If the water table intersect the land surface, groundwater will flow out onto the surface at springs, whether to be collected there or to subsequently flow farther along a drainage.

如果地下水位与地表相交，地下水将在泉水处流出地表，聚集于此或是随后沿着排水系统进一步流动。

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If no drainage system exists, the water table rises, bringing dissolved salts to the surface.

如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。

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This could be seen in the way he treated practical aspects of his work. Providing for adequate drainage and other engineering considerations mattered as much as arranging surface features.

这一点从他对待自己作品的实用角度可以看出。提供足够的排水系统和其他的工程考虑与安排地表特征同等重要。

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The eastbound M27 has been shut between junctions four and five since 21:00 GMT on Saturday while work to improve surface water drainage is carried out.

BBC: M27 closure: Motorway closure continues through weekend

An estimated 100-150 tons of debris was spread across the road and torrential rainfall blocked the drainage system, causing severe flooding on the road surface.

BBC: Scotland