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Activity (Hands-On)Grades 7 - 9

Exploring Sediment Transport and Bayou Design Solutions

An image illustrating the movement of pollutants (represented by food coloring) as they travel downstream in a bayou. Some pollutants settle along the bayou's banks, while most disperse across the surrounding low-lying land areas.An illustration showing pollutant and sediment transport in a bayou ecosystem.

Students explore the concept of sediment transport and its impact on bayous, which play a vital role in city drainage systems in low-lying areas, such as those found in the southeastern United States. Using the engineering design process, they build bayou models in plastic bins using sand and water, observe how water moves sediment, and investigate the effects of erosion, deposition, and flood risks. To address these challenges, students design and test solutions such as sediment traps and barriers to control sediment buildup and improve water flow.

Civil and water resources engineers focus on designing and managing systems that control water flow and support environmental stability. Civil engineers work on infrastructure such as drainage systems, bridges, and flood control projects, while water resources engineers specialize in understanding how water moves through natural and built environments. They address challenges such as erosion, sediment transport, and flood risks to protect communities and maintain healthy waterways.

After this activity, students should be able to:

  • Understand the concept of sediment transport and its impact on bayous.
  • Learn how urban development affects sediment levels in waterways.
  • Use the engineering design process to create a model of a bayou.
  • Test and evaluate sediment control measures.

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