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<br />INTERPRETATION OF DATA <br /> <br />Flooded area maps, profiles, and selected cross <br /> <br /> <br />sections are provided in the report to define the limits of flooding <br /> <br /> <br />that would occur during an Intermediate Regional Flood or Standard <br /> <br /> <br />Project Flood. Hypothetical examples of these presentations, <br /> <br /> <br />depicting the areal limits and elevations of the respective future <br /> <br /> <br />floods at an imaginary location, are shown on the following page. <br /> <br /> <br />The lateral limits of flooding from the Intermediate <br /> <br /> <br />Regional Flood (IRF) are shown by the blue-shaded area; crossing this <br /> <br />area, the wavy IRF elevation lines represent water surface contours <br /> <br /> <br />at 5-foot intervals; and the solid blue area indicates the additional <br /> <br /> <br />area that would be inundated by the Standard Project Flood (SPF). <br /> <br /> <br />The flood profile shows the relative depth of floodwaters along the <br /> <br /> <br />centerline of the stream. The cross section example indicates the <br /> <br /> <br />depth and lateral extent of flooding that would occur at the speci- <br /> <br /> <br />fied cross section; other information on floodflow depths at the <br /> <br /> <br />location of the cross section is tabulated below. Similar data can <br /> <br /> <br />be developed for any flood plain location in the study reach con- <br /> <br /> <br />sidered in this report. <br /> <br />- <br /> <br />Distance from Depth of Floodwater 1 <br />Stream Centerline IRF SPF <br />feet feet feet <br />50 3.4 5.1 <br />150 1.7 3.5 <br />250 1.0 <br /> <br />Location <br /> <br />Point A <br /> <br />Point B <br /> <br />Point C <br /> <br />By using information as illustrated above, together <br /> <br /> <br />with other data such as frequency of occurrence, velocity of flow, and <br /> <br /> <br />duration of flooding, concerned individuals can make knowledgeable <br /> <br /> <br />decisions relative to the use, development, and management of areas <br /> <br /> <br />subject to inundation, <br /> <br />App. 4 <br />22 <br />