What is a sand boil?

A sand boil is specifically characterized as a phenomenon that occurs during the process of groundwater seepage. It is primarily associated with the movement of water through soil layers, where pressure differentials lead to the upward movement of sand and sediment mixed with water. This can create a "boiling" effect at the surface where the water forces its way up, carrying sand particles with it.

In the context of water treatment processes, understanding sand boils is crucial because they can indicate potential weaknesses in water management systems, such as levees or dam structures, where saturated sand layers might be a concern.

This knowledge emphasizes the importance of monitoring and managing subsurface water flow, especially in areas prone to flooding or erosion. Thus, recognizing the mechanics behind sand boils aids in water resource management and preventing structural failures in water facilities.