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<br />LIST OF ABBREVIATIONS AND SYMBOLS <br /> <br />A = parame ter <br />a = constant; parameter <br />AMC antecedent soil moisture condition <br />B total or partial area of the test bed under rainfall projected on the horizon- <br /> tal plane <br />b constant <br />C = constant <br />CN runoff curve number <br />D = soil moisture diffusivity <br />D maximum effective diffusivity <br />max <br />D(O) soil moisture diffusivity as a function of soil moisture content <br />F cumulative infiltration <br />f infiltration rate or infiltration capaCity <br />f(t) = inmtration rate or infiltration capacity as a function of time <br />f., = final infiltration rate <br />A <br />f., least squares estimate of final inmtratlon rate <br />h = ponding depth of water on the soil surface or average depth of surface <br /> detention <br />h(t) = ponding depth of water on the soil surface as a function of time <br />Ia initial abstraction <br />k = parameter <br />Ko = initial hydraulic conductivity <br />Kg saturated hydraulic conductivity <br />K(O) = hydraulic conductivity as a function of soil moisture content <br />Kj+l/2 = hydraulic conductivity at a point halfway between grid points i and i + I <br /> at time level j <br />L = distance below the soil surface, defined by Equation 37 <br /> <br />xv <br />