Morphology - FINEL2D animations

Formation of a delta in time

The animation above shows the formation of a delta in time. The river (on the left) is transporting water and sediment into stagnant water (on the right) like a lake or sea. The velocity is high in the river, but when the water reaches the lake the velocity decreases so the sediment will settle. The resulting change in bed level and roughness results in continuous changes in velocity, channels and a progressing delta.