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Water Resources Vulnerability

WorldPhysical EnvironmentSocial / HealthEconomic

Measure of projected water stress in the year 2020; water stress is the ratio of total annual water withdrawals to total available annual renewable supply.

World Resources Institute

A world map shows water resources vulnerability.

Areas shaded in light yellow represent regions with arid and low water use, predominantly found in parts of Australia (central regions), Egypt, Saudi Arabia, Libya, Mauritania, and Yemen. Regions with low vulnerability, less than 10 percent, are shown in light orange and are primarily located in most parts of Africa, South America, Canada, Russia, most of Asia. Areas with low-medium vulnerability, ranging from 10 to 20 percent, are depicted in orange and are scattered throughout some parts of Japan and U S A, some parts of Asia and Europe. Medium-high vulnerability areas, between 20 to 40 percent, are shown in light red and are mainly found in South Africa, China, and many more. High vulnerability regions, ranging from 40 to 80 percent, are shaded in red and are located in parts of U S A, Europe, and Asia. Areas with extremely high vulnerability, over 80 percent, are shown in dark red and include most of U S A and Asia. Some areas such as Greenland and South Pole are marked with a gray shade, indicating no data available for those regions.

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Water Resources Vulnerability

No data

Arid and low water use

Low (<10%)

Low-medium (10-20%)

Medium-high (20-40%)

High (40-80%)

Extremely high (>80%)

Alaska
0.132%87.9%0.193%0.154%1.32%
Arizona
3.34%9.37%6.97%0.448%4.52%
Utah
20.8%13.7%0.313%0.420%49.5%
Yukon
0.923%99.0%
Northwest Territories
0.342%3.62%
District of Columbia
100%
Florida
10.4%12.0%0.279%0.266%0.590%
Idaho
0.772%13.8%28.4%8.83%44.9%
New Hampshire
17.2%33.7%40.5%8.46%
Rhode Island
0.183%86.5%6.09%
Vermont
7.27%88.3%4.41%
Washington
72.6%3.37%5.42%0.287%6.53%
Wyoming
21.7%0.541%70.3%
Nunavut
0.979%18.2%
Montana
28.7%2.60%14.6%5.24%35.2%
Maine
94.9%2.65%0.228%0.817%
North Dakota
7.38%3.22%4.45%0.249%9.67%36.7%
Kentucky
76.6%17.7%5.68%
Nova Scotia
0.182%80.1%
Virginia
11.9%0.775%16.4%1.64%
Delaware
0.105%37.7%61.1%
Prince Edward Island
98.5%
Saskatchewan
4.25%59.9%2.62%2.54%2.67%0.868%
Mississippi
74.5%1.57%23.9%
West Virginia
63.6%17.6%14.6%
Nebraska
0.605%3.54%22.3%73.5%
Texas
4.07%3.41%2.84%1.94%22.5%2.71%
Missouri
45.5%14.9%0.131%5.37%
Louisiana
54.5%20.6%5.75%
Hawaii
7.82%
North Carolina
0.116%12.2%54.7%3.14%0.982%
Oregon
14.3%48.2%11.8%4.82%0.772%0.847%
New Brunswick
99.5%
Alabama
92.6%5.45%0.987%
New Mexico
30.3%0.128%7.32%21.7%
Kansas
0.176%1.82%13.8%68.4%
Wisconsin
5.67%25.0%40.8%9.68%
British Columbia
92.0%1.55%0.285%
Newfoundland and Labrador
74.5%
New Jersey
0.162%3.07%94.0%1.76%
South Carolina
0.748%24.6%36.2%
Michigan
56.0%3.00%4.63%9.70%
Alberta
3.52%56.8%0.267%4.01%3.67%11.4%
Connecticut
0.460%29.6%24.9%23.8%1.35%
Pennsylvania
1.42%27.8%49.9%3.96%
Colorado
0.795%9.40%85.2%
Nevada
8.21%0.731%1.40%0.413%2.80%24.0%
Massachusetts
0.206%0.166%33.6%8.30%30.7%
Georgia
8.71%47.0%37.9%
New York
25.4%5.89%56.3%5.19%0.401%
Maryland
0.151%4.45%64.3%1.05%8.49%
Québec
99.1%0.240%
Manitoba
0.656%83.1%11.7%2.04%1.39%
Oklahoma
11.4%5.60%4.28%17.9%30.0%
Tennessee
90.1%5.50%
Ontario
97.2%1.67%1.13%
California
0.688%12.5%0.232%17.8%2.26%1.00%
Arkansas
12.6%46.8%33.2%6.01%
South Dakota
32.7%3.47%37.3%22.0%
Ohio
3.42%0.721%29.0%
Indiana
0.434%1.19%8.61%4.78%
Minnesota
21.0%3.81%13.1%23.4%22.0%
Iowa
26.6%12.5%44.0%16.3%0.628%
Illinois
30.9%0.187%44.1%9.75%
0.19.0