Areas of Heavy Groundwater Extraction
WorldPhysical EnvironmentAgricultureLocations where groundwater systems experience levels of extraction exceeding recharge rates over a limited period of time
Die Bundesanstalt für Geowissenschaften und RohstoffeA map shows areas of heavy groundwater extraction worldwide, marked with blue shaded dots. Highest extraction areas include the United States, Mexico, China, and India.
Areas of Heavy Groundwater Extraction | Denver Basin | 4.50–4.59 pH | 4.60–4.69 pH | 4.70–4.79 pH | 4.80–4.89 pH | 4.90–4.99 pH | 5.00–5.09 pH | 5.10–5.19 pH | 5.20–5.29 pH | ≥5.30 pH | 100 and above | 81–100 | 71–80 | 61–70 | 51–60 | 41–50 | 31–40 | 21–30 | 11–20 | 6–10 | 2–5 | 1 and below | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Alaska | 7.66% | 55.2% | 19.9% | ||||||||||||||||||||
Arizona | 1 | 1.23% | 98.8% | 8.64% | 10.8% | 6.36% | 10.3% | 8.92% | 4.76% | ||||||||||||||
Utah | 1.69% | 98.3% | 6.90% | 15.9% | 5.97% | ||||||||||||||||||
Yukon | 7.00% | 59.8% | 26.1% | 7.10% | |||||||||||||||||||
Northwest Territories | 5.77% | 26.0% | 42.2% | 3.09% | |||||||||||||||||||
District of Columbia | 100% | 100% | |||||||||||||||||||||
Florida | 1.32% | 13.8% | 25.9% | 9.02% | 56.6% | 20.8% | 3.46% | ||||||||||||||||
Idaho | 4.63% | 95.4% | 5.95% | 12.1% | 9.81% | 31.7% | |||||||||||||||||
New Hampshire | 72.0% | 27.9% | 94.4% | 5.56% | |||||||||||||||||||
Rhode Island | 2.00% | 3.88% | 3.91% | ||||||||||||||||||||
Vermont | 95.7% | 4.07% | 100% | ||||||||||||||||||||
Washington | 23.4% | 70.9% | 1.35% | 57.1% | 1.44% | ||||||||||||||||||
Wyoming | 100% | 5.38% | 5.86% | 13.2% | |||||||||||||||||||
Nunavut | 1.70% | 21.4% | 1.54% | ||||||||||||||||||||
Montana | 9.26% | 90.7% | 1.73% | 42.7% | 23.7% | 7.99% | |||||||||||||||||
Maine | 17.3% | 69.8% | 10.8% | 79.8% | 14.7% | 5.13% | |||||||||||||||||
North Dakota | 100% | 95.7% | 4.33% | ||||||||||||||||||||
Kentucky | 1.72% | 54.3% | 1.61% | 9.53% | 41.2% | 58.8% | |||||||||||||||||
Nova Scotia | 19.0% | 8.02% | |||||||||||||||||||||
Virginia | 3.50% | 1.66% | 15.4% | 5.25% | 53.9% | 38.5% | 2.22% | ||||||||||||||||
Delaware | 17.4% | 81.8% | 99.2% | ||||||||||||||||||||
Prince Edward Island | 98.5% | ||||||||||||||||||||||
Saskatchewan | 18.8% | 50.7% | 20.5% | ||||||||||||||||||||
Mississippi | 14.3% | 79.0% | 5.27% | 13.6% | 19.8% | 65.6% | |||||||||||||||||
West Virginia | 7.63% | 45.0% | 12.8% | 8.92% | 97.0% | 3.04% | |||||||||||||||||
Nebraska | 100% | 38.0% | 62.0% | ||||||||||||||||||||
Texas | 2 | 8.53% | 1.49% | 4.74% | 5.19% | 56.4% | 1.43% | 21.8% | 34.0% | 42.5% | |||||||||||||
Missouri | 26.1% | 26.9% | 12.0% | 34.2% | 100% | ||||||||||||||||||
Louisiana | 41.6% | 42.5% | 8.80% | 4.48% | 2.23% | 2.08% | 60.9% | 36.6% | |||||||||||||||
North Carolina | 1 | 1.35% | 37.2% | 1.72% | 9.88% | 16.4% | 81.1% | 2.09% | |||||||||||||||
Oregon | 2.68% | 97.3% | 7.84% | 63.3% | 28.9% | ||||||||||||||||||
New Brunswick | 31.5% | 64.2% | 2.38% | ||||||||||||||||||||
Alabama | 84.6% | 13.4% | 14.4% | 11.5% | 12.9% | 58.4% | |||||||||||||||||
New Mexico | 4.15% | 91.3% | 3.65% | 6.22% | 12.8% | 2.01% | 14.3% | ||||||||||||||||
Kansas | 100% | 100% | |||||||||||||||||||||
Wisconsin | 4.01% | 46.8% | 27.3% | 21.3% | 19.7% | 79.8% | |||||||||||||||||
British Columbia | 1.59% | 35.7% | 19.7% | 2.10% | |||||||||||||||||||
Newfoundland and Labrador | 2.13% | 3.18% | 1.22% | ||||||||||||||||||||
New Jersey | 5.98% | 36.6% | 32.6% | 23.7% | 28.5% | 71.2% | |||||||||||||||||
South Carolina | 1 | 33.6% | 64.2% | 2.08% | 1.10% | 75.7% | 23.2% | ||||||||||||||||
Michigan | 24.0% | 10.0% | 4.73% | 13.3% | 4.25% | 65.7% | 11.8% | ||||||||||||||||
Alberta | 2.96% | 41.2% | 52.3% | ||||||||||||||||||||
Connecticut | 49.9% | 50.0% | 99.9% | ||||||||||||||||||||
Pennsylvania | 3.58% | 34.8% | 29.1% | 10.8% | 14.0% | 81.5% | 4.50% | ||||||||||||||||
Colorado | 1 | 1.85% | 3.55% | 88.3% | 13.8% | 53.9% | 10.3% | 3.14% | |||||||||||||||
Nevada | 100% | 13.2% | 33.3% | 53.5% | |||||||||||||||||||
Massachusetts | 98.2% | 91.5% | 6.67% | ||||||||||||||||||||
Georgia | 7.01% | 3.21% | 2.51% | 3.47% | 2.02% | 11.8% | 34.0% | 52.1% | |||||||||||||||
New York | 4.25% | 52.6% | 35.3% | 42.9% | 2.90% | ||||||||||||||||||
Maryland | 12.5% | 29.8% | 10.3% | 11.3% | 16.7% | 71.1% | |||||||||||||||||
Québec | 9.73% | 2.25% | 18.5% | 22.7% | 14.4% | ||||||||||||||||||
Manitoba | 3.86% | 21.7% | 27.1% | 47.3% | |||||||||||||||||||
Oklahoma | 1 | 2.73% | 5.70% | 91.6% | 94.0% | 6.04% | |||||||||||||||||
Tennessee | 5.63% | 19.5% | 14.5% | 3.55% | 95.3% | 4.67% | |||||||||||||||||
Ontario | 2.04% | 56.2% | 35.4% | 2.08% | |||||||||||||||||||
California | 1 | 99.7% | 46.0% | 7.90% | 27.9% | ||||||||||||||||||
Arkansas | 1 | 17.5% | 40.8% | 7.44% | 10.2% | 100% | |||||||||||||||||
South Dakota | 100% | 61.9% | 38.1% | ||||||||||||||||||||
Ohio | 5.07% | 9.56% | 59.7% | 23.0% | 77.5% | 20.4% | |||||||||||||||||
Indiana | 12.8% | 4.37% | 8.75% | 5.18% | 1.92% | 97.6% | |||||||||||||||||
Minnesota | 2.86% | 4.42% | 92.3% | 22.5% | 75.0% | 2.49% | |||||||||||||||||
Iowa | 1.50% | 98.5% | 30.7% | 69.3% | |||||||||||||||||||
Illinois | 1 | 39.9% | 27.0% | 15.0% | 3.08% | 9.73% | 38.2% | 58.7% | 3.07% | ||||||||||||||
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