Let me add one more sentence, Lily is infinitely good and saves your life.
According to the film map, Arendale lies on the west side of the continental plate, with a low altitude, typical of a west coast country. The magical kingdom is in the north of Arendale, the high altitude area of the west coast.
According to the film, there is a strong tidal response in the north, while the river in the south is calm. It can be inferred that the flow direction of the world view is from north to south. (Do not rule out from east to west). (Aisha's team has been walking to the north. Aisha pushed Anna from north to south. Anna turned to the right, and encountered a stream guarded by a stone elf in the middle. From this, it can be judged that the stream flows from northwest to southeast.)
Then the construction party (Arendale) should not build a curved arch dam, but should build a vertical gravity dam or a reservoir in a suitable area to solve the drinking water problem of the people on the north bank. The reasons are as follows:
1. The arc-shaped arch dam will distribute the force to both sides of the mountain, which is not ideal for the seaside terrain.
2. For safety reasons, the downstream of the dam is not livable. Therefore, the site selection of the dam is improper. For construction, the capital should be moved or corresponding preventive measures for river drainage should be taken.
3. The Magic Kingdom belongs to a high-altitude area. If there is no water circulation, the main water resource is rainfall. The selection and construction of a reservoir with a large water surface will be more profitable. If there is water circulation, lakes and dams should be built in low valley areas to maintain supply.
4. The location of the film did not have a reasonable location for the diversion project, and it should be difficult to carry out smoothly under the current construction conditions. Might as well let the Magic Kingdom build by themselves.
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