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 Basis of the plan |
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A space large enough for the stream was secured not to cause flood relying on the data collected in the past 200 years about local torrential rain. |
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Considering the Cheonggyecheon as being a stream in a city, the height of overhead clearance has
been applied relying on the rate of 1950~1980.
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Design criteria
- Starting point ~ Point of joining the Seongbukcheon(Stream): Local stream Grade-II (Design made relying on the data collected in the past 50 years)
- Point of joining with the Seongbukcheon ~ Point of joining with the Jungnangcheon (Stream): Local stream Grade-I (Design made based on the data collected in the past 80 years)
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| Flood water level |
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| Major measurements of the stream |
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Width: 19~13m |
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Low water channel width: 6~72m |
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Width of terrace spaces on both sides of the stream: 2~27m |
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Height of terrace spaces on both sides of the stream: 3~7m |
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Height of low-water terrace spaces: 1~3.7m |
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| Frequency of inundation |
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In the case of terrace spaces on both sides of the stream: 3 times in a year |
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In the case of low-water terrace spaces: 10 times in a year |
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