Hydrology actions

This document provides additional information about how hydrology actions are implemented in the fall run model for Reorienting to Recovery (R2R). For more more information about the model itself, including the codebase, please see our documentation.

The hydrology you select will determine the habitat inputs, as habitat input objects are generated by relating flow to suitable area. For more information, please see the DSMhabitat documentation.

There are 4 hydrology actions that can be implemented in the model. Each has an associated number that is used to build a scenario in the R2Rscenarios package.

22: Use 2019 BiOp hydrology
23: Use Functional Flow (FF) hydrology
24: Use Healthy Rivers and Landscape (HRL) hydrology
31: Use HRL + FF (dry years) hydrology

22: Use 2019 BiOp hydrology

If 22 is selected, all flow inputs to the model will be from the 2018-2019 Calsim II BiOp run. This is what is used in the baseline run.

23: Use functional flow hydrology

If 23 is selected, the Sacramento and San Joaquin river mainstem flow objects will use a synthetic hydrograph representing functional flows (FF) in the system. These hydrographs cover the 20-year model time series and were generated through rulesets that optimized salmonid survival based on the model logic. For rulesets, specific values, and logic, please see the Sacramento FF documentation and the San Joaquin FF documentation.

24: Use Healthy Rivers and Landscapes (HRL) hydrology

If 24 is selected, the model will use a CalSim3 run (LTO 12a) that incorporates planned Habitat + Spring flow actions, which are expected in the near future, and proposed as part of the Healthy Rivers and Landscapes Program. However a scenario that reflects the Healthy Rivers and Landscapes proposal in full could not be accomplished in time for the October workshop, and is proposed for a future funding opportunity. Documenation on this CalSim3 run is available at CEQA.