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• geologic, hydrologic, and biologic characteristics of the alluvial valley <br />floor necessary to support the essential hydrologic functions of any <br />alluvial valley floor. Such characteristics which must be evaluated in a <br />complete application, include, but are not limited to: <br />(A) The amount and rate of runoff and a water <br />balance analysis, with respect to rainfall, evapotranspiration, <br />infiltration and ground water recharge; <br />(B) The relief, slope, and density of the <br />network of drainage channels; <br />(C) The infiltration, permeability, porosity, <br />and transmissivity of unconsolidated deposits of the valley floor that <br />either constitute the aquifer associated with the stream or lie between i <br />• the aquifer and the stream; and <br />(D) Other factors that affect the interchange <br />of water between surface and ground water systems, including the depth to <br />ground water, the direction of ground water flow, the extent to which the <br />stream and associated alluvial ground water aquifers provide recharge to, <br />or are recharged by, bedrock aquifers. <br />(ii) Characteristics supporting the function of storing <br />water which include, but are not limited to: <br />(A) Surface roughness, and vegetation of the <br />channel, flood plain, and low terraces that retard the flow of surface <br />waters; <br /> (B) Porosity, permeability, transmissivity, <br />• waterholding capacity, saturated thickness and volume of aquifers <br />associated with streams, including alluvial aquifers, perched aquifers, <br />2.06-29 <br />