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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
First page:
167
Last page:
174
Number of Pages:
8