Lee, J.-J.J.-J.LeeCHEN-WUING LIUJang, C.-S.C.-S.JangLiang, C.-P.C.-P.Liang2018-09-102018-09-102008http://www.scopus.com/inward/record.url?eid=2-s2.0-50249148323&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/341570This work presented a probability map of groundwater resources for multi-purpose uses (irrigation, aquaculture and drinking water) of arsenic (As)-affected aquifers in the Lanyang Plain, northeastern Taiwan. The assessment was based on As and other several compounds and factors that adversely affect water-quality. Multiple-variable indicator kriging (MVIK) was adopted to evaluate numerous hydrochemical parameters for the three water-quality standards in Taiwan. Hydrochemical parameters of groundwater were classified into four main hazard categories - saline hazard, nitrogen hazard, As hazard and Fe-Mn hazard. Safe and potentially hazardous groundwater regions for multi-purpose use were delineated according to estimated probabilities by using MVIK. Analytical results for MVIK critical probability of >0.5 demonstrate that the proximal-fan, partial central distal-fan and mid-fan, and northern distal-fan aquifers complying with most water-quality standards are optimal zones for extracting safe groundwater. Notably, the deep aquifer has a high hazard rating and is less safe than the shallow aquifer. The Fe-Mn hazard in Lanyang Plain groundwater presents in most aquifers, and is partially combined with other hazards, such as the nitrogen hazard and the As hazard. A zonal management plan based on safe groundwater use is formulated to help local governments develop groundwater resources in the Lanyang Plain. © 2008 Elsevier B.V. All rights reserved.application/pdf841618 bytesapplication/pdfGroundwater quality; Hazard; Multi-purpose; Multiple-variable indicator kriging; Uncertainty[SDGs]SDG6Aquaculture; Aquifers; Arsenic; Arsenic compounds; Chlorine compounds; Extraction; Groundwater; Hazards; Hydrogeology; Landforms; Manganese; Manganese compounds; Nitrogen; Nonmetals; Parameter estimation; Potable water; Probability; Quality control; Random processes; Reusability; Risk assessment; Standards; Underground reservoirs; Water management; Analytical results; Drinking water; Estimated probabilities; Groundwater quality; Groundwater use; Hazard; Hazard rating; Hydrochemical parameters; Indicator kriging; Lanyang plain; Local governments; Management planning; Multi-purpose; Multiple-variable indicator kriging; Northeastern Taiwan; Quality standards; Shallow aquifers; Uncertainty; Groundwater resources; aquifer; arsenic; assessment method; classification; hydrochemistry; kriging; mapping method; probability; uncertainty analysis; water quality; Asia; Eurasia; Far East; Lanyang Plain; Taiwanjournal article10.1016/j.jhydrol.2008.07.015