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<br />23 <br /> <br />. <br /> <br />individuals are known to the writer. Gary L. Lewis (5) developed a <br /> <br />program based on the method of Bakhmeteff (1). The program computes <br /> <br />water surface profiles for depths other than normal depth in channels <br /> <br />of three specified prismatic shapes. The program is very compact with <br /> <br />direct and readable formats for input and output. <br /> <br />A program based on the method of F. F. Escoffier (4) was written <br /> <br />by James H. Duke, Jr. (3). The program is applicable to channels <br /> <br />of variable cross-section. Adaptability of the program to flows near <br /> <br />the critical range has not been established to date. Data entry for <br />this program is reasonably straightforward. autput is in the form of <br /> <br />values for F' and Fit, which represent energy levels at adjacent <br /> <br />stations, from which curves can be drawn. Use of the output requires <br /> <br />drawing curves to represent the two values. Determination of the <br /> <br />water surface elevations is then based on a graphical solution which <br /> <br />utilizes the curves of F' and Fit . <br /> <br />All the programs reviewed basically require data entry for <br /> <br />longitudinal stationing, cross-sectional stationing, roughness and <br /> <br />initial discharge conditions. All programs are also adaptable to the <br /> <br />metric system. Comments regarding their usage in particular situations <br /> <br />follow. <br /> <br />. <br /> <br />.' <br /> <br />~ <br /> <br />. <br /> <br />Evaluation of Existing Programs <br /> <br />Development of the programs reviewed herein has been in response <br /> <br />to the needs of individual or agency requirements, constrained by the <br /> <br />type of equipment available. This review will briefly cover ranges of <br />application for each of the programs mentioned. <br />