Wikipedia
Pipeflow
In hydrology, pipeflow is the name given to a type of subterranean water flow where water travels along the old root systems of the above vegetation or cracks in the soil.
In such soils which have a high vegetation content water is able to travel along the 'pipes', allowing water to travel faster than throughflow. Here, water can move at speeds between 50 and 500 m/h.
Category:Hydrology Category:Aquatic ecology