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<br />Chapter 1 - Introduction. Describes the purpose, scope, objective, authority, and contents <br />of the manual. <br /> <br />Chapter 2 - Hvdrolooic Studv Uses. This chapter describes the potential uses of flood <br />hydrology studies. Hydrologic study uses include: flood plain delineations, flood control <br />projects. reservoir and spillway design, local crneria manuals, and flood warning systems. <br /> <br />Chapter 3 - Colorado Flood Characteristics. This chapter addresses the geographical <br />regions within Colorado and describes the criteria in defining the regions. Definitions of <br />Climatic and Hydrologic regions within Colorado including types of flood producing events <br />are presented. Colorado storm characteristics and types of flood producing events <br />including general rainfall, intense thunderstorms, snowmelt, rainfall on snowmelt, and ice <br />affected flood events within the state are discussed. <br /> <br />Chapter 4 - Colorado Flood Historv. This chapter summarizes historical flood events, <br />including the sources of data and procedures for determining the magnitude of <br />documented floods. <br /> <br />Chapter 5 - Hvdrolcoic Policy and Decision Elements. This chapter addresses statewide <br />policy on certain study assumptions and design parameters. Hydrologic policy and <br />decision elements for flood hydrology include: detention effects of non-flood control <br />reservoirs and roadway embankments, effects of irrigation ditches, storm patterns and <br />distribution, skew coefficients. expected probability, and urbanization. <br /> <br />Chapter 6 - General APproaches to Flood Hvdroloov. This chapter summarizes various <br />approaches to flood hydrology. The standard approaches for determining flood hydrology <br />include: flood flow frequency analysis, regional regression equations, and rainfalVrunoff <br />analysis. Non-standard approaches to flood hydrology include: envelope curves, pale-flood <br />hydrology, transfer methods, and interpretation of historic flood events. <br /> <br />Chapter 7 - Methods of Rood Hvdroloov. This chapter details the hydrologic methods <br />summarized in Chapter 6. Descriptions of the background theory, applications, and <br />Iimnations of various elements of flood hydrology are presented. Elements of flood <br />hydrology discussed include: precipitation, infiltration, rational formula, unit hydrographs. <br />kinematic wave routing, channel routing techniques, and discharge frequency analysis. <br /> <br />Chapter 8 - Hvdro/coic Modellino of Basins. This chapter givers examples utilizing basic <br />hydrologic methods commonly used, including model applicability, input parameters, and <br />limitations. <br /> <br />Chapter 9 - Glossarv. This chapter includes a glossary of commonly used hydrologic <br />terms. <br /> <br />Chapter 10 - References, This Chapter lists references sources of information used in the <br />preparation of this manual and sources of information that have more detailed descriptions <br />of methods described in the manual. <br /> <br />Colorado Flood <br />Hydrology Manual <br /> <br />1.3 <br /> <br />fRAFf <br />