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Principal Aquifers

North AmericaPhysical Environment

Locations of various aquifers in North America, including consolidated rock aquifers, which are made up of mostly volcanic rocks in the Northwest and mostly sandstone and limestone elsewhere; combination aquifers, which are sand and gravel aquifers overlying productive rock aquifers; and productive aquifers, which have a 0.4 liter/second potential

Geosystems: Intro to Physical Geography

A map highlights the principal aquifers across North America, categorized into three types.

Consolidated rock aquifers, shaded in green, are predominantly found in northern Canada, including regions like Yukon, Northwest Territories, and Nunavut, and extending into parts of British Columbia, Alberta, Saskatchewan, Manitoba, and Newfoundland and Labrador. Also found in the northern Canada regions like Victoria Island, Parry Island, Canadian Arctic Archipelago, and Ellesmere Island, also extending to Southern regions like Winnipeg, Ottawa, and Halifax. Combination aquifers, shaded in orange, are primarily located in the central and eastern United States, covering areas in states like Texas, Oklahoma, Kansas, Nebraska, and South Dakota, and extending to parts of the Midwest, Northeast, and Southeast, including New York, Pennsylvania, and Florida. Productive aquifers, also shaded in light green, are found in regions of Florida and across the western United States near Oregon.

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Principal Aquifers

Consolidated rock aquifers

Combination aquifers

Productive aquifers

Arizona
5.15%
Utah
2.03%
Yukon
83.0%
Northwest Territories
37.6%
District of Columbia
55.6%
Florida
25.3%1.48%
Idaho
1.85%6.13%
Washington
1.17%
Wyoming
3.58%
Nunavut
2.51%
Montana
1.34%
North Dakota
3.00%6.69%
Kentucky
8.30%
Nova Scotia
29.2%
Virginia
8.27%
Delaware
98.6%
Prince Edward Island
77.5%
Saskatchewan
11.0%
Mississippi
99.6%
West Virginia
1.96%
Nebraska
75.9%
Texas
27.0%
Missouri
56.4%
Louisiana
98.6%
North Carolina
7.59%
Oregon
1.21%1.53%
New Brunswick
50.2%
Alabama
4.32%
New Mexico
4.90%2.15%
Kansas
1.62%5.11%
Wisconsin
12.5%1.43%
British Columbia
59.8%
Newfoundland and Labrador
5.25%
New Jersey
58.8%
South Carolina
30.0%2.54%
Michigan
16.1%16.3%
Alberta
6.33%
Connecticut
2.14%
Pennsylvania
11.6%
Colorado
2.33%2.58%
Nevada
1.63%2.87%
Georgia
2.57%17.9%
New York
3.15%
Maryland
34.3%
Québec
1.02%
Manitoba
2.62%
Oklahoma
1.97%2.69%
Tennessee
17.6%
Ontario
5.05%
California
4.23%1.35%
Arkansas
15.9%
South Dakota
10.3%6.62%
Ohio
15.0%
Indiana
11.6%
Minnesota
2.27%3.62%
Iowa
2.05%
Illinois
33.0%3.68%
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