1. Salt Water Intrusion and its Threat to North Carolina
By Drew Thorndyke

2. Salt Water Intrusion Displacement of freshwater by salt water as a
result of excess
pumping in
coastal areas.

3. Saltwater intrudes in two main ways
Lateral Encroachment
Vertical Upconing

4. Lateral Encroachment

5. Vertical Upconing

6. Why does saltwater intrusion occur?
Drop in groundwater level
Development, population growth
Ghyben Herzburg
Sea level rise
Thermal expansion

7. Where in North Carolina has saltwater intrusion occurred
Cape Hatteras Island
Pitt County
Pender County
New Hanover County
Brunswick County

8. What can we do to prevent saltwater intrusion
Conservation of ground water
Other sources
Personal effort
Reusing water
Groundwater recharge
Monitoring

9. The Key to Controlling Saltwater Intrusion
Maintaining a healthy aquifer by balancing the amount of water being pumped out with the amount put back in