2. If an aquifer near the floodplain in the eastern part of Figure 12.3 is 30 feet thick and has a porosity of 10%, how much water is stored in a 0.1 by 0.1 miles area of the aquifer? Give yoru answer in cubic feet and gallons; show your work.

Ocean. 25. 50-- Direction of 75 creek Bedrock fault 100 B ground-water flow 175 Ground-water divide 200 A Bedrock fault Legend: 111100 Generalized water-level contours at 25-ft intervals Ground-water flow lines Direction of ground-water flow River flood plain Scale in miles FIGURE 12.3 Water-level contour map showing elevation of the upper surface of the saturated zone (the water table). Groundwater flows down-gradient at right angles to the contours, as shown by the two flow lines that have been added to the map. One mile = 5,280 feet.