dc.contributor.advisor |
Shamseldin, A |
en |
dc.contributor.author |
Wang, Boshi |
en |
dc.date.accessioned |
2015-10-21T03:46:31Z |
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dc.date.issued |
2015 |
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dc.identifier.citation |
2015 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/27273 |
en |
dc.description |
Full text is available to authenticated members of The University of Auckland only. |
en |
dc.description.abstract |
Artificial aquifer recharge is a proven technology of sustainable groundwater and surface water resource management by actively restoring groundwater beneath earth’s surface. The objective of this study is to explore the feasibility of implementing artificial aquifer recharge in the Horowhenua area by a numerical modelling approach. The Horowhenua area is part of the Manawatu-Wanganui Region and approximately 500 km north of Wellington. The increasing urbanisation and economic development has added considerable stress to the region’s water resources. Statics show that the groundwater and surface water intake have nearly doubled over the past decade. This increasing in water demand has raised concerns on the effect of such demand to surface water bodies that are in hydraulic connection with groundwater systems like Lake Horowhenua and Lake Papaitonga. Some monitoring bores around Lake Horowhenua and Lake Papaitonga showed trends of declining groundwater levels. The Horowhenua area covers a groundwater catchment of approximately 350 km2 with variable geological formation consists of a greywacke bedrock and covered by a complex structure of many alternating layers of last glacial sediments. These geological formations subsequently form a single, heterogeneous, anisotropic, hydraulically interconnected groundwater system that occurs in hydraulic continuity with surface water regimes. The Horowhenua groundwater system is predominately recharged by rainfall infiltration and drains towards the coast to the east. Groundwater flow regime in the area strongly resembles surface topography. A three-dimensional steady-state numerical groundwater model was developed using MODFLOW modelling software and Visual MODFLOW Flex pre and post processing interface. The numerical layers essentially represent principal geological units. All layers are assumed to be unconfined and hydraulically connected. The numerical model was calibrated using observed groundwater levels provided by Horizons. Additional recharge was applied to the Levin urban area to simulate the effect of artificial recharge using stormwater runoff. The simulation results suggest that artificial recharge can significantly increase groundwater levels and enhance stream baseflow at a regional scale. |
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dc.publisher |
ResearchSpace@Auckland |
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dc.relation.ispartof |
Masters Thesis - University of Auckland |
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dc.relation.isreferencedby |
UoA99264829613402091 |
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dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher. |
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dc.rights |
Restricted Item. Available to authenticated members of The University of Auckland. |
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dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.rights.uri |
http://creativecommons.org/licenses/by-nc-nd/3.0/nz/ |
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dc.title |
Groundwater Flow Modelling for Artificial Aquifer Recharge Feasibility Study in the Horowhenua Area |
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dc.type |
Thesis |
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thesis.degree.discipline |
Civil and Environmental Engineering |
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thesis.degree.grantor |
The University of Auckland |
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thesis.degree.level |
Masters |
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dc.rights.holder |
Copyright: The Author |
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pubs.elements-id |
502286 |
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pubs.record-created-at-source-date |
2015-10-21 |
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dc.identifier.wikidata |
Q112911111 |
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