Other measures taken to decrease sediment flow include the construction of retaining walls and the reforestation of clear-cut areas.

Investigators will monitor sediment flow, plant growth and the amount of material plants add to the marsh.

From the Yellow River, over 1.6 billion tons of sediment flow each year into the ocean.

The government says two big issues - fish migration and sediment flow - will be addressed.

Materials from the 2004 dredging were deposited on Western Beach in imitation of the natural sediment flow.

The only way to control sediment flow in the reservoir, without removing the dam outright, is by dredging.

The sediment flow into the river is estimated to be 2.4 million tonnes per year.

It gets really complicated after that, when factoring in things like sediment flow and the 300 or so different pollutants in these waters.

Today Mr. Pokrefke and other engineers at the laboratory use elaborate scale models to study sediment flow.

"This whole issue that sediment flow will be changed is false."