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FlowMaster will solve for any unknown variable in gutter cross sections, inlets, weirs, orifices, irregular channels, pressure pipes, or standard open channels. Create multiple design trials, calculate them all simultaneously, and compare the results in customizable tabular reports.

• Model curb, grate, slot, combination, and ditch inlets using calculations based on FHWA Hydraulic Engineering Circular No. 12 and Circular No. 22 methodologies
• Analyze any inlet in sag or on grade with a continuously or a locally depressed gutter
• Calculate water spread and gutter depth for a gutter or pavement section
• Size or evaluate flow for sharp-crested weirs, broad-crested weirs, and orifices
• FlowMaster will solve for any variable, including discharge, headwater elevation, discharge coefficient and more. Even submergence (tailwater effect) in orifices and weirs is taken into account
• Enter the geometry and variable roughness for your irregular sections (open or closed) to model irregular open and closed cross sections effortlessly
• Compute composite roughness values for your irregular section using various methods including Lotter, Horton, Pavlovskii, or the Colebatch and Cox method, as well as the combination of Horton and Lotter that was available in the previous version
• Model ditches and swales regardless of size and shape. Geometric shapes include circular, rectangular, trapezoidal, triangular, gutter, and irregular
• Perform a quick check or a design on a pressure pipe by simply plugging in the known information and clicking to solve for the unknown