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<br />.1 <br /> <br />. \ <br /> <br />Chapter III - Local Flood Warning Syst"", <br /> <br />A. Introduction <br /> <br />d local flood warning system consists of four steps leading up to the <br /> <br />determination that an imminent flood threat exists, and the dissemination of <br /> <br />this information to local officials. The local flood warning system can be <br /> <br />classified into the following four steps: <br /> <br />1. Collect Data <br /> <br />2. Transmit Data <br /> <br />3. Forecast the Flood <br />4. Inform Local Officials <br /> <br />Each step is critical in the process of recognizing that a flood threat exists <br /> <br />and in determining the magnitude of flooding. This chapter discusses these <br /> <br />steps in relation to the basic types of local flood warning systems now in <br /> <br />use. <br /> <br />B. Types of Local Flood Warning Systems <br />There are two basic classifications of local flood warning systems available <br /> <br />for cOll\1ll.1nity use: manual systems, which are relatively simple and <br /> <br />inexpensive, and automated systems, which use state-of-the-art automated data <br /> <br />collection and warning transmission systems and computers to provide flood <br /> <br />forecasts. There are many variations within these two basic types. <br /> <br />The basic concept of a local flood warning system is simple. River and <br /> <br />25 <br />