The diagrams illustrate the problem and two possible solutions to a flooding in a specific town in the UK. Looking from an overall perspective, the flooding comes from a river, affecting 3 distinct areas near the river. There are 2 possible solutions displayed, with the first one being the relocation of these areas and the second one being the construction of dams to contain the river.
In the first figure, the river awl is stretched from east to west, while the river bole comes from the north, ending with the intersection to the middle of the river awl. The flooding from the river is reaching more than half a residential area and industrial park that are located on the east and west of the river bole, respectively, and a commercial district to the south of the river bole.
Turning to the solutions, the second figure suggests the relocation of both the residential area and industrial park to the north and the commercial district to the south. While the suggestion can maintain the river environment, it may require higher cost. In comparison, the third figure suggests building 2 dams and 2 reservoirs to contain the flooding near the affected areas, with the first one being in the western side of the river awl and the second one is in the north of the river bole. While the advantage of this suggestion is the lower cost, the disadvantage is that the land will be turned into reservoirs.