Dry well

A dry well or soak is a structure formed underground that disposes of unwanted water, such as surface runoff water and stormwater. In this process, the water is infiltrated into the ground, further merging with groundwater in the local area. The way water flows in a dry well is through gravity. A dry well will typically have a chamber structure, or a deep pit covered with gravel. Dry wells may vary from simple to more advanced structures.