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Chapter 1:Introduction <br /> Effective Wind Speed for the Island of Hawaii <br /> (For Components and Cladding with Mean Roof Height not geater than 100ft) <br /> District Boundary Land use CONTOUR <br /> Major Road Agriculture ------ 90 <br /> Conservation 100 <br /> .J <br /> Rural .......... 110 <br /> •., .' ��\ ��-•:-•~~��� Urban 120 <br /> -- -130 <br /> 140 <br /> 150 <br /> 160 <br /> _.. — 170 <br /> 180 <br /> I I r <br /> I i <br /> �+$ N <br /> I ✓f <br /> 0 5 10 20 Miles <br /> I I i I 1 I I I I <br /> Figure 1-2. Wind contour map for the Island of Hawaii.The complex topography of the island creates acceleration <br /> and decelerations of a 105 mph basic design event windspeed as shown. <br /> As the geologically youngest island, Hawaii Island's landforms have not been weathered to <br /> the extent of the other islands. Thus rainfall runoff flows in narrow V-shaped stream valleys <br /> without broad floodplains or sheetflows in relatively undefined drainageways especially in <br /> the drier leeward areas. The relatively immature reef development and related lack of white <br /> sandy beaches is also characteristic of the youthful geologic age of this island. <br /> 1-9 Hawaii County Multi-Hazard Mitigation Plan <br />