National Park Service

Pacific Island Network (PACN)

Water Quality Monitoring

Sampling an odd water event at Kalaupapa NHP
Sampling an odd water event at Kalaupapa NHP

Features & Briefs

Monitoring Reports

Monitoring Protocol

For more information contact: David Raikow

Monitored at:

All PACN monitored parks except Hawaiʻi Volcanoes National Park

Description & Rationale

Video: Island Water - Water Quality

The quality of surface waters, marine waters, and groundwater is critical to the functioning of ecosystems across the Pacific islands. National Park Service management policies mandate that parks determine the quality of their water resources, strive to avoid human-caused pollution occurring within and outside of park boundaries, and perpetuate surface waters and groundwaters as integral components of park aquatic and terrestrial systems.

All Pacific island national parks are also concerned about effects of adjacent land uses and increasing development in watersheds connected to the parks' marine, freshwater, and groundwater resources.

The four core parameters chosen for monitoring by the NPS Water Resources Division (temperature, conductivity/salinity, pH, and dissolved oxygen) provide baseline data for water quality assessment. In addition, turbidity, total nitrate, total nitrogen, total phosphorous, and chlorophyll are monitored by the PACN for their ecological significance.

Monitoring Objectives

  1. Determine the range and spatial variance on an annual basis of temperature, pH, salinity/conductivity, dissolved oxygen, turbidity, total nitrogen, total phosphorous, total nitrate, and chlorophyll in coastal marine waters, streams, wetlands, and anchialine pools.
  2. Determine the temporal (events, diurnal, seasonal, annual, decadal) and spatial trends, for temperature, pH, conductivity, and dissolved oxygen in coastal marine waters, streams, wetlands, and anchialine pools.

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Last Updated: May 12, 2017 Contact Webmaster