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River Bank Erosion: Rip Rap Records

CSEF · 2004 Environmental Engineering

Finn Horve Sukkestad · Pescadero Middle School, Pescadero

Overview

Objectives/Goals The purpose of this project is to find out which rip-rap material is best at preventing water erosion. The three barriers tested were wood rip-rap, rock rip-rap, and a plant rip-rap. Methods/Materials In the experiment, a trench represented the river cavity and sand was embedded into its banks with the help of coffee filters. The barriers were then placed around the mounds of sand and a hose provided the rushing water. In the three trials, measurements of the remaining sand were taken on a small weight scale and then recorded. Results The results indicated more than what was in question. It was discovered that barriers do, in fact, prevent water erosion but, more importantly, that the material used as a barrier is not as important as the way that that barrier is built. Conclusions/Discussion That is, an arch-shaped barrier of wood, rock, or plant will prevent erosion at the same rate.

Summary statement

This project is about the best methods for preventing water erosion on the banks of our Earth.

Help received

JoEy watched while I recorded all measurements to make sure they were accurate; Mamma helped type report ; Pappa showed me how to make the graph results on the computer.

Competition history

  • CSEF 2004 Environmental Engineering · Entry J0828

Resources

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