4.3 Calibration Criteria
Calibration Criteria used the same method as flow calibration that evaluate model result in term of Assessment of preservation of mass (Volume Ratio) and Assessment of preservation of monthly flow peaks (Coefficient of Efficiency, Nash-Sutcliffe).
The purpose for SWAT Sediment and Nutrient simulation is to estimate sediment load and nutrient load from tributary then provide result to IQQM/Source model for basin simulation (include HP dam operation and irrigation), then the result will be for ISIS model simulation on Mekong Mainstream from Chiang Saen – Kratie.
Assessment of preservation of mass (Volume Ratio)
To ensure that the model is robust through the calibration and during wet and dry season the mass preservation criteria then the Volume criteria that use for Mainstream and Tributary is within 20%