJAWC4 Digital and/or Hardcopy 19481001 20220930 ground condition Hevesi and others, 2025 the Salinas Valley Watershed Model provides estimates for watershed inflow to the Lower Salinas Valley Hydrologic Models Watershed inflows are provided by the Salinas Valley Watershed Model (SVWM) as model outputs (Hevesi and others, 2025) for the watersheds surrounding the Salinas Valley (Henson and others, 2022). Watershed inflow values are basin-wide estimated and presented as daily averaged values in units of cubic feet per day (ft3/day). For use in the Lower Salinas Valley Hydrologic Models, the daily inflows are averaged for each month for water years 1967-2018, resulting in monthly averaged daily flow volumes with the units of cubic feet per day (ft3/day). Hevesi and others, 2025 Henson and others, 2022 2022 SVHM_Inflow_Timeseries.zip Each file is a time series files for one the ungaged watershed input inflows. Each file is named using the corresponding inflow catchment. Each file is a space delimited text file, with the extension .txt, and contains three columns of data. There are no column headers or column labels in these text files. Producer Defined No column label exists The first column is the date with the format of decimal years (i.e. October 1, 1976 is given as 1967.75932). Producer Defined 1967.74932 2018.66712 No column label exists The second column is the average monthly value input inflow in units of cubic feet per day (ft3/day). Producer Defined 0 131861.309601398 No column label exists The third column is a comment, not a functional part of the code, and provides the corresponding date from the first column in the format M/D/YYYY, where M is the month code as either one or two digits without leading zeros (i.e. 1 is January and 12 is December), D is the day code as either one or two digits (1-31), and YYYY is the four digit year code. There is a pound sign, #, before the date. Producer Defined 10/1/1967 9/1/2018 There are a total of 180 time series files for the ungaged watershed input inflows. Each file is named using the corresponding inflow catchment, more information on the catchments can be found in the documentation for Henson and others (2022) including a shapefile of the inflow catchments. Each file is a space delimited text file, with the extension .txt, and contains three columns of data separated by a space. There are no column headers or column labels in these text files, this is because the data files are raw model files. Please refer to the Entity and Attribute detailed section for more information on what data in each column represents Henson, W.R., Hevesi, J.A., Hanson, R.T., Bittner, D., Herbert, D.M., and Jachens, E.R., 2022, Salinas Valley Hydrologic Models: Surface Water Data (ver. 1.1, September 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P93COXL6. GS ScienceBase U.S. Geological Survey mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty. Digital Data https://doi.org/10.5066/P9HAG7ZI None 20250408 Elizabeth R. Jachens U.S. Geological Survey, SOUTHWEST REGION Hydrologist mailing address

4165 Spruance Road

San Diego CA 92101-0821 US 619-225-6144 ejachens@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998