California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG)

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.

(Released on June 6, 2025) Version 1.5 of the California Central Valley Groundwater-Surface Water Simulation Model – Fine Grid (C2VSimFG) is a major update to Version 1.01, which was released in April 2021. C2VSimFG is a numerical model developed by the California Department of Water Resources (DWR) to simulate the movement of water through the linked land surface, groundwater, and surface water flow systems of California’s Central Valley. The model is built using DWR’s Integrated Water Flow Model Version 2024 (IWFM-2024.2.1594). Version 1.5 includes updated monthly historical data for stream inflows, surface water diversions, precipitation, evapotranspiration, and land use from October 1973 through September 2021. It dynamically estimates crop water demands and determines how those demands are met through contributions from precipitation, soil moisture, and surface water diversions, calculating the groundwater pumping required to meet any remaining demand. The model simulates the historical response of the Central Valley’s water system to observed stresses and can also be used to evaluate responses to future conditions. DWR makes C2VSimFG Version 1.5 available as an optional tool for Groundwater Sustainable Agencies and other interested parties engaged in developing and implementing Groundwater Sustainability Plans under the Sustainable Groundwater Management Act.