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Summary
| Description |
English: Groundwater occurs in the saturated soil and rock below the water table. If the aquifer is shallow enough and permeable enough to allow water to move through it at a rapid-enough rate, then people can drill wells into it and withdraw water. The level of the water table can naturally change over time due to changes in weather cycles and precipitation patterns, streamflow and geologic changes, and even human-induced changes, such as the increase in impervious surfaces on the landscape.
The illustration has labels for the features "water table", "cone of depression", "well discharge", "confining unit", "drawdown", "recharge", and "precipitation". |
| Date | |
| Source | https://www.usgs.gov/media/images/cone-depression-pumping-a-well-can-cause-water-level-lowering |
| Author | Tara Gross |
Licensing
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:04, 24 March 2024 | | 1,200 × 896 (294 KB) | StereoFolic | Uploaded a work by Tara Gross from https://www.usgs.gov/media/images/cone-depression-pumping-a-well-can-cause-water-level-lowering with UploadWizard |
File usage
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