For effective drainage therefore, the entire site should be located above flood level at a minimum of 3 m above the water table, preferably on a gently sloping area.
因此需要注意，为了保证有效的排水，整个地点应当高过洪水水位、高于地下水位至少3米，最好是在地势略微倾斜的地区。
For effective drainage therefore, the entire site should be located above flood level at a minimum of 3 m above the water table, preferably on a gently sloping area.
因此需要注意，为了保证有效的排水，整个地点应当高过洪水水位、高于地下水位至少3米，最好是在地势略微倾斜的地区。
应用推荐