Gridded data can be viewed in the Visualization Map Window to examine individual gage reports, identify problems, and confirm the validity of the data. The Visualization module also allows gridded data to be viewed as grids, which gives a view of the precipitation over the whole watershed for a specified duration.

Figure 1 Precipitation Grids

Precipitation grids are created by interpolating between gages or by loading radar precipitation datasets from the National Weather Service or other external sources. Individual precipitation grids are grouped into sequences called grid sets as outlined in the Spatial Data Visualization section. To view grid sets in CWMS, you will use the grid animation controls in the Visualization Module.