Identify the best matches below concerning well hydraulics. Question 2 options: Cone of depression Static water level Pumping water level Drawdown 1. Water level in a well when no water is being taken from the groundwater source. It is normally measured as the distance from the ground surface to the water surface. This is an important parameter because it is used to measure changes in the water table. 2. Water level when the pump is operating. When water is pumped out of a well, the water level usually drops below the level in the surrounding aquifer and eventually stabilizes at a lower level. 3. This is the distance the water level drops when pumping begins. 4. In unconfined aquifers, water flows in the aquifer from all directions toward the well during pumping. The free water surface in the aquifer then takes the shape of an inverted cone or curved funnel line. The curve of the line extends from the pumping water level to the static water level at the outside edge of the zone (or radius) of influence