America's water: Agricultural water demands and the response of groundwater
Abstract Agricultural, industrial, and urban water use in the conterminous United States (CONUS) is highly dependent on groundwater that is largely drawn from nonsurficial wells (>30 m). We use a Demand‐Sensitive Drought Index to examine the impacts of agricultural water needs, driven by low prec...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2016-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069797 |
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| author | M. Ho V. Parthasarathy E. Etienne T. A. Russo N. Devineni U. Lall |
| author_facet | M. Ho V. Parthasarathy E. Etienne T. A. Russo N. Devineni U. Lall |
| author_sort | M. Ho |
| collection | DOAJ |
| description | Abstract Agricultural, industrial, and urban water use in the conterminous United States (CONUS) is highly dependent on groundwater that is largely drawn from nonsurficial wells (>30 m). We use a Demand‐Sensitive Drought Index to examine the impacts of agricultural water needs, driven by low precipitation, high agricultural water demand, or a combination of both, on the temporal variability of depth to groundwater across the CONUS. We characterize the relationship between changes in groundwater levels, agricultural water deficits relative to precipitation during the growing season, and winter precipitation. We find that declines in groundwater levels in the High Plains aquifer and around the Mississippi River Valley are driven by groundwater withdrawals used to supplement agricultural water demands. Reductions in agricultural water demands for crops do not, however, lead to immediate recovery of groundwater levels due to the demand for groundwater in other sectors in regions such as Utah, Maryland, and Texas. |
| format | Article |
| id | doaj-art-6ce9faec7e774489831a996abc23b082 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-6ce9faec7e774489831a996abc23b0822025-08-20T03:10:28ZengWileyGeophysical Research Letters0094-82761944-80072016-07-0143147546755510.1002/2016GL069797America's water: Agricultural water demands and the response of groundwaterM. Ho0V. Parthasarathy1E. Etienne2T. A. Russo3N. Devineni4U. Lall5Columbia Water Center Columbia University New York New York USAColumbia Water Center Columbia University New York New York USADepartment of Civil Engineering, Center for Water Resources and Environmental Research, NOAA Cooperative Remote Sensing Science and Technology Center City University of New York (City College) New York New York USAColumbia Water Center Columbia University New York New York USADepartment of Civil Engineering, Center for Water Resources and Environmental Research, NOAA Cooperative Remote Sensing Science and Technology Center City University of New York (City College) New York New York USAColumbia Water Center Columbia University New York New York USAAbstract Agricultural, industrial, and urban water use in the conterminous United States (CONUS) is highly dependent on groundwater that is largely drawn from nonsurficial wells (>30 m). We use a Demand‐Sensitive Drought Index to examine the impacts of agricultural water needs, driven by low precipitation, high agricultural water demand, or a combination of both, on the temporal variability of depth to groundwater across the CONUS. We characterize the relationship between changes in groundwater levels, agricultural water deficits relative to precipitation during the growing season, and winter precipitation. We find that declines in groundwater levels in the High Plains aquifer and around the Mississippi River Valley are driven by groundwater withdrawals used to supplement agricultural water demands. Reductions in agricultural water demands for crops do not, however, lead to immediate recovery of groundwater levels due to the demand for groundwater in other sectors in regions such as Utah, Maryland, and Texas.https://doi.org/10.1002/2016GL069797drought indexgroundwater depletion |
| spellingShingle | M. Ho V. Parthasarathy E. Etienne T. A. Russo N. Devineni U. Lall America's water: Agricultural water demands and the response of groundwater Geophysical Research Letters drought index groundwater depletion |
| title | America's water: Agricultural water demands and the response of groundwater |
| title_full | America's water: Agricultural water demands and the response of groundwater |
| title_fullStr | America's water: Agricultural water demands and the response of groundwater |
| title_full_unstemmed | America's water: Agricultural water demands and the response of groundwater |
| title_short | America's water: Agricultural water demands and the response of groundwater |
| title_sort | america s water agricultural water demands and the response of groundwater |
| topic | drought index groundwater depletion |
| url | https://doi.org/10.1002/2016GL069797 |
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