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Water Surface Profiles in Compound Channels: Critical Depths Analysis

This study examines water surface profiles in compound channels with varying bottom slopes using Manning's n values. The discharge is 2.5 m³/s, n values are 0.013 and 0.0144 for the main channel and floodplain. Discusses critical depths and provides sketches for different channel bottom slopes.

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Water Surface Profiles in Compound Channels: Critical Depths Analysis

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  1. Profiles in Compound Channels • A long channel has a compound cross section and a free over fall at the downstream end. The channel discharge is 2.5 m3/s, and the Manning n for the main channel and for the floodplain are 0.013 and 0.0144 respectively. Discuss and sketch the water surface profile for the following four channel bottom slopes, There are three critical depths: (Choudhry, 2008)

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