Monitoring Data Available

Hui O Ka Wai Ola
Coastal Water Quality Data

Hui O Ka Wai Ola collects data for ocean salinity, pH, temperature, organic nutrients (nitrogen and phosphorous compounds), dissolved oxygen (DO), and turbidity. Some water samples are immediately tested at mobile labs, while others are processed for testing at University of Hawaiʻi.

PacIOOS Voyager
Display of Water Quality Data

Another way to visualize the Hui O Ka Wai Ola's coastal water quality results is through a viewer generated by PacIOOS Voyager. 

USGS Rainfall Gauge
Summit of Pu`u Kukui

Precipitation (real time & records) from the United States Geological Survey Pu`u Kukui Rain Gauge located at an altitude of 5,771 ft in West Maui, HI can be accessed through this site.  Current conditions as well as past precipitation can be graphed and downloaded.

Data Trends in Water Quality and Percent Live Coral Cover

Hui O Ka Wai Ola data through Dec.2020 showing a comparison of geomeans for turbidity (water clarity) and nitrates/nitrites relative to the Hawaii Department of Health state standards.  That is, the values on the y-axis show the number of times a parameter exceeds the state standards.  For example, Kahana Village located near the mouth of Kahana Stream has an average turbidity ~43 times the standard.

Long-term Percent Live Coral Cover Data

Click graphs for link to comprehensive 2015 DAR CRAMP report.
Read the latest report for more information on the Hui and additional results.
Long-term data set collected by DLNR-DAR to understand trends over time at set reef transects as a part of the Coral Reef Assessment and Monitoring Program (CRAMP) ​ created during 1997-98 by leading coral reef researchers, managers and educators in Hawaii.

Coming soon

Commision of Water Resource Management (CWRM) Streamflow

In recent years, CWRM has installed additional stream gauges in West Maui to help determine flow, and in some areas, turbidity.  This data will be made available online soon.
CWRM hydrologist setting up stream monitoring in West Maui.