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<br />tit <br /> <br />0.4 feet per foot, and the initial and final saturation contents were 0.9 and 1.0, respectively. <br />The hydraulic conductivity of the soil was assumed to be 0.3 inches per hour and the <br />capillary suction was 4.8 inches. This would assume that the soil was a loam. <br /> <br />RESULTS <br /> <br />Flow throuah City <br /> <br />The output from the model is the maximum depth of flow at each node. Figure 1 shows a <br />contour map of the maximum depth of flow through the City of Aspen assuming that the <br />water contains no sediment (Cv=O.O). Figure 2 provides the maximum depth of flow <br />assuming that the peak sediment concentration is 45% (a mudflow event). By comparing <br />the two drawings, it is apparent that sediment has a great effect on the depth of flow and <br />ultimately the design of any mitigation alternatives. <br /> <br />tit It is important to note that the FLO-2D model does not include the effect of buildings and <br />streets. It was modeled as if there were no obstructions to the flow. If buildings were coded <br />into the model (as will be done in the future), the depth of flow through the City should <br />increase significantly. <br /> <br />Effect of New Development <br /> <br />To estimate the effect that new developments may have on flow adjacent to and through <br />the development, a hypothetical development was analyzed. The hypothetical <br />development, which is located at the south end of Mill Street, was then coded into the <br />model. <br /> <br />e <br /> <br />FLO-2D allows the flow area through designated nodes to be reduced. It was assumed that <br />the width of the lots in the hypothetical development is approximately 100 feet and the <br />width of the houses is about 80 feet in the direction of flow. Based on these values, the <br />width available to pass flow through the nodes associated with this proposed development <br />