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Transportation and Climate Change Clearinghouse

Impact Forecasts

State of Delaware 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 0.2 0% 0.9 1% 1.1 2% 0.2 0% 1.0 2% 1.2 2%
Non-Interstate Principal Arterials 0.1 0% 5.7 1% 5.8 1% 0.2 0% 7.1 1% 7.3 1%
Minor Arterials 0.1 0% 18.3 8% 18.4 8% 0.3 0% 21.7 10% 22.0 10%
National Highway System (NHS) 0.3 0% 21.8 4% 22.1 4% 0.5 0% 25.3 5% 25.8 5%
Rails 0.8 0% 14.1 3% 14.9 3% 0.9 0% 16.0 3% 16.9 3%
Area Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected
Ports 2 1% 47 14% 49 15% 3 1% 70 22% 73 22%
Airport Property 0 0% 126 2% 126 2% 0 0% 133 2% 133 2%
Airport Runways 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
Total Land Area Affected 37,074 3% 87,369 7% 124,443 10% 42,140 3% 87,111 7% 129,251 10%


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 0.2 0% 1.1 2% 1.3 2% 0.5 1% 1.2 2% 1.7 3%
Non-Interstate Principal Arterials 0.2 0% 7.9 1% 8.1 1% 0.9 0% 8.8 1% 9.7 2%
Minor Arterials 0.5 0% 22.7 10% 23.2 11% 1.4 1% 23.7 11% 25.1 12%
National Highway System (NHS) 0.7 0% 26.8 5% 27.5 5% 2.4 0% 28.3 5% 30.7 6%
Rails 1.2 0% 17.7 3% 18.9 3% 4.2 1% 17.8 3% 22.0 4%
Area Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected Acres % Affected
Ports 4 1% 85 26% 89 27% 10 3% 102 32% 113 35%
Airport Property 0 0% 138 2% 138 2% 0 0% 148 3% 148 3%
Airport Runways 0 0% 0 0% 0 0% 0 0% 0 0% 0 0%
Total Land Area Affected 45,720 4% 86,970 7% 132,690 11% 58,786 5% 79,004 6% 137,790 11%


Increase in Eustatic SLR 59 cm
Regular
Inundation
At-Risk Total
Length Km % Affected Km % Affected Km % Affected
Interstates 0.6 1% 1.4 2% 2.0 3%
Non-Interstate Principal Arterials 1.2 0% 9.6 2% 10.8 2%
Minor Arterials 3.8 2% 22.7 10% 26.5 12%
National Highway System (NHS) 5.2 1% 27.5 5% 32.7 6%
Rails 6.4 1% 17.8 3% 24.2 4%
Area Acres % Affected Acres % Affected Acres % Affected
Ports 17 5% 109 34% 126 39%
Airport Property 26 0% 128 2% 154 3%
Airport Runways 0 0% 0 0% 0 0%
Total Land Area Affected 69,845 6% 70,892 6% 140,737 11%



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.

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