Figure 4. Factors that may change the demand for beach nourishment.
| Shift Variable | Examples | |
| Policy Factors | Federal Subsidies | Federal-non federal cost share split. HFIP. |
| Local Policies |
Building codes and land use plans. Transportation (roads, parking, and mass transient policy). |
|
| Policy Factors | Income Change | Long-term increase in per capita GDP. |
| Change in prices of substitute or compliments | Changes in the availability and pricing of alternatives to living or vacationing at the beach such as lakeside homes or visiting Disney World. Changes in the pricing and availability of alternative beach erosion techniques. |
|
| Changes in Population | Changes in the number of people in the beach residential or recreation market. | |
| Chages in Tastes and preferences | Beach living or vacationing becomes more or less popular. | |
| Changes in Other Factors | Anything other than a price change that could effect beach use. | |