7.6 questions

1. The breakwaters of the Tweed River entrance began to buildup with sand which spilled into the entrance. The short term fix was to extend the breakwater.
2. The longshore drift across the river opening could not have replenished the beaches after severe erosion
3. The longshore drift had caused sand to begin to settle over the river mouth as a sandbar preventing ships entering the river
4. The dredging of the river was one of many short term solution others could have included extending the breakwater again, widening and deepening the opening and building a proper port entrance
5. It takes the sand building up on oneside of the breakwater and pumps it across to the other side so the natural process of longshore drift can continue.
6. The TRESB project allows an almost complete recreation of the natural process of longshore drift which prevents erosion on beaches and the blocking of the river mouth. This to me proves it's success as a strategy
7.

 8. In 1962 Durubah beach the right side of the beach droops into the river opening and shallow water is visible around the opening. In 1969 the beach no longer droops at one end and is wider, the breakwater has cleared the opening and no shallow water is visible in the opening. In 1994 the beach is much wider, the waves are larger. The opening is clear and plants meant to stabilise the sand dunes are visible.
9. The break water was probably 50m in 1962 and 250m in 1994.