Figure 2, Figure 3 and Figure 4 illustrates the interaction between the processes simulated by the Natural System Model (NSM) and the South Florida Water Management Model (SFWMM). Rainfall and overland flow add to the surface water volume of a cell. Evapotranspiration, infiltration and overland flow decrease the volume of water from ponding. Below the ground surface there can be groundwater. Groundwater flow from adjacent cells can increase or decrease the volume of groundwater. Infiltration (percolation) from moisture above the groundwater level increases its volume. In the Everglades Agricultural Areas, there is a differentiation be evapotranspiration from the unsaturated and saturated ground zones.
Figure 2. 3-D model of general hydrologic processes simulated by the Natural System Model
Figure 3. Relationships between unsaturated soil, saturated soil and ponding as infiltration decreases the unsaturated soil area.
Figure 4. General hydrologic processes simulated for the Everglades Agricultural Area simulated by SFWMM
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