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| Created: | Feb 08, 2023 at 5:02 a.m. | |
| Last updated: | Feb 08, 2023 at 5:03 a.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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Abstract
Accurate representation of artificial recharge is requisite to calibration of a ground water model of an unconfined aquifer for a semiarid or and site with a vadose zone that imparts significant attenuation of liquid transmission and substantial anthropogenic liquid discharges. Under such circumstances, artificial recharge occurs in response to liquid disposal to the vadose zone in areas that are small relative to the ground water model domain. Natural recharge, in contrast, is spatially variable and occurs over the entire upper boundary of a typical unconfined ground water model. An improved technique for partitioning artificial recharge from simulated total recharge for inclusion in a ground water model is presented. The improved technique is applied using data from the semiarid Hanford Site. From 1944 until the late 1980s, when Hanford's mission was the production of nuclear materials, the quantities of liquid discharged from production facilities to the ground vastly exceeded natural recharge. Nearly all hydraulic head data available for use in calibrating a ground water model at this site were collected during this period or later, when the aquifer was under the diminishing influence of the massive water disposals. The vadose zone is typically 80 to 90 in thick at the Central Plateau where most production facilities were located at this semiarid site, and its attenuation of liquid transmission to the aquifer can be significant. The new technique is shown to improve the representation of artificial recharge and thereby contribute to improvement in the calibration of a site-wide ground water model.
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Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1111/j.1745-6584.2007.00317.x |
| Depth | |
| Scale | 1 001 - 10 000 km² |
| Layers | |
| Purpose | |
| GroMoPo_ID | 225 |
| IsVerified | True |
| Model Code | |
| Model Link | https://doi.org/10.1111/j.1745-6584.2007.00317.x |
| Model Time | |
| Model Year | 2007 |
| Model Authors | Nichols, WE; Wurstner, SK; Eslinger, PW |
| Model Country | United States |
| Data Available | Report/paper only |
| Developer Email | will.nichols@pnl.gov; signe.wurstner@pnl.gov; paul.w.eslinger@pnl.gov |
| Dominant Geology | |
| Developer Country | USA |
| Publication Title | Vadose zone-attenuated artificial recharge for input to a ground water model |
| Original Developer | No |
| Additional Information | Paper decribes input to GW model |
| Integration or Coupling | |
| Evaluation or Calibration | |
| Geologic Data Availability |
How to Cite
This resource is shared under the Creative Commons Attribution CC BY.
http://creativecommons.org/licenses/by/4.0/
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