Fl eng 21b 2025

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The document is a worksheet from the U.S. Department of Agriculture's Natural Resources Conservation Service, specifically designed for calculating the Time of Concentration (Tc) or Travel Time (Tt) for various flow types in a project area. It includes sections for inputting data related to sheet flow, shallow concentrated flow, and channel flow, along with formulas for computing travel times based on surface descriptions, flow lengths, rainfall data, and other hydrological parameters.

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