3. Erosion and Deposition Analysis Erosion Common erosion places would be anywhere the ground is moist. We noticed that places at the top of a hill were mostly eroded. As you would go down the hill, there would be places of erosion. The cement was eroded at the top. Most of the things eroded wasn’t on flat land. Deposition We noticed deposition on flat land. We saw deposits of rocks, sediments, and leaves inside little holes. Most of the eroded material from the hilly land is deposited on the flat land like in these holes. The ground was usually dry in these areas.