Using Figure 12, identify a feature of the East Dart River at 627811 - AQA - GCSE Geography - Question 4 - 2021 - Paper 1

The highlighted grid square 6082 shows varied relief. The highest point is over 590 meters, situated between 590 and 600 meters. In contrast, other areas vary in height: the land is generally below 510 meters in some parts and above 590 meters in others. The slope is significant in this region, with a steep western slope visible. There is also a river valley present in the east, indicating a pronounced change in elevation.

The photographer was facing North East when capturing the image.

As the river flows downstream, the valley may widen due to the continuous erosion of the riverbanks, resulting in a broader floodplain.

An ox-bow lake forms through the process of meandering in a river. As the river bends, erosion occurs on the outer banks while deposition builds up on the inner banks. Over time, if a meander becomes pronounced, the river may cut off the bend, isolating a section of water. This results in the formation of an ox-bow lake, which eventually may fill with sediment and marshland or evolve into a wetland ecosystem.

Flood management strategies, such as the construction of levees or flood walls, can significantly impact both people and the environment. For instance, while these structures provide immediate safety and protection for communities, they can also lead to unintended ecological consequences, such as habitat loss for aquatic species. Additionally, the rerouting of water flow may increase flood risks in other areas, endangering nearby communities. An example is the implementation of levees in urban areas, which can create a false sense of security, leading to increased development in flood-prone regions.