Risky coastal flooding States The 25 Most Vulnerable States in America yesensure

Risky coastal flooding States: The 25 Most Vulnerable States in America

Scientists say that when the Earth’s climate changes, the weather becomes more extreme. There have been five category-5 hurricanes in the Atlantic Ocean in the past four hurricane seasons. Other hurricanes were even worse than category 4 or 3 when they hit America.

More homes are being built in places where there is a risk of flooding. This is happening in the U.S., especially in Connecticut, Delaware, Mississippi, New Jersey and Rhode Island. Florida has 9,000 new homes that could flood.

Stacker has a list of people who live near the coast. They ranked them based on how many homes are in a flood zone. Some states have decided not to build new homes in these areas because they already had flooding.

Read the list of states that have more homes threatened by coastal flooding.

1. District of Columbia

There is a risk of flooding in the District of Columbia. If your house could flood, you are at risk. In 2050, 8 houses will be flooded. This is less than 1% of all the houses in D.C., and they have $7 million in property value.

There are not many homes in Washington D.C. that can flood. There are only eight homes that will be in a flooding zone by 2050 and they cost $7 million together. Washington D.C is vulnerable to different types of flooding, such as storm water runoff when there is a lot of rain, or tidal flooding from rivers coming from different directions.

2. Alaska

Coastal flooding is a risk in Alaska. About one percent of homes are threatened by coastal flooding. There are about $16 million worth of property at risk to coastal flooding in Juneau City and Borough, where 23 homes are threatened. Coastal flooding happens when there is a high tide for a long time.

In Alaska, in 2050 there will be 23 homes in 10-year flood zones. The most people that live in these places are from Juneau with over 32,000 people. This is 0.26% of the homes in Juneau. In October 2019, there was heavy rain and mudslides which caused flooding and water damage to houses.

3. Pennsylvania

In Pennsylvania, there is a risk of coastal floods. There are 1,221 homes that could be flooded by 2050. Most people live in Philadelphia County. There are 958 homes threatened and they make up 0.21% of all houses in the county with $288 million in property value.

There is a lot of flooding in Philadelphia County. 900 homes are threatened because of this. $288 million worth of property will be lost because the homes will flood. Flooding has already destroyed $90 million of property each year in Pennsylvania, and there was a big storm in July.

Pennsylvania is not on the coast, but it is in danger of flooding because a river carries water from the ocean to Philadelphia. Zillow and Climate Central included Pennsylvania in their study because of this.

4. Hawaii

There is a risk of flooding in Hawaii. In the next 10 years, 1,701 homes will get flooded (a total of 0.41% of all homes). If 16 new houses are built, 2.21% of them will also be flooded. The most threatened county in this state is Maui County with 1,187 homes at risk and 2.21% of its total homes at risk for flooding which equals $531 million in property value to that county alone. Honolulu County has 359 houses at risk and Kauai County has 126 houses at risk with $585 million in property value combined (to those counties).

Hurricanes are a type of storm in Hawaii. They can be a problem for homeowners. The insurance might not cover them. But not all insurance does this, some does the opposite!

5. Oregon

Oregon is at risk of flooding from the ocean. By 2050, we will have 2,011 homes in 10-year flood zones (0.15% of all home and $418 million worth). There are also 14 new homes that were built since 2010 and are now in flood zones with $3 million worth of property values. The counties most likely to be affected are Clatsop County with 1,307 homes and 6.99% of all homes threatened ($266 million), Coos County with 233 homes and 1.04% of all threatened home values ($39 million) and Lincoln County with 219 houses for 0.81% of all threatened home values ($43 million).

The most homes that are at risk to flooding are in Clatsop, Coos, and Lincoln counties. Already, Coos County had to declare a state of emergency in February after heavy snow and rain hit the western side of the state. In 2050, there will be 233 homes in a flood zone or higher for Coos County.

6. Maine

Maine does not want homes to be in flood zones. It will happen in the future, but it is a thing that has already happened. There are 2,107 homes by 2050 that are threatened from flooding. This is 0.54% of all homes and $1.1 billion worth of property value. There are 72 new homes built since 2010 that are threatened from flooding by 2050 which is 0.71% of all new homes and $62 million worth of property value. The most at risk counties for flooding are York County with 1,657 houses being threatened (2% of all houses, $946 million in property value), Cumberland County with 144 houses being threatened (0%, or no properties), and Sagadah.

There will be 2,107 homes in Maine that will be in a flood zone by 2050. Between 2005 and 2017, $69.9 million was lost because of flooding.

7. Rhode Island

Rhode Island has a high risk of coastal flooding. If nothing changes, by 2050, 2,209 homes (0.7% of all homes) would be in 10-year flood zones. And 78 new homes (1.6% of all new home built since 2010) will also be in areas that are at risk for flooding. This is bad because these homes are worth a lot and could suffer damages if flooding occurs. There are three counties with the most people living on land that is at risk: Washington County which has 1,144 houses threatened by coastal flooding or 2% of all houses; Newport County with 486 houses or 1% per cent; and Bristol County with 322 houses or 1%.

In 2050, Rhode Island will have 1,144 homes in a flood zone. But scientists have found a problem with this. People who live in these homes underestimate their risk of being flooded because they don’t know about it or take measures to protect themselves after they find out. There are around 78 of these homes that were built between 2010 and 2017 – 3 years ago at the time I am writing this sentence.

8. New Hampshire

New Hampshire is at risk of coastal flooding. There are 2,767 homes in the 10-year flood zone by 2050. This is 0.55% of all homes in New Hampshire and will cost $935 million in property value if flooded. There are 13 homes built since 2010 that are threatened with flooding, which is 0.03% of all new homes and costs $6 million property value if flooded. The most threatened counties are Rockingham County (2,754 homes threatened) and Strafford County (13).

In New Hampshire, 2,767 homes will be in a flood zone by 2050. This is 0.55% of all homes and $935 million in property value. Of these homes, 50 were built since 2010 and represent 0.38% of all new homes built and $39 million in property value. The state is trying to raise citizen awareness about flooding dangers by creating Flood Safety Awareness Week which took place last month (March).

9. Mississippi

Mississippi has a high risk of flooding. In 10 years, 4,617 homes in the state will be in flood zones. Of these homes, 333 will be new and built since 2010. The most threatened counties are Hancock County with 2,158 homes affected by flooding (11.7% of all homes in the county), Jackson County with 1,340 homes (2.57% of all homes) and Harrison County with 1,119 houses (1.63% of all).

In the future, there will be less homes in a flood zone. That means it is safer. There has been $877 million of property value that could be at risk, but only 333 houses have been built since 2010. That is 1.32% of all the new houses and $84 million worth of real estate lost between 2005 and 2017 due to flooding.

10. Alabama

In some counties of Alabama, there is a risk of coastal flooding. By 2050, 7,290 homes in the 10-year flood zones will be threatened (0.46% of all homes). In this same time period, 167 new homes built in flood zones will be threatened (0.36% of all new homes). The counties that are most at risk for flooding include Baldwin County with 5,237 threatened houses (5.29% of all houses in the county), Mobile County with 2,053 threatened houses (1.49%), and Clarke County with no homes that are threatened yet from coastal flooding (0%).

In 2050, there will be about 7,290 homes in a flood zone. In this time 167 of these homes were built after 2010 and are mostly in the counties of Baldwin and Mobile. In September 2019, Baldwin County was hit with flash flooding and sewage overflows.

11. Georgia

Georgia is at risk for coastal floods. These floods will happen in the future, and by 2050 there will be 10,345 homes in flood zones. This is 0.31% of all homes, $5.7 billion worth of property. New homes built since 2010 are also at risk for flooding – this is a total of 146 homes which is 0.16% of all new houses and $112 million worth of property value in Glynn County alone! There are also 3,841 threatened homes in Chatham County and 615 threatened homes in Camden County – these are 4% or 3% respectively of the total number of homes there which equals $2 billion or $175 million worth of property value combined for these two counties.

Georgia has 10,345 homes that are in a flood zone by 2050. These houses are worth $5.7 billion and a lot of them were built from 2010-2017 and they are closest to the coast. Hurricane Dorian made a state of emergency in 12 counties including the most at-risk counties: Glynn, Chatham, and Camden County.

12. Connecticut

There is a high risk of flooding for homes in Connecticut. The number of homes in ten year flood zones by 2050 will be 10,879 (1.03% of all homes). There are 478 new homes built since 2010 also located in flood zones which will have $880 million worth of house property by 2050. The most threatened counties are Fairfield County (5,750 homes threatened) and New Haven County (3,196). Middlesex County has 1,376 homes threatened.

In Connecticut, there are 10,879 homes at risk of flooding. This is the 14th highest for the United States. Out of these 478 homes, which were built between 2010 and 2017, 458 have been built after 2010.

13. Delaware

In Delaware there will be a chance of a flood in the future. There may be 12,597 homes with flood zones by 2050 (3.63% of all homes). There will also be 1,268 new homes that are built and located in these same zones by 2050. These are found mostly in Sussex County and New Castle County. This makes them more likely to have a flood at some point because over 10,000 homes is threatened by this disaster.

In Delaware, in the future, 12,597 homes will be in 10-year flood zones. That is a lot of homes. These homes are worth $7.2 billion and 1,268 of them were built between 2010 and 2017. In Delaware, some roads get flooded when it rains a lot.

14. Washington

The Washington coast is at risk of floods. In 2050, homes in a 10-year flood zone will be 14,386 houses. Houses built after 2010 are 136 houses and these are in flood zones. The counties most threatened will be Grays Harbor County with 5,865 homes or 19.96% of all homes in the county with $603 million in property value; King County has 2,124 houses or 0.35% of all homes worth $2 billion; and Island County has 1,209 houses which is 3.38% of all homes worth $1 billion dollars.

In Washington state, there is a danger that 14,386 homes and $6.8 billion in property value will be lost by 2050. This is because of tsunamis and rising sea levels caused by climate change. One town called Taholah near Grays Harbor has been moved to protect it from tsunamis and flooding. Even landlocked counties are at risk of flooding because rivers have risen too high to protect the county from floods.

15. Massachusetts

In Massachusetts, there are 20,846 homes in coastal flood zones. There are 188 new homes that have been built in the last 10 years, with 59% of them being threatened by flooding. Suffolk County has 7,825 homes at risk of flooding while Plymouth County has 3,720. Essex county is also at risk with 3234 homes being threatened by floods.

Many homes in Massachusetts are going to be in a 10-year flood zone by 2050. There will be many people who can lose their money or property value because of storms. The counties most at risk are Suffolk, Plymouth, and Essex. In Suffolk county where Boston is located there are 7,825 homes under 10 year flood zones and $6.9 billion in property value that can be lost to storms or rising seas.

16. Texas

Texas is at risk of floods. By 2050, there will be 27,339 homes in 10-year flood zones. There will be 1,637 new homes built since 2010 in the flood zone by 2050. Most threatened counties: Galveston County (14,249 homes threatened), Brazoria County (2,990) and Nueces County (2,296).

There are 27,339 homes in 10-year flood zones in Texas. That is a lot of homes that will be at risk for flooding if there is another hurricane like Hurricane Harvey. Some people think that it would be a good idea to tell the buyers if their home will flood or has flooded before.

17. South Carolina

South Carolina has a high risk of floods. By 2050, 29,418 homes will be in flood zones (1.53% of all homes). In places built since 2010, there will be 1,216 new homes in flood zones (1.52% of all new homes). Most threatened counties are Charleston County with 13,824 houses threatened (9.64% of the total), Beaufort County with 6,449 houses threatened (8.17%), and Horry County with 4,667 houses threatened (2.67%).

In 2050, 30,000 houses will be in a flood zone. This is a lot. There is $19 billion worth of property value in the homes that are in the flood zone. However, building new homes continues in South Carolina despite this.

18. Maryland

The risk of a coastal flood in Maryland is 1.56% of all homes. The number of homes that are threatened by the sea by 2050 is 29,854. This makes it a force to be reckoned with. In Worcester County, 14,145 homes are threatened by the sea and they make up 27% of all homes there which have a value at $4,700 million dollars in property value. Somerset County has 3,950 houses threatened and 43% of all houses (or $465 million in property value). And Dorchester County has 2,744 housing units that are threatened and 19% percent (or $778 million in property value).

Maryland has 29,854 homes that will be in flood zones by 2050. These homes make up 1.56% of all homes and about $10 billion in property value. Half of these houses are in Worcester County, where 14,145 are worth over $4 billion.

19. Virginian

Virginian homes are at risk of flooding. 10% of all homes in Virginia will be flooded by 2050. Homes built after 2010 have a 0.9% chance of being flooded, and the average value is $420 million. The counties most likely to flood are Accomack County (29% chance), Virginia Beach city (3%), Norfolk city (8%). These counties will lose $1 billion, $2.5 billion, and $1 billion respectively.

There are 33,667 homes in Virginia that have a risk of flooding. This is 1% of the homes in Virginia. The most at risk are Accomack County and Virginia Beach with $11.2 billion worth of property value there. Houses that have flooded or are at risk of flooding can be bought out by the city with money for new houses to be built on the land where they were before.

20. California

People might live near the water in California. The more homes are built near the water, the more likely it is that people will be hurt by floods. It is important to try to keep new homes from being built in flood zones, because they will have a lot of money and property there. Already 42,648 homes are in flood zones and 367 new ones were built after 2010. Most of these homes are threatened with floods in San Mateo County (19,723), Marin County (4,827), and San Joaquin County (4,680).

California is a state with many people. The number of homes in 10-year flood zones is the same as 42,648. These homes are worth $60 billion! There are only 367 new homes that were built in this area between 2010 and 2017. San Mateo County has the most of these homes at 19,723 which is more than $30 billion in property value. The county wants to expand its flood control district because there are a lot of people living there who need help and could get hurt if it floods.

21. North Carolina

North Carolina is at risk for coastal flooding. There are 50,477 homes in 10-year flood zones by 2050. That is 1.41% of all homes and $18 billion in property value. If a home was built since 2010 it will be in a flood zone by 2050 and there are over 1,910 homes like this (1.07% of all new homes). The counties with the most people affected are Dare County with 11,689 houses threatened (36.22% of all homes), Carteret County with 5,369 houses threatened (12.91% of all homes), Brunswick County with 5,298 houses threatened (6.95% of all homes), and more counties that have around 4%-5%.

By 2050, North Carolina will have more than 50,000 homes in the 10-year flood zone. This is 1.41% of all homes in North Carolina. The Outer Banks are one of 3 counties where there are a lot more homes at risk. There was flooding and damage during Hurricane Dorian this past summer when it hit.

22. Louisiana

Louisiana is at risk of coastal floods. There are 63,636 homes in 10-year flood zones by 2050 that will have $9.5 billion in property value. There are also 612 homes built since 2010 that will be threatened by 2050 with $141 million in property value. The most affected counties are Terrebonne Parish which has 16,695 homes, 46.56% of all homes in the county and St Tammany Parish which has 7,432 homes or 8% of all its home and $1.9 billion in property value each year from 2020 to 2040. St Mary parish is also affected with 5,939 homes 23%.

Louisiana is at risk of floods. They predict that in the next 10 years, there will be 63,636 homes which are in flood zones. This equals 4% of their homes and it’s worth $9.5 billion. The three parishes most at risk are Terrebonne, St. Tammany, and St. Mary (even though Louisiana plans to spend money on them).

23. New York

New York is at risk of coastal floods. There are 67,315 homes in 10-year flood zones by 2050. There are 393 new homes built since 2010 that will also be in these flood zones by 2050. The most threatened counties are Nassau County with 24,441 homes threatened, Suffolk County with 16,055 threatened homes and Queens County with 12,249 threatened homes.

By 2050, the State of New York will have over 67,000 homes in a 10-year flood zone. All of these are in the southern part of the state. Many people might not be able to afford their insurance rates if FEMA changes its structure for premiums for flood insurance.

24. New Jersey

In New Jersey, there is a risk of coastal flood. Homes in 10-year flood zones by 2050: 133,758 (5.16% of all homes, $77.9 billion in property value). Homes built since 2010 in flood zones by 2050: 4,524 (11.25% of all new homes, $4.6 billion in property value). Most threatened counties: Ocean County (46,684 homes threatened), Cape May County (33,548 homes threatened), and Atlantic County (19,280 homes threatened).

In New Jersey, there are many homes in a flood zone. This is about 5% of all the homes in the state. There is $77.9 billion worth of property value there and it will be flooded which affects Ocean, Cape May, and Atlantic counties. Towns like Ocean City on the Jersey Shore have been losing $530 million because of flooding since 2005 according to a study by First Street Foundation and Columbia University.

25. Florida

The risk of coastal flooding is higher in Florida now. In 10 years, there will be 158,859 homes (2.12% of all homes) threatened by floods. Out of those, 2,645 are new homes that were built since 2010. The most threatened counties are Miami-Dade County with 30,171 homes in 10-year flood zones (3.93% of all the homes), Pinellas County with 23,233 homes (6.28%), and Broward County with 11,761 homes (1.81%).

Florida has more homes in the 10-year flood zone than any other state by 2050. Miami, Pinellas, and Broward counties have the most homes at risk. These three counties represent less than half of Florida’s homes threatened by flooding. North Miami bought out flood-prone properties in the past. Now, other parts of Florida are buying up more of these properties on a larger scale.

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