The Visualization Module (Figure 1) of CWMS displays observed data and results of computations. It allows you to monitor and evaluate the current state of the watershed. Spatial data, such as contours or grid cells, and time series data, such as hydrographs, can also be displayed in the Visualization Map Window. As in the Acquisition Map Window, icons in the Map Window can be set up to change color, allowing you to visualize changes in the hydrology as data arrives.