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Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers

IAHS-AISH Publication
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Abstract

Groundwater in East Maui, Hawaii is traditionally described as a series of discrete aquifers perched on low-permeability units underlain by a basal lens with heads of about 2-3 m. An alternative concept, a fully saturated aquifer to as much as 1400 m elevation, was investigated using a numerical model with various horizontal hydraulic conductivity values and anisotropy ratios. Results indicate that horizontal hydraulic conductivity values between about 0.08 and 1.0 m per day and anisotropy ratios between 1:1 and 100:1 will produce simulated water tables that match observed water tables at 400-1400 m elevation. These values of hydraulic conductivity are consistent with available field data for hydraulic conductivity.Groundwater in East Maui, Hawaii is traditionally described as a series of discrete aquifers perched on low-permeability units underlain by a basal lens with heads of about 2-3 m. An alternative concept, a fully saturated aquifer to as much as 1400 m elevation, was investigated using a numerical model with various horizontal hydraulic conductivity values and anisotropy ratios. Results indicate that horizontal hydraulic conductivity values between about 0.08 and 1.0 m per day and anisotropy ratios between 1:1 and 100:1 will produce simulated water tables that match observed water tables at 400-1400 m elevation. These values of hydraulic conductivity are consistent with available field data for hydraulic conductivity.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Numerical modelling of vertically extensive groundwater bodies in Maui, Hawaii: An alternative to perched aquifers
Series title IAHS-AISH Publication
Issue 253
Year Published 1998
Language English
Publisher IAHS
Publisher location Wallingford, United Kingdom
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title IAHS-AISH Publication
First page 167
Last page 174