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<br />0)1333 <br /> <br />5 <br /> <br />program that is legal, equitable, and most importantly, implementable <br />within the resource and sociopolitical constraints of small to medium <br />sized communities. <br />Definitions <br />In order to clarify many points in this paper, the following <br />definitions and explanations are presented: <br />1) Drainage basin/subbasin - A community can be divided into major <br />drainage basins ranging from 10 to 100 square miles. These major basins <br />are composed of individual drainage subbasins ranging from 1 to 5 square <br />miles as illustrated in Figure 1-1. The writers feel this division <br />creates logical drainage units for planning and management at the local <br />level. The division separates the overall basin planning process from <br />the detailed subbasin planning process, yet provides for coordination <br />between these planning efforts. The major basins are studied to plan <br />central drainage and flood control facilities, such as major channels <br />and retention ponds. The individual subbasins are then studied to plan <br />the trunk drainage facilities (minimum size of 36" to 54" pipe or <br />channel equivalent) from the major channel to the upper reaches of the <br />subbasin. Each property within the community is overlain by at least <br />one basin and one subbasin and subject to the requirements of each. <br />2) Drainage and flood control - Control of surface and subsurface <br />stormwater runoff. In thi s paper, the writers wi 11 use "dra i nage" or <br />"flood control" alone to mean the same thing. The writers are not <br />referring to drainage of marshy lands for reclamation purposes, nor to <br />the hydraulic flow processes per se. <br />