Hydrogeology
Study of the distribution and movement of groundwater
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We include updates on Aquifer, Water table, Hydrosphere, Porosity, Karst spring, Phreatic zone, Saltwater intrusion, Vadose zone, Saline seep, Capillary fringe, Groundwater sapping, Throughflow, Interflow, Mud-puddling, Earth's critical zone, Groundwater model ... and more.
| February 27 2025 |
MODFLOW
Preliminary-beta release of MODFLOW-OWHM version 2.3.1b-4.
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| January 15 2024 |
MODFLOW
USGS released the Approved Software version 2.3.0 of MODFLOW-OWHM.
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| July 30 2021 |
MODFLOW
Release of MODFLOW version 6.2.2, which represented the current version at the time of documentation. This version supports structured/unstructured grids, Newton-Raphson formulation, and includes a Groundwater Transport (GWT) model for three-dimensional solute transport.
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| 2020 |
MODFLOW
Release of MODFLOW-OWHM Version 2, a major rewrite of MF-OWHM1, designed as an integrated hydrologic model for analyzing conjunctive-use management.
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| 2020 |
MODFLOW
Release of MF-OWHM Version 2, a major rewrite of the previous MODFLOW-OWHM1 version, designed as an integrated hydrologic model for water management and sustainability analysis.
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| 2017 |
MODFLOW
MODFLOW 6 (MF6) was first released, representing a complete rewrite of MODFLOW using an object-oriented programming paradigm in Fortran. This version integrated capabilities from previous MODFLOW versions including MODFLOW-NWT, MODFLOW-USG, and MODFLOW-LGR.
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| 2016 | The United States Environmental Protection Agency (EPA) released a comprehensive report concluding that drinking water can be contaminated by hydraulic fracturing (fracking), which represented a significant reversal of their previous policy stance following a $29 million scientific study on the effects of fracking on local drinking water. |
| 2015 | Anderson, Woessner, and Hunt published the 2nd Edition of 'Applied Groundwater Modeling', updating the first edition with new examples, model calibration insights, and online Python scripts. |
| September 2014 | California passed the Sustainable Groundwater Management Act, requiring users to manage groundwater appropriately and recognizing its connection to surface water systems. |
| 2010 | In the United States, 22 percent of freshwater used came from groundwater, with the remaining 78 percent sourced from surface water. |
| 2010 | US groundwater consumption analysis revealed that 22 percent of freshwater used in the country came from groundwater, with the remaining 78 percent sourced from surface water. |
This contents of the box above is based on material from the Wikipedia articles MODFLOW & Hydrogeology, which are released under the Creative Commons Attribution-ShareAlike 4.0 International License.