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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />SECTION <br /> <br />III. <br /> <br />I. <br /> <br />II, <br /> <br />IV, <br /> <br />V, <br /> <br />VI. <br /> <br />TABLE OF CONTENTS <br /> <br />LIST OF TABLES <br /> <br />Flood Plain and Floodway Reference Data <br /> <br />Page <br /> <br />Sample Flood Hydrographs <br /> <br />ABSTRACT , . <br /> <br />1 <br /> <br />Peak Flow Profiles <br /> <br />INTRODUCTION <br /> <br />1-2 <br /> <br />Flood Hazard Area Delineation Drawings, Sheets 1 through 6 <br /> <br />A. Scope of Work <br /> <br />1 <br /> <br />TABLE 1 <br /> <br />DESIGN 100-YEAR RAINFALL PATTERN, , , . , , , <br /> <br />B, Coordination <br /> <br />2 <br /> <br />TABLE 2 <br /> <br />WATERSHED AND HYDROGRAPH PAR1\METERS AND CALCULATED PEAK <br />FLOW RATES , , , <br /> <br />C, Methodology <br /> <br />2 <br /> <br />DRAINAGE BASIN CHARACTERISTICS <br /> <br />TABLE 2A- PEAK FLOW RATES <br /> <br />2-3 <br /> <br />A, General <br /> <br />2 <br /> <br />APPENDIX <br /> <br />B, Spring Gulch <br /> <br />2 <br /> <br />TABLE 3 - FLOOD PLAIN AND FLOODWAY REFERENCE DATA (without <br />tentative culvert-type road crossings) ..... <br /> <br />C, Climatology and Flood History <br /> <br />3 <br /> <br />HYDROLOGIC ANALYSIS <br /> <br />TABLE 3 - FLOOD PLAIN AND FLOODWAY REFERENCE DATA (backwater <br />at tentative culvert-type road crossings) , , , , , <br /> <br />3-5 <br /> <br />A. Description & Application of CUHP <br /> <br />3 <br /> <br />B, Description & Application of SWMM <br /> <br />LIST OF FIGURES <br /> <br />4 <br /> <br />HYDRAULIC ANALYSIS , . , . , , <br /> <br />FIGURE 1 <br /> <br />SLOPE CORRECTION FOR NATURAL DRAINAGEWAYS <br /> <br />6 <br /> <br />FLOOD HAZARD AREA DELINEATION <br /> <br />FI GURE 2 <br /> <br />RELATIONSHIP BETWEEN HOUSINC DENSITY AND % IMPERVIOUS <br /> <br />6-8 <br /> <br />A, Flood Frequency and Discharge <br /> <br />FI GURE 3 - FLOOD HYDROGRAPHS (at SWMM segment Nos. 216 & 21/.) <br />FI GURE 4 FLOOD HYDROGRAPIIS (at SWMM segment Nos, 213 & 212) <br />FIGURE 5 FLOOD HYDROGRAPIIS (at SWMM segment Nos, 210 & 208) <br />FIGURE 6 FLOOD HYDROGRAPHS (at SWMM segment Nos, 207 & 204) <br />FIGURE 7 PEAK FLOW PROFILE (Reach 1 [rom station 1+00 to 126+40) <br /> <br />6 <br /> <br />B. Flood Plain & Floodway Data <br /> <br />7 <br /> <br />C, Flood Velocities and Erosion Potential <br /> <br />8 <br /> <br />REFERENCES , . . . . <br /> <br />8 <br /> <br />4 <br /> <br />5 <br /> <br />5 <br /> <br />1-3 <br /> <br />3 <br /> <br />I, <br /> <br />5 <br /> <br />6 <br /> <br />7 <br /> <br />8 <br /> <br />9 <br /> <br />10 <br /> <br />i <br />