Pacific Islands Water Science Center
Data and Tools
USGS water data in the Pacific Islands.
- Hawaiʻi
- Guam
- Commonwealth of the Northern Mariana Islands
- American Samoa
- Republic of the Marshall Islands
- Federated States of Micronesia
- Republic of Palau
Search for sites and data using the NWIS Mapper which is the map interface to locations of sites with USGS water data.
Land-Cover Map for the Island of Maui, Hawaii, circa 2017 (version 1.1, February 2018)
This dataset describes land cover and vegetation for the island of Maui, Hawaii, circa 2017, hereinafter the 2017 land-cover map. The 2017 land-cover map is a modified version of the dataset titled "Mean annual water-budget components for the Island of Maui, Hawaii, 1978-2007" by Johnson (2014), hereinafter the 2010 land-cover map. The 2010 land-cover map was generated by intersecting (merging...
Mean annual water-budget components for the Island of Maui, Hawaii, for average climate conditions, 1978-2007 rainfall and 2010 land cover (version 2.0)
The shapefile associated with this metadata file represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Maui, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of average climate conditions (1978–2007 rainfall) and 2010 land cover, as described in USGS SIR 2
Mean annual water-budget components for the Island of Maui, Hawaii, for predevelopment conditions, 1978–2007 rainfall and 1870 land cover (version 2.0)
The shapefile associated with this metadata file represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Maui, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of predevelopment conditions (1978–2007 rainfall and 1870 land cover), as described in USGS Scientific...
Mean annual water-budget components for the Island of Maui, Hawaii, for current conditions, 2001-10 rainfall and 2001-10 land cover (version 2.0)
The shapefile associated with this metadata file represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Maui, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of current conditions (2001-10 rainfall and 2001-10 land cover), as described in USGS Scientific Investiga
Mean annual water-budget components for the Island of Maui, Hawaii, for predevelopment conditions, 1978–2007 rainfall and 1870 land cover (version 2.0)
The shapefile associated with this metadata file represents the spatial distribution of mean annual water-budget components, in inches, for the Island of Maui, Hawaii. The water-budget components in the shapefile were computed by a water-budget model for a scenario representative of predevelopment conditions (1978–2007 rainfall and 1870 land cover), as described in USGS Scient
Southern Guam watershed model, PRMS_2016
The PRMS_2016 folder contains the input files needed to run each of the modeled regions in southern Guam, the calibration data files, and a README_PRMS_2016.txt document that describes the contents of this archive and the execution of the model batch files.
Hydrologic Response Units (HRUs) for the Southern Guam watershed model, PRMS_2016
The hydrologic response units (HRUs) available here were used in the Precipitation Runoff Modeling System (PRMS) of southern Guam documented by Rosa and Hay (2017). A Geographic Information System (GIS) file for the HRUs is provided as a shapefile with attributes ParentHRU, Region, and RegionHRU identifying the numbering convention used in the PRMS_2016 southern Guam model par
Stream Segments for the southern Guam watershed model, PRMS_2016
The stream segments available here were used in the Precipitation Runoff Modeling System (PRMS) of southern Guam documented by Rosa and Hay (2017). A Geographic Information System (GIS) file for the stream segments is provided as a shapefile with attributes ParentSeg, Region, and RegionSeg identifying the numbering convention used in the PRMS_2016 southern Guam model parameter fil
Fena Valley Reservoir water-balance model, FVR_2016
The FVR_2016 folder contains the input files needed to run the Fena Valley Reservoir water-balance model and a README_FVR_2016.txt document that describes the contents of this archive and the execution of the water-balance model.
Hawaiʻi Rainfall--current conditions
Continuously recording rainfall sites utilize equipment that automatically record and store the amount of rainfall at specific intervals. Many sites are equipped with telemetry so that information can be electronically transmitted and displayed on the internet in real time.
Hawaiʻi Water Quality--current conditions
Suspended-sediment concentrations are determined from samples collected by an autosampler or collected manually.
Hawaiʻi Groundwater--current conditions
At some sites, groundwater levels in wells are manually measured, using steel or electrical tapes or pressure transducers. Other sites utilize electronic equipment to record and store the water levels at specific intervals. Some sites are equipped with telemetry so that information can be electronically transmitted and displayed in real-time on the internet.