## Projected Coastal Flood Increases (2018 to 2118)

Relative Sea Level Change for USACE Intermediate Scenario graph

- 2018
- 2038
- 2058
- 2078
- 2098
- 2118

Extreme water levels chart

(Annual Exceedence Probability):

- 99 percent flood: with a 99 percent chance of being equaled or exceeded in nearly every year, often referred to as the annual storm. (Water level increases from less than four feet to nearly eight feet.)
- 10 percent flood: with a 10 percent chance of being equaled or exceeded in nearly every year, often referred to as the 10-year storm. (Water level increases from nearly eight feet to almost ten feet.)
- 2 percent flood: with a 2 percent chance of being equaled or exceeded in nearly every year, often referred to as the 50-year storm. (Water level increases from almost ten feet to more than twelve feet.)
- 1 percent flood: with a 1 percent chance of being equaled or exceeded in nearly every year, often referred to as the 100-year storm. (Water level increases from more than twelve feet to nearly sixteen feet.)
- 0.2 percent flood: with a 0.2 percent chance of being equaled or exceeded in nearly every year, often referred to as the 500-year storm. (Water level increases from more than fourteen feet to almost eighteen feet.)

## Annual Exceedence Probability: 99% Flood

99 percent flood: with a 99 percent chance of being equaled or exceeded in nearly every year.

Often referred to as the annual storm. (Water level increases from less than four feet to nearly eight feet.)

## Annual Exceedence Probability: 10% Flood

10 percent flood: with a 10 percent chance of being equaled or exceeded in nearly every year.

Often referred to as the 10-year storm. (Water level increases from nearly eight feet to almost ten feet.)

## Annual Exceedence Probability: 2% Flood

2 percent flood: with a 2 percent chance of being equaled or exceeded in nearly every year.

Often referred to as the 50-year storm. (Water level increases from almost ten feet to more than twelve feet.)