| A | B |
|---|
| reason for using groundwater | cheaper than drilling a well |
| zone of aeration | has air in the soil, soil is not compact |
| zone of saturation | all open spaces have water |
| water table | boundary where you pass from zone of aeration to zone of saturation |
| unconfined aquifer | as recip fall to earth, moisture perculates down to the zone of saturation |
| confined aquifer | sealed - blockedoff. water cannot go thre and water builds up on top saturating the upper layer. |
| original water table | where water was first measured |
| confined aquifer is limited to | a very small entrance point. |
| aquiclude | prevents water from getting thru an area |
| cone of depression | water running into well pipe creates a depression as water moves |
| how does a cone of depression form | when we take water out and water flows into well and produces a depression |
| artesian well | naturally occurring well, water is under pressure rises due to pressure. |
| confined | sealed, pressurized |
| unconfined | open to surface, develop cones of depression. |
| potentiometric surface | pressure surface, how high water can potentially rise |
| side effects of groundwater overuse | overpumping, quifer collapse, salt-water intrusion |
| Dry Aquifer | overpumping causes aquifer to go dry |
| Collapsed Aquifer | the ground water supports the weight and if water buoyancy goes away, then has full weight of aquifer |
| Salt-Water Intrusion | wells near ocean that take too much water out then sea (salt) will intrude and have to move pump more inland to pure water |
| Causes of Ground Water Pollution | septic systems, waste dumps, industrial sites. |
| Biggest ground water pollutant | Agriculturale pollution |
| types of agricultural pollution | pesticide, herbicides fertilizer |
| why is agricultural pollution so bad | water soluble and ends up in the ground water. |
