Science activity
Science activity #49853, updated 29 April 2022

An Open-Source, Three-Dimensional Unstructured-Grid Model of the Sacramento/San Joaquin Delta: Model Construction and Application to Delta Hydrodynamics and Temperature Variability

Description / purpose

Motivated by the need to predict transport in the Delta, this project will apply the open-source, unstructured-grid computer model, SUNTANS (Stanford Unstructured Nonhydrostatic Terrain following Adaptive Navier Stokes simulator) to the Sacramento/San Joaquin Delta. SUNTANS solves the governing equations of fluid flow on a grid that permits fine detail in areas of particular interest in the Delta, while allowing us to include the entirety of the Bay/Delta system so as to properly model oceanic and estuarine influences on the Delta We have two aims:(1) to carry out the model development needed to apply SUNTANS to the Delta;(2) to apply the model to look at aspects of the physical variability of the Delta that are critical to ecosystem function and to understanding how physical processes in the Delta affect ecosystem function, most notably entrainment of fish and other organisms by the export facilities. In particular, we propose to look at flow behavior at channel junctions, a key aspect of Delta hydrodynamics that influences dispersion in the Delta and thus the transport of biota, nutrients and contaminants. We also will examine the dynamics of spatial and temperature variability in the Delta in response to tides, atmospheric forcing, river flows, and diversions, variability that must be properly calculated to forecast how climate change and altered project operations may affect key species like Delta Smelt. We will carry out new fieldwork to support our modeling.

Linked science activities

None specified

Collaborators

Stephen Monismith, Principal investigator - Stanford University

Activity status

  • Awarded / Initiating (2011)
  • In progress / Ongoing (2011 - 2015)
  • Complete

Funding summary

Total allocated funding: $723,731

Label Value
Contract # or labor code 2042
Implementing organization Stanford University
Funding organization Delta Stewardship Council
Funding Source Delta Stewardship Council - General Fund
Date of award 2011
Date of fiscal year-end Not provided
Total award amount $723,731
State type of obligation Not provided
Federal type of obligation Not provided
Reimbursability Not provided
Procurement mechanism Not provided

Location

Subbasins
Delta regions

Geographic tags

None specified

Products and outputs

Type Title Products Description Impact
Link An Open-Source, Three-Dimensional Unstructured-Grid Model of the Sacramento/San Joaquin Delta: Model Construction and Application to Delta Hydrodynamics and Temperature Variability 0 views

Type and context

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