The Visualization module (Figure 1) of CWMS displays observed data and results of computations. This module 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 Map Window. As in the Acquisition module, time series icons (thumbnail plots) in the Map Window can be set up to change color, allowing you to visualize changes in the hydrology as data arrives. For further details on time series icons and layers, refer to Time Series Icons and Time Series Icons Layers.