What term describes the distance from the well to the edge of the cone of depression?

The term that refers to the distance from the well to the edge of the cone of depression is known as the radius of influence. This concept is critical in hydrogeology and groundwater management, as it helps to define the area around a well where the groundwater level is affected by the pumping of that well. The cone of depression forms as water is drawn down from the aquifer due to extraction, and its shape can vary based on the pumping rate, aquifer properties, and surrounding conditions.

In practical terms, understanding the radius of influence is vital for ensuring that other nearby wells and water sources are not adversely impacted by excessive groundwater extraction. It helps in managing the sustainability of water resources by guiding decisions on well placement, aquifer recharge, and water use regulations. Therefore, recognizing the radius of influence is essential for water conservation and management within a given area.