Phreatic zone

（重定向自Zone of saturation）

Cross-section of a hillslope depicting the vadose zone, capillary fringe, water table, and saturated zone

The phreatic zone, or zone of saturation, is the area in an aquifer, below the water table, in which relatively all pores and fractures are saturated with water.

The phreatic zone defines the lower edge of the vadose zone.

The phreatic zone size, color, and depth may fluctuate with changes of season, and during wet and dry periods.

单词	Zone of saturation
释义	Zone of saturation 英语百科 Phreatic zone （重定向自Zone of saturation） The phreatic zone, or zone of saturation, is the area in an aquifer, below the water table, in which relatively all pores and fractures are saturated with water. The phreatic zone defines the lower edge of the vadose zone. The phreatic zone size, color, and depth may fluctuate with changes of season, and during wet and dry periods.
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