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| Type: | Resource | |
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| Created: | Apr 13, 2023 at 1:46 p.m. | |
| Last updated: | Apr 13, 2023 at 1:46 p.m. | |
| Citation: | See how to cite this resource |
| Sharing Status: | Public |
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Abstract
This paper aims to contribute to understanding the importance of four factors on the determination of sustainable yields: (i) aquifer properties; (ii) temporal distribution of recharge; (iii) temporal distribution of groundwater pumping; and (iv) spatial distribution of pumping wells. It is important to comprehend how the present-day and future vulnerability of groundwater systems to pumping activities depend on these critical factors and what the risks are of considering sustainable yield as a fixed percentage of mean annual recharge (MAR). A numerical model of the QuerencaSilves aquifer in Portugal is used to develop hypothetical scenarios with which these factors are studied. Results demonstrate the aquifer properties, particularly the storage coefficient, have an important role in determining the resilience of an aquifer and therefore to which degree it is dependent on the spatial and temporal distribution of abstraction and recharge, as well as the occurrence of extreme events. Sustainable yields are determined for the developed scenarios based on specific criteria rather than a fraction of MAR. Under simplified current recharge and abstraction conditions, the sustainable yield was determined at approximately 73% of MAR or 76 million?m3. When considering a concentration of rainfall in time, as predicted by climate scenarios for the region, sustainable yield could drop to ca 70% of MAR. However, a more even distribution of pumping volumes throughout the year could increase this value. The location of the pumping wells is seen to affect the distribution of hydraulic heads in the aquifer, albeit without significant changes in sustainable yield. Copyright (c) 2011 John Wiley & Sons, Ltd.
Subject Keywords
Coverage
Spatial
Content
Additional Metadata
| Name | Value |
|---|---|
| DOI | 10.1002/hyp.8353 |
| Depth | N/A |
| Scale | 101 - 1 000 km² |
| Layers | 1 |
| Purpose | Groundwater resources, Scientific investigation (not related to applied problem), Decision support |
| GroMoPo_ID | 2008 |
| IsVerified | True |
| Model Code | Unknown |
| Model Link | https://doi.org/10.1002/hyp.8353 |
| Model Time | 2001-2009 |
| Model Year | 2012 |
| Creator Email | kcompare@fsu.edu |
| Model Country | Portugal |
| Data Available | Report/paper only |
| Developer Email | rui.hugman@ist.utl.pt |
| Dominant Geology | Carbonate (including karst) |
| Developer Country | Portugal |
| Publication Title | Influence of aquifer properties and the spatial and temporal distribution of recharge and abstraction on sustainable yields in semi-arid regions |
| Original Developer | No |
| Additional Information | N/A |
| Integration or Coupling | None of the above |
| Evaluation or Calibration | Dynamic water levels |
| Geologic Data Availability | No |
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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