Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing

Study region: A peatland watershed was constructed on a post-mined oil sands lease in Northern Alberta, Canada, with the intention of replicating the function of natural wetlands removed by surface mining. Study focus: Given the potential for moisture limited conditions due to the sub-humid regional...

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Autores principales:	Eric D. Kessel, Owen F. Sutton, Jonathan S. Price
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Recharge basins Reclamation Oil sands process-affected water Tailings sand Athabasca oil sands region Constructed wetland Physical geography GB3-5030 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/efc8e3eb87cc4254ad377bf74d1b7f7a
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spelling	oai:doaj.org-article:efc8e3eb87cc4254ad377bf74d1b7f7a2021-11-10T04:27:15ZPreferential recharge in a reclaimed tailings sand upland: Implications on solute flushing2214-581810.1016/j.ejrh.2021.100953https://doaj.org/article/efc8e3eb87cc4254ad377bf74d1b7f7a2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2214581821001828https://doaj.org/toc/2214-5818Study region: A peatland watershed was constructed on a post-mined oil sands lease in Northern Alberta, Canada, with the intention of replicating the function of natural wetlands removed by surface mining. Study focus: Given the potential for moisture limited conditions due to the sub-humid regional climate, ensuring sufficient water availability in these landscapes is a principal concern. This research demonstrates how small recharge basins can modify the hydrology to promote groundwater recharge critical for sustaining saturated conditions in a downgradient wetland. New hydrological insights for the region: Location was important in determining the efficacy of recharge basins. Specifically, basins placed at the confluence of two hillslopes detained substantial volumes of runoff due to large upslope areas, contributing ~30% of the groundwater budget to the fen, while only occupying 1% of the upland area. Basins situated near low relief hillslopes or altogether isolated from a hillslope did not detain appreciable runoff and therefore had a minor role in recharging groundwater. Groundwater in the vicinity and downgradient of active recharge basins had considerably lower solute concentrations because of dilution. This suggests that basins can not only enhance recharge within engineered landscapes, providing a consistent and focused supply of water to upland aquifers, but offer relatively fresh groundwater to downgradient ecosystems. This could ameliorate the impact of high salinity present in oil sands process-affected materials.Eric D. KesselOwen F. SuttonJonathan S. PriceElsevierarticleRecharge basinsReclamationOil sands process-affected waterTailings sandAthabasca oil sands regionConstructed wetlandPhysical geographyGB3-5030GeologyQE1-996.5ENJournal of Hydrology: Regional Studies, Vol 38, Iss , Pp 100953- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Recharge basins Reclamation Oil sands process-affected water Tailings sand Athabasca oil sands region Constructed wetland Physical geography GB3-5030 Geology QE1-996.5
spellingShingle	Recharge basins Reclamation Oil sands process-affected water Tailings sand Athabasca oil sands region Constructed wetland Physical geography GB3-5030 Geology QE1-996.5 Eric D. Kessel Owen F. Sutton Jonathan S. Price Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
description	Study region: A peatland watershed was constructed on a post-mined oil sands lease in Northern Alberta, Canada, with the intention of replicating the function of natural wetlands removed by surface mining. Study focus: Given the potential for moisture limited conditions due to the sub-humid regional climate, ensuring sufficient water availability in these landscapes is a principal concern. This research demonstrates how small recharge basins can modify the hydrology to promote groundwater recharge critical for sustaining saturated conditions in a downgradient wetland. New hydrological insights for the region: Location was important in determining the efficacy of recharge basins. Specifically, basins placed at the confluence of two hillslopes detained substantial volumes of runoff due to large upslope areas, contributing ~30% of the groundwater budget to the fen, while only occupying 1% of the upland area. Basins situated near low relief hillslopes or altogether isolated from a hillslope did not detain appreciable runoff and therefore had a minor role in recharging groundwater. Groundwater in the vicinity and downgradient of active recharge basins had considerably lower solute concentrations because of dilution. This suggests that basins can not only enhance recharge within engineered landscapes, providing a consistent and focused supply of water to upland aquifers, but offer relatively fresh groundwater to downgradient ecosystems. This could ameliorate the impact of high salinity present in oil sands process-affected materials.
format	article
author	Eric D. Kessel Owen F. Sutton Jonathan S. Price
author_facet	Eric D. Kessel Owen F. Sutton Jonathan S. Price
author_sort	Eric D. Kessel
title	Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
title_short	Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
title_full	Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
title_fullStr	Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
title_full_unstemmed	Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing
title_sort	preferential recharge in a reclaimed tailings sand upland: implications on solute flushing
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/efc8e3eb87cc4254ad377bf74d1b7f7a
work_keys_str_mv	AT ericdkessel preferentialrechargeinareclaimedtailingssanduplandimplicationsonsoluteflushing AT owenfsutton preferentialrechargeinareclaimedtailingssanduplandimplicationsonsoluteflushing AT jonathansprice preferentialrechargeinareclaimedtailingssanduplandimplicationsonsoluteflushing
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Preferential recharge in a reclaimed tailings sand upland: Implications on solute flushing

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