By studying the different mechanisms of sediment movement, solutions were developed to reduce sedimentation in harbours, and thus reduce the need for maintenance dredging.
The Miami River corridor was home to early Native American settlements, and in the early 1900s it was dredged in order to assist in draining the Everglades, the subtropical marshland in southern Florida. As the city of Miami developed, the river became a major outlet for storm water and untreated sewage. In 1990 the USACE recommended that maintenance dredging be done to remove sediments impacting navigation.
As part of an intensive reasearch project to evaluate the ecological impact of dredging and relocation of material, two differnet techniques were compared.
An innovative system of collecting tolls has financed the privatisation of maintenance dredging on the River Plate and in the harbour of Buenos Aires.