A river delta is formed by sediment or material carried by the river that accumulates at one area. The river also forces the sediment to remain and become compact there. At the delta, this is considered to be the beginning or end of the river. This is where the river dumps into a larger water body, usually an ocean.
River deltas come in different sizes depending on the force of the river and the size of the river. There are different types of deltas. Wave-dominated deltas are created by the ocean waves forcing the sediment to become packed along the river’s opening. Tide-dominated deltas are established due to erosion. Gilbert deltas are created by rougher material collecting near the opening of a river.
