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<br />It is proposed, in the practical application of the rational <br />formula, an included table 2 and 3 would be used to relate <br />existing land use data to CNs. The CNs would then be used <br />to assign appropriate C values from included graphs, or C <br />values may be selected directly from Table 14-1. The <br />appropriate I value from table 4 would be selected. A <br />contributing drainage area would be determined from <br />available maps to complete the data required for solving <br />Q=CIA. <br /> <br />TR-20 peak discharge values wi I I be used in conjunction with <br />HEC-2 Model hydraul ic analyses to develop water surface <br />profiles and flood plain maps included in the Cripple Creek <br />Flood Plain Management Report. <br /> <br />3 <br />