1. The result is that most dams are nearly 100 % efficient sediment traps . 2. Seasonality and fluxes are studied through sediment trap  studies, which help to understand ecological signals. 3. On smaller construction sites, where a basin is not practical, sediment traps  may be used. 4. Because it is located in the Tippecanoe River drainage basin, it is a natural sediment trap . 5. Sediment traps  are commonly used on small construction sites, where a sediment basin is not practical.6. Sediment traps  are installed before land disturbance ( earth moving, grading ) begins on a construction site.7. They have also installed many sediment traps , excavated sections of ditches that can be cleaned out after storms. 8. Rubbish, oil and sediment traps  have been set up at the incoming openings to the lake to minimise pollution. 9. As most other lakes of southern Chile, Puyehue Lake acts as a sediment trap  for material from the Andes. 10. Multari said, " building sediment traps  in watershed so we can stop it before it gets to the bay ."