Legend to Figure 14. continued. hD = thickness of monitored portion of ground- water (maximum 8 ft), ft hD = hG + D, elevation of water table, ft h' = depth of surface water at local deepest point, ft hW = 0.25h' I = rainfall, ft/mo K = hydraulic conductivity (permeability coefficient) N = length of all natural flow-ways Pe = potential evapotranspiration P = width of overland flow, perimeter of sloughs, ponds, and ditches RD = rainfall on dry land R DW = rainfall excess on dry land (shunted to wetland) Rw = rainfall on wetland S = seasonality factor for plant transpir- ation (with and without leaves) T = transmissivity coefficient VD = ground and soil water volume, acre ft VW = surface water volume, acre ft VDax = saturation volume of soil and surface water, acre ft VDme = moisture equivalent (field capacity) volume of soil, acre ft Vmax = surface water volume to lowest lip, acres 9 = elevation gradient from border to in- land areas