IGW-Desktop Tutorial 11 - Data-enabled vector based groundwater modeling

This video illustrates the use of IGW-Desktop to create a data-enabled model for the Kalamazoo River watershed in the State of Michigan. This video, although similar to the earlier example, requires the user to specify the datasets to be used to describe the various features of the model. For instance, the user can choose to use DEMs of different resolutions, 90 m, 30 m, 10 m or choose the default DEM based on the model’s grid size. All model attributes can be easily edited or revised at any time by the user. Also, in addition to modeling the land surface as a drain, rivers and streams are explicitly simulated in this model. The model’s performance is evaluated by comparing the model predictions to static water levels from the statewide wells database. The calibration plot shows the overall model fit with a few indicators – mean error, RMSE and the Nash-Sutcliffe model efficiency coefficient. The calibration plot has several interactive features, such as identifying individual points in the chart to know the observed value, the model prediction, and the error at that point. Calibration data points can be selected using various tools available to indicate their spatial location in the model. Such tools can be very useful in identifying if a particular region of the model shows higher error than the rest, which can guide model calibration. More details on IGW: please go to https://www.magnet4water.net/GW_home.aspx - Hydrosimulatics Inc. https://www.magnet4water.net