| environ. |
drainage water Incidental surface waters from diverse sources such as rainfall, snow melt or permafrost melt; drainage layer; catchment; drainage water; runoff; drainage 1. Removal of groundwater or surface water, or of water from structures, by gravity or pumping. 2. The discharge of water from a soil by percolation (the process by which surface water moves downwards through cracks, joints and pores in soil and rocks); runoff Rate at which water is removed by flowing over the soil surface. This rate is determined by the texture of the soil, slope, climate, and land use cover (e.g. paved surface, grass, forest, bare soil) |
