The study looked at how a floodplain near Lake Tana in Ethiopia affects the water flow into the lake. By measuring water levels at different points, researchers found that the floodplain stores a lot of water during the rainy season and releases it later. The type of land and rocks in the area also affect how much water flows through. The floodplain helps reduce the size of floods downstream, but only one of the rivers studied gets a significant amount of water from the floodplain. Overall, the floodplain plays a big role in managing water in the area.