California Delta Hydrodynamic Model Inputs for 2023

DSM2 FC.2023.01 is a model input release for California's Delta Simulation Model, incorporating 2018 bathymetry and restoration area features. The update includes time series inputs from the 2022 historical release, with modifications to Calaveras River and Yolo Toe Drain inflows. It was produced by the State of California for water management and hydrological simulation.

Use Cases

• Simulate hydrodynamic flows using updated cross-sections and channel lengths from the 2018 bathymetry data.
• Model water quality or particle tracking in restoration areas like Yolo Flyway and Decker Island using the added reservoir and channel connections.
• Analyze boundary inflow impacts by incorporating the new Yolo Toe Drain inflow time series and modified Calaveras River inflow data.
• Calibrate the DSM2 HYDRO model using the layered reservoir input feature added for all reservoirs.

Strengths

• Integrates updated geospatial data, specifically 2018 bathymetry, for improved cross-section and channel length accuracy.
• Expands model scope by adding channels and reservoirs to represent multiple ecological restoration areas.
• Updates time series inputs based on 2022 historical data, with specific adjustments to reflect observed hydrological behavior.

Limitations

• Specific data volume, row counts, and column structure are not documented, limiting pre-download assessment.
• As a model input release, it requires specialized software (DSM2) and domain expertise to utilize effectively.
• The underlying source data and time series may have inherent geographic bias, focusing solely on California's Sacramento-San Joaquin River Delta.

Provenance

Source

State of California, likely the Department of Water Resources (CADWR) Delta Modeling team.

Collection Method

Derived from the DSM2 GIS Reference Project and updates to prior model releases (DSM2 v8.2.2).

Time Range

Primary model update is for 2023; incorporates time series from 2022 and bathymetry from 2018.

Freshness

Model release dated 2023, with platform metadata last updated in 2026.

Geography

Sacramento-San Joaquin River Delta, California, United States, including specific features like Lindsey Slough and Paradise Cut.