SEAWAT model used to evaluate water management issues in the Santa Barbara and Foothill groundwater basins, California
Dates
Release Date
2018-01-01
Start Date
1972-01-01
End Date
2013-12-31
Publication Date
2023-09-15
Citation
Nishikawa, T., Paulinski, S., Stanko, Z.P., Cromwell, G., and Boyce, S.E., 2018, SEAWAT model used to evaluate water management issues in the Santa Barbara and Foothill groundwater basins, California: U.S. Geological Survey data release, https://doi.org/10.5066/F74J0DF5
Summary
The city of Santa Barbara, in cooperation with the U.S. Geological Survey (USGS) California Water Science Center, developed a three-dimensional density-dependent groundwater-flow and solute-transport model (the Santa Barbara Flow and Transport Model, or SBFTM), based on an existing groundwater-flow model, to simulate seawater intrusion into the Santa Barbara basin under various management strategies. In 2014, California adopted historic legislation to manage its groundwater: the Sustainable Groundwater Management Act (SGMA). Santa Barbara is interested in developing a better understanding of the sustainability of its groundwater supplies to avoid undesirable results: significant and unreasonable groundwater-level declines, reduction [...]
Summary
The city of Santa Barbara, in cooperation with the U.S. Geological Survey (USGS) California Water Science Center, developed a three-dimensional density-dependent groundwater-flow and solute-transport model (the Santa Barbara Flow and Transport Model, or SBFTM), based on an existing groundwater-flow model, to simulate seawater intrusion into the Santa Barbara basin under various management strategies. In 2014, California adopted historic legislation to manage its groundwater: the Sustainable Groundwater Management Act (SGMA). Santa Barbara is interested in developing a better understanding of the sustainability of its groundwater supplies to avoid undesirable results: significant and unreasonable groundwater-level declines, reduction in groundwater storage, seawater intrusion, water-quality degradation, land subsidence, and surface-water depletion. The SBFTM uses the USGS code SEAWAT to simulate salinity transport and variable-density flow. The completed SBFTM was coupled with a management optimization tool, Borg, to develop five optimization scenarios that allow the decision makers to evaluate a range of optimal solutions given current water levels and chloride concentrations, and possible future climatic conditions. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20185059)
This groundwater model was developed as a tool that can further our understanding of the groundwater flow system and be used to forecast groundwater levels and the location of the seawater intrusion front and possible future climatic conditions in the Santa Barbara and Foothill groundwater Basins. The development of the model input and output files included in this data release are documented in U.S. Geological Survey Scientific Investigations Report 2018-5059 (https://doi.org/10.3133/sir20185059).
Preview Image
Image of the model domain and active area of the model.