Skip to main content
  1. Water Mission Area National Spatial Data Infrastructure Datasets
  2. MODFLOW-2005 and SWI2 models for assessing groundwater availability in volcanic aquifers on Kaua'i, O'ahu, and Maui, Hawai'i

MODFLOW-2005 and SWI2 models for assessing groundwater availability in volcanic aquifers on Kaua'i, O'ahu, and Maui, Hawai'i

Dates

Release Date
2021-01-01
Start Date
2001-01-01
End Date
2010-12-31
Publication Date

Citation

Kolja, R. and Izuka, S.K., 2021, MODFLOW-2005 and SWI2 models for assessing groundwater availability in volcanic aquifers on Kaua'i, O'ahu, and Maui, Hawai'i: U.S. Geological Survey data release, https://doi.org/10.5066/P9K4DK2P.

Summary

Steady-state numerical groundwater-flow models were constructed for the islands of Kaua'i, O'ahu, and Maui, Hawai'i. Separate models were created for each island using MODFLOW-2005 (Harbaugh, 2005) with the Seawater Intrusion (SWI2) package (Bakker and others, 2013), which allows simulation of freshwater and saltwater in ocean-island aquifers. The purpose of the models is to enable quantification of the hydrologic effects of withdrawals and changes in climate. These effects include water-table depression, saltwater rise, and reduction of natural groundwater discharge to streams, springs, and the ocean. The effects can place limits on groundwater availability. This USGS data release contains all of the input and output files for the [...]

Contacts

Point of Contact :
Rotzoll, Kolja, NW-Pacific Island Region: Pacific Islands Water Science Center
Originator :
Rotzoll, Kolja, Izuka, Scot K.
Metadata Contact :
U.S. Geological Survey
SDC Data Owner :
Pacific Islands Water Science Center
USGS Mission Area :
Water Resources

Attached Files

Click on title to download individual files attached to this item.

sir2020-5126.xml
Original FGDC Metadata
View 		14.61 KB application/fgdc+xml
readme.txt 10.68 KB text/plain
modelgeoref.txt 802 Bytes text/plain
ancillary.zip 10.03 MB application/zip
bin.zip 4.23 MB application/zip
georef.zip 131.45 KB application/zip
model.zip 6.38 MB application/zip
output.zip 22.37 MB application/zip
source.zip 2.23 MB application/zip
sir2020-5126_thumbnail.jpg thumbnail 272.56 KB image/jpeg

Purpose

The groundwater flow models are designed to quantify the consequences of groundwater withdrawal that can limit the availability of fresh groundwater for human use in Hawaii. Withdrawal from wells causes decreases in groundwater discharge to streams and the ocean, lowering of the water table, and rise of saltwater. Limits placed on these effects, for example limiting reduction of discharge to streams to protect aquatic habitats or limiting saltwater rise to protect existing wells, can translate to limits on future groundwater availability. Groundwater availability can be further restricted if climate change causes reduction in groundwater recharge. Quantification of the impacts of withdrawals and climate change is essential for informing decisions related to groundwater availability in Hawaii. The development of the models in this data release are documented in the U.S. Geological Survey Scientific Investigations Report 2020-5126 (https://doi.org/10.3133/sir20205126).
Image of the model domain and active and inactive areas of the model.
Image of the model domain and active and inactive areas of the model.

Map

Map Preview

Communities

  • Model Data Management Function (MDMF)

Tags

Provenance

These data were originally released on the Water Mission Area National Spatial Data Infrastructure Node and were migrated to sciencebase.gov in 2023.

Additional Information

Identifiers

Type Scheme Key
DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9K4DK2P

Item Actions

View Item as ...

JSON ATOM ISO XML

Save Item as ...

JSON FGDC MODS XML ISO XML

View Item...

Metrics