Exercise 1
The following image is a cross section showing several wells completed at various levels. The two aquifers are separated by a confining layer; some wells are completed in the upper aquifer (aquifer 1) and some are completed in the lower aquifer (aquifer 2). The symbol with the upside‑down triangle next to a well indicates the water level in that well. The water levels in wells A and B have not yet been measured.
Based on the water levels shown in the diagram, answer the following questions:
- Which aquifer is confined?
- In which well would you expect to see a higher water level: well A or well B?
- Use the upside‑down triangle symbol to indicate where you would predict the water levels are located in wells A and B.
- Which direction is groundwater flowing in each aquifer? Draw two arrows on the cross section to indicate the direction of flow in each aquifer.