SWAT-CUP-2019 is a Calibration Uncertainty Program for SWAT. It can also be used to perform validation and sensitivity analysis.

SWATCUP-2019 is a program for the calibration of SWAT models. The program performs calibration, validation, sensitivity analysis (one-at-a-time and global), and uncertainty analysis. In addition, the program links SUFI2, GLUE, ParaSol, MCMC, and PSO algorithms to SWAT. 11 model performance criteria (e.g., R2, NS, Pbias) can be used as objective functions to calibrate and validate SWAT models. The program has a graphical module to show simulation results, dotty plots to visualize parameter sensitivity, 95% prediction uncertainty (95PPU), p-factor and r-factor to quantify the uncertainty, sensitivity graphs, and watershed visualization using Bing Map statistical reports. The following articles can be consulted for more detail: https://www.sciencedirect.com/science/article/pii/S0022169415001985 https://www.mdpi.com/2073-4441/10/1/6 https://www.sciencedirect.com/science/article/abs/pii/S0022169406004835 A Parallel Processing module can be used to speed up the calibration process with SPE. Please see details of Parallel Processing here: https://www.sciencedirect.com/science/article/abs/pii/S1364815211002829 Several Youtube videos explain different aspects of the program in detail: https://www.youtube.com/channel/UC5-E8iV-EhWvKusyeC3Jctw