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Transportation and Climate Change Clearinghouse

Impact Forecasts

Atlantic Coast of Florida Statistics

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Increase in Eustatic SLR 6 cm 21 cm
Regular
Inundation
At-Risk Total Regular
Inundation
At-Risk Total
Length Km % Affected Km % Affected Km % Affected Km % Affected Km % Affected Km % Affected
Interstates 2.4 0% 3.0 0% 5.4 0% 2.6 0% 6.9 1% 9.5 1%
Non-Interstate Principal Arterials 19.9 0% 81.0 2% 100.9 2% 40.8 1% 105.3 2% 146.1 3%
Minor Arterials 6.7 0% 45.0 3% 51.7 4% 20.2 1% 41.8 3% 62.0 5%
National Highway System (NHS) 14.3 0% 38.5 1% 52.8 2% 28.8 1% 44.2 1% 73.0 2%
Rails 9.2 0% 41.9 1% 51.1 2% 18.7 1% 48.6 1% 67.3 2%
Area Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected
Ports 632 15% 715 17% 1,347 32% 897 22% 594 14% 1,492 36%
Airport Property 682 1% 1,509 2% 2,191 3% 1,215 2% 1,826 3% 3,041 5%
Airport Runways 13 0% 168 3% 181 3% 44 1% 249 4% 293 5%
Total Land Area Affected 698,085 5% 639,550 5% 1,337,635 10% 989,494 7% 470,609 3% 1,460,102 11%


Increase in Eustatic SLR 31 cm 48.5 cm
Regular
Inundation
At-Risk Total Regular
Inundation
At-Risk Total
Length Km % Affected Km % Affected Km % Affected Km % Affected Km % Affected Km % Affected
Interstates 3.7 0% 9.1 1% 12.8 1% 4.4 0% 34.0 3% 38.4 4%
Non-Interstate Principal Arterials 58.5 1% 121.7 2% 180.2 3% 82.9 2% 219.8 4% 302.7 6%
Minor Arterials 25.6 2% 45.2 3% 70.8 5% 39.4 3% 44.0 3% 83.4 6%
National Highway System (NHS) 41.6 1% 47.3 2% 88.9 3% 54.9 2% 104.6 3% 159.5 5%
Rails 22.7 1% 58.6 2% 81.3 2% 31.2 1% 103.9 3% 135.1 4%
Area Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected
Ports 1,072 26% 512 12% 1,583 38% 1,250 30% 676 16% 1,926 46%
Airport Property 1,729 3% 1,972 3% 3,701 6% 2,617 4% 1,974 3% 4,591 7%
Airport Runways 135 2% 244 4% 379 7% 258 5% 167 3% 425 8%
Total Land Area Affected 1,097,768 8% 451,145 3% 1,548,913 11% 1,250,250 9% 554,066 4% 1,804,316 13%


Increase in Eustatic SLR 59 cm
Regular
Inundation
At-Risk Total
Length Km % Affected Km % Affected Km % Affected
Interstates 6.5 1% 35.2 3% 41.7 4%
Non-Interstate Principal Arterials 103.5 2% 309.3 6% 412.8 8%
Minor Arterials 46.8 3% 48.1 4% 94.9 7%
National Highway System (NHS) 70.9 2% 128.1 4% 199.0 6%
Rails 40.8 1% 135.6 4% 176.4 5%
Area Acres % Affected Acres % Affected Acres % Affected
Ports 1,344 32% 693 17% 2,036 49%
Airport Property 2,828 4% 2,534 4% 5,361 8%
Airport Runways 280 5% 200 4% 480 9%
Total Land Area Affected 1,342,836 10% 617,180 5% 1,960,016 15%


1. Sources: Interstates, Non-Interstate Principal Arterials, Minor Arterials, and NHS - National Highway Planning Network (NHPN). Rails - Federal Railroad Administration.
Ports - Digitized from Digital Orthophoto Quadrangles clipped to the mean high water line. Airport Property and Runways - Tele Atlas.
2. The NHPN includes all Interstates and other Principal Arterials, all Rural Minor Arterials, and a small portion of the Urban Minor Arterials, as well as the NHS.
3. This study includes the Rural Minor Arterials but not the Urban Minor Arterials.
4. See section 3 of the "Study Goals and Methodologies" for an explanation of how these results were generated.
The results should not be understood as defining specific changes in water levels at precise points in time.
5. The Total column for each scenario includes the sum of Regular Inundation and At-Risk. The At-Risk column does not include Regularly Inundated data.
6. The numbers presented here represent area and infrastructure affected in all of the counties in Florida that border the Atlantic Ocean.

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