Manual Calibration

Manual calibration is an iterative process that improves with experience and is a very important step in modelling. However, it can be cumbersome. One needs to run the model, extract and evaluate results by plotting and calculating indices, and then go to change parameter and repeat the process untill results are satisfactory.

SWAT+ Toolbox streamlines this process by automating some of the most cumbersome parts.

1. Setting Parameter Values

Use the parameter table on the left to select and change click on the value column of the parameter row to type in your desired value. Sometimes, you may want to disable a parameter to compare the 'with' and 'without' results for that parameter. you can achieve this by checking and unckecking the checkbox for that parameter in the first column of the parameter table.

2. Running with New Parameters

After making parameter adjustments, click 'Run SWAT+' to apply the parameters and run SWAT+. Monitor the model run progress in the global progress bar at the bottom.

3. Evaluating Model Performance

Click on the ‘refresh performance’ button to calculate new performance indices. In the case that you have more than one observation, you can go to the graphical evaluation of each observation by clicking on it in the ‘performance index panel’.

Remember to do a model check once you get satisfactory results to see your model's potential issues.