SVSim: Sacramento Valley Groundwater-Surface Water Simulation Model

Description

The Department of Water Resources (DWR) has developed a new model, the Sacramento Valley Groundwater-Surface Water Simulation Model (SVSim). This new model will support two important DWR programs and has two main goals: 1) Water Transfer Program - develop a tool that meets essential modeling requirements for evaluating project-specific impacts of groundwater substitution transfers on stream depletion in the Sacramento Valley and: 2) Sustainable Groundwater Management Program - develop a tool for evaluating water budgets, surface water-groundwater interactions, and sustainable groundwater management scenarios in the Sacramento Valley. The intended users of SVSim are DWR, water transfer projects, Groundwater Sustainability Agencies, local agencies, and all other interested parties. SVSim is an application of the Integrated Water Flow Model (IWFM-2015) numerical code and is based on DWR’s C2VSim model (2013). SVSim provides an updated analysis of geologic and hydrogeologic data for the Sacramento Valley and adjacent areas. The model domain includes the Sacramento Valley Groundwater Basin, the Redding Area Groundwater Basin, and the Delta. The southern model boundary lies between the Mokelumne and Calaveras Rivers. SVSim includes nine (9) layers of variable thickness that span the entire groundwater system. The base period of the model simulates conditions from 1973 to 2015. A calibrated version of SVSim Version 1.0 is now available. The model input files, output files/data, and the executable program for SVSim Version 1.0 are available for download below. Version 1.0 supersedes the SVSim Beta Version released in April 2020). Documentation of SVSim model design, input data development, and model calibration and sensitivity analysis is also available.

Resources

Name Format Description Link
57 The Sacramento Valley Groundwater-Surface Water Simulation Model (SVSim) Version 1.0 is a calibrated numerical model that simulates water movement through the land surface and the surface water and groundwater flow systems in California’s Sacramento Valley using the DWR-developed software Integrated Water Flow Model Version 2015 (IWFM-2015). SVSim has a finite element grid with over 23,000 elements. Model input data are spatially and temporally distributed, based on available data. The model elements are grouped into nine (9) water budget subregions for estimating regional water budgets. SVSim contains monthly historical stream inflows, surface water diversions, precipitation, evapotranspiration, and land-use acreages from October 1973 through September 2015. (Data are available for 1922 through 2015 for some input files.) SVSim dynamically calculates crop water demands, allocates contributions from precipitation, soil moisture and surface water diversions, and calculates the groundwater pumping required to meet the remaining demand. It simulates the historical response of the Sacramento Valley’s groundwater and surface water flow system to historical stresses and can also be used to simulate the response to projected stresses. The model has a typical run-time of approximately 3 hours. SVSim model files are provided in a compressed zip format due to the number and size of the files (7 GB uncompressed). The contents of the zip file include the model executables, model input files, and selected outputs from running the model and calculating zbudgets. The input files and parameter files are all in text format. Outputs are in text files and summaries have been developed and are contained in Excel files. For a description of the model files and how to run the model, see SVSim Version 1.0: Roadmap to Running SVSim. LIMITATIONS: This is version 1.0 of SVSim and is subject to change. Users of this version should be aware that this model is undergoing active development and adjustment. Users of this model do so at their own risk subject to the GNU General Public License below. The Department of Water Resources does not guarantee the accuracy, completeness, or timeliness of the information provided. Neither the Department nor any of the information sources used by the Department for model development shall be held responsible for any errors or omissions, for the use, or results obtained from this model. https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/c10bcae7-6681-4a79-a22e-f6b594ebe519/download/svsim-version-1.0-model-files-june-20-2021.zip
33 This resource provides an overview of the process to run the SVSim Version 1.0 model including the preprocessor, simulation, budget, and Zbudget. It also describes the files generated by each module. CONTACT NAME: Chris Bonds CONTACT EMAIL: Chris.Bonds@water.ca.gov https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/b46cd25f-cce7-40cc-ac15-c5b33b54684a/download/svsim-version-1.0-roadmap-to-running-svsim_04-21-22_ada-compliant.pdf
33 svsim_fact-sheet_04-21-22_ada-compliant.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/163e8d23-f1f3-4cbf-807b-462b16f7294c/download/svsim_fact-sheet_04-21-22_ada-compliant.pdf
33 svsim-tm-1a_modeling-approach-for-c2vsim-enhancement_04-08-15_ada-compliant.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/4cf2f79f-3036-4af7-9328-8c5f2feeba7d/download/svsim-tm-1a_modeling-approach-for-c2vsim-enhancement_04-08-15_ada-compliant.pdf
33 svsim-tm-1b_development-of-hydrogeologic-conceptual-model-and-aquifer-parameters_rev07-02-21_ada.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/af64905a-5484-46a6-b906-5ff75ca1d29b/download/svsim-tm-1b_development-of-hydrogeologic-conceptual-model-and-aquifer-parameters_rev07-02-21_ada.pdf
33 svsim-tm-2_model-grid-development_09-26-16_ada-compliant.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/1de1f897-b0ce-470a-9ce3-e9f59b3790be/download/svsim-tm-2_model-grid-development_09-26-16_ada-compliant.pdf
33 svsim-tm-3_input-data-development_05-18-21_ada-compliant.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/f1586978-1d1a-489a-9a2a-f5ebe095b2f6/download/svsim-tm-3_input-data-development_05-18-21_ada-compliant.pdf
33 svsim-tm-5-stream-depletion-calculation.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/8912ae8e-792f-47de-8791-06f55451b03a/download/svsim-tm-5-stream-depletion-calculation.pdf
33 texture2par-user-manual.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/88cbfa06-a2e7-4078-8f76-a1044d32fe70/download/texture2par-user-manual.pdf
8 Data Dictionary for https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/544623e2-0cd5-4c5b-827f-affa4abf4e16/download/svsim_texture_data.csv https://data.ca.gov/datastore/dictionary_download/87b52392-673c-4dfe-a03b-8f128d485b35
57 The beta version of the Sacramento Valley Groundwater-Surface Water Simulation Model (SVSim Beta) is a computer program that simulates water movement through the linked land surface, groundwater, and surface water flow systems in California’s Sacramento Valley using the DWR-developed software, Integrated Water Flow Model Version 2015 (IWFM-2015). DWR is providing SVSim Beta to Groundwater Sustainable Agencies (GSAs) and other related entities as a provisional tool that may be used during development of their Groundwater Sustainability Plans (GSPs). The SVSim Beta model has undergone limited calibration of the land surface budgets and aquifer parameters. A calibrated version of SVSim, including complete documentation, is anticipated in Winter 2020/2021. SVSim Beta has a finite element grid with over 23,000 elements. Model input data have been specified on a per element basis based on available information. The model elements are also grouped into nine (9) water budget subregions for estimating regional water budgets. SVSim Beta contains monthly historical stream inflows, surface water diversions, precipitation, evapotranspiration, and land use acreages from October 1973 through September 2015 (Data is available for 1922 through 2015 for some input files). SVSim Beta dynamically calculates crop water demands, allocates contributions from precipitation, soil moisture and surface water diversions, and calculates the groundwater pumping required to meet the remaining demand. It simulates the historical response of the Sacramento Valley’s groundwater and surface water flow system to historical stresses and can also be used to simulate the response to projected stresses. The model has a typical run-time of approximately 3 hours. The SVSim Beta Model is provided in a compressed zip format due to its size (0.7 GB uncompressed). The contents of the zip file include the model executables, model input files, and selected outputs from running the model and calculating zbudgets. The input files and parameter files are all in text files. Outputs are in text files and summaries have been developed and are contained in excel files. Within the zip file, there are seven (7) folders. The folder titled Bin contains the executables. The folder titled Budget contains a batch file and input file for creating budgets after the simulation has been completed. The folder titled Excel contains excel summaries of outputs of the Budgets and ZBudgets. The folder titled Preprocessor contains the geometry information for the model nodes, elements, streams, and layers. The folder titled Results contains the outputs from the model simulation, budgets, and Zbudgets. The folder titled Simulation contains all the data for initial and boundary conditions as well as aquifer parameters. In addition, Simulation settings and features as well as the batch files for simulating the model are provided here. The folder titled Z-Budget contains the input files and batch files for running the ZBudgets using the model simulation results. CONTACT NAME: Chris Bonds CONTACT EMAIL: Chris.Bonds@water.ca.gov LIMITATIONS: This is a beta version of SVSim and is subject to change. Users of this version should be aware that this model is undergoing active development and adjustment. Users of this model do so at their own risk subject to the GNU General Public License below. The Department of Water Resources does not guarantee the accuracy, completeness, or timeliness of the information provided. Neither the Department nor any of the information sources used by the Department for model development shall be responsible for any errors or omissions, for the use, or results obtained from the use of this model. https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/46293077-f21b-47ab-8ad3-e58574d2aa44/download/svsim_beta.zip
33 This resource provides an overview of the process to run the SVSim model including the preprocessor, simulation, budget and Zbudget. It also describes the files generated by each program. CONTACT NAME: Chris Bonds CONTACT EMAIL: Chris.Bonds@water.ca.gov https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/11790fd5-8690-4c4c-bb8e-f43a18c29589/download/roadmap-to-running-svsim-beta.pdf
57 SVSim model GIS shape files for model grid, stream network and small watersheds, etc. https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/0924454c-b695-4dd7-814d-69147be9488f/download/svsim_gis.zip
33 svsim-tm-4_model-calibration-and-sensitivity-analysis_12-10_21_ada-compliant.pdf https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/ecde4231-e721-468d-8ccf-7919a3cbd1c9/download/svsim-tm-4_model-calibration-and-sensitivity-analysis_12-10_21_ada-compliant.pdf
57 Texture2Par is a software program developed to generate spatially distributed parameter inputs for numerical groundwater flow models by constructing a three-dimensional hydrogeological model of the aquifer system based on sediment texture information. https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/621ad13b-8fa5-411e-8a95-685e20c5d5bf/download/texture2par_dwr_release_20240730.zip
8 SVSim Texture Data - Lithologic well and boring log data Development and use of the SVSim Texture Data is described in the SVSim Technical Memorandum TM-1B: [Development of Hydrogeologic Conceptual Model and Aquifer Parameters](https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/88c46c8e-db7d-40b5-b1ea-73898d7116f8/download/svsim-tm-1b_development-of-hydrogeologic-conceptual-model-and-aquifer-parameters_4-4-18.pdf) See the SVSim Texture Data MS Excel spreadsheet for texture classification tables that specify how the lithologic descriptions from the well and boring logs were classified for the texture analysis, as well as for additional notes on lithologic logging data and data source agencies https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/544623e2-0cd5-4c5b-827f-affa4abf4e16/download/svsim_texture_data.csv
53 SVSim Texture Data - Lithologic well and boring log data Development and use of the SVSim Texture Data is described in the SVSim Technical Memorandum TM-1B: [Development of Hydrogeologic Conceptual Model and Aquifer Parameters](https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/88c46c8e-db7d-40b5-b1ea-73898d7116f8/download/svsim-tm-1b_development-of-hydrogeologic-conceptual-model-and-aquifer-parameters_4-4-18.pdf) Tabs include • SVSim_Texture_Data • Data_Dictionary • Texture_Classifications • Additional_Notes_on_Data https://data.cnra.ca.gov/dataset/5f06b5e9-39c2-411a-a39c-cc0e76e6a35f/resource/3bfdb5dd-7f83-4c98-9ca1-0f3331a5a1fa/download/svsim_texture_data.xlsx

Tags

  • sgma
  • applications
  • streamflow-depletion
  • conjunctive-water-use
  • water-transfers
  • sustainable-groundwater-management-act
  • central-valley-water-resources
  • groundwater-management
  • surface-water-groundwater-interaction
  • california-department-of-water-resources

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