Please use this identifier to cite or link to this item: http://hdl.handle.net/10125/61972

Geophysical survey, ground water evaluation, Ulupalakua Ranch, Maui, Hawaii

File Size Format  
1990-GeophysicalSurvGrndWtrEvalUlupalakua.pdf 1.67 MB Adobe PDF View/Open

Item Summary

Title:Geophysical survey, ground water evaluation, Ulupalakua Ranch, Maui, Hawaii
Authors:Nance, Tom
Keywords:groundwater
TDEM
Ulupalakua
Maui
Hawaii
LC Subject Headings:Geology--Hawaii
Groundwater--Hawaii
Water-supply--Hawaii
Geology
Groundwater
show 1 moreWater-supply
show less
Date Issued:20 Jun 1990
Publisher:Blackhawk Geosciences, Inc.
Tom Nance Water Resource Engineering
Abstract:The general objective of the geophysical survey at the Ulupalakua Ranch property was to assist in characterizing the hydrologic regime in the study area. The volcanic rocks are generally highly permeable and this allows rainwater to percolate with little impedance directly downward through the island mass. Ground water resources can occur on the Island of Hawaii basically in two modes:
• In a basal mode, where a lens-shaped body of fresh water floats on saline water, and
• In a high-level mode, where the ground water occurrence is controlled by subsurface damming structures.
The surficial volcanic rocks are generally highly permeable and this allows rainwater to infiltrate directly downward through the island mass.
Previous TDEM surveys on the Hawaiian Islands have reliably mapped the boundary between fresh water in the basal mode and high-level water occurrences. Geophysical surveys, combined with other hydrogeologic information, are used to provide optimum locations for well placement and completion depths.
Pages/Duration:23 pages
URI:http://hdl.handle.net/10125/61972
Appears in Collections: Tom Nance Water Resource Engineering
Maui


Please email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.

Items in ScholarSpace are protected by copyright, with all rights reserved, unless otherwise indicated.