Irrigation Raises Sea Levels

A new study published in the journal Geophysical Research Letters indicates that irrigation raises sea levels.

The scientists calculated that irrigation and the subsequent runoff into the oceans accounted for 6% of the total rise in sea levels for 1900-2008. Since 1950, groundwater depletion has increased significantly.

During 2000-2008, sea level rose 3.1 millimeters per year.   Groundwater runoff accounted for 0.40 millimeters per year during that same time, 13% of the total sea level rise.

Image by kumaravel, used with Creative Commons license.

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Author: Heather Carr

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