RmaSutra: Model Summary

The starting point for this model is an example SUTRA model named Rocky2D_Irregular.gpt distributed with ModelMuse but whose set up is not described in a tutorial. That model was modified by changing it from steady flow/steady transport to steady flow/transient transport. The maximum time was set to 631152000 with 100 time steps. Eight head observations have been specified. They will be converted to calibration observations. There is also an object named "Flow_Factor" that outlines the nodes that are part of a flow observation. To use PEST with the model we will perform the following tasks.

•Activate PEST.

•Define parameters to use in the model.

•Define parameter groups and assign parameters to them.

•Apply parameters to data sets.

•If desired, define pilot points.

•Apply parameters to boundary conditions.

•Define observations.

•Define observation groups.

•Assign observations to observation groups.

•Define prior information equations for Tikhonov regularization.

•Run PEST.

•Visualize weighted residuals.

•Visualize the modified model input.