As part of USGS Coral Reef Project studies, the USGS has been heavily involved in efforts to improve the health and resilience of Maui's coral reef system, bringing expertise in mapping, circulation and sediment studies, and seismic surveys.
Overview
Maui is located 15 km (9 mi) east of Molokaʻi and 15 km northwest of Lānaʻi. Known as the Valley Isle, it encompasses 1883 sq km (727 sq mi), making it the second largest of the main eight Hawaiian Islands. A fringing reef surrounds much of the island. However much of the live coral growth can only be found on the leeward west coast where the reef is protected from waves by the surrounding islands. Reef growth is limited on the windward northeast coast due to wave impacts.
Motivation
Over the past two decades, there has been a notable change in seafloor-bottom type along west-central Maui, Hawaiʻi. Once dominated by abundant coral coverage, the area is now characterized by an increased abundance of turf algae and macroalgae. In an effort to improve the health and resilience of the coral reef system, the State of Hawaiʻi established the Kahekili Herbivore Fisheries Management Area. In addition, the U.S. Coral Reef Task Force (USCRTF) Watershed Partnership Initiative selected the Kaʻanapali region of west-central Maui as the site of the second national priority study area on which to focus its research and restoration efforts. The USGS has been involved heavily in these studies, bringing expertise in mapping, circulation and sediment studies, and seismic surveys. Other collaborators include the Environmental Protection Agency (EPA), NOAA, University of Hawaiʻi, University of Washington, University of California, Santa Cruz, and The Nature Conservancy.
The Hawaiian island of Maui is just one of the USGS Coral Reef Project's study locations.
Reef Hydrodynamics and Sediment Processes
Role of Reefs in Coastal Protection
Reef Resource Assessments - Planning for the Future
Hydrogeology and Reef Health
Climate Change and Land-use Histories
Maui data sets produced by the Coral Reef Project
Aerial imagery and structure-from-motion-derived shallow water bathymetry from a UAS survey of the coral reef off Waiakane, Molokai, Hawaii, June 2018
Coral geochemistry time series from Kahekili, west Maui
Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024)
Dynamically downscaled future wave projections from SWAN model results for the main Hawaiian Islands
Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment
Projected flooding extents and depths based on 10-, 50-, 100-, and 500-year wave-energy return periods, with and without coral reefs, for the States of Hawaii and Florida, the Territories of Guam, American Samoa, Puerto Rico, and the U.S. Virgin Islands,
Coral growth parameters and seawater chemistry from Kahekili, west Maui, Hawaii
Physics-based numerical circulation model outputs of ocean surface circulation during the 2010-2013 summer coral-spawning seasons in Maui Nui, Hawaii, USA
Publications on Maui, produced by the Coral Reef Project
The value of US coral reefs for flood risk reduction
The major coral reefs of Maui Nui, Hawai‘i—distribution, physical characteristics, oceanographic controls, and environmental threats
Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction
Coral skeleton δ15N as a tracer of historic nutrient loading to a coral reef in Maui, Hawaii
Carbonate system parameters of an algal-dominated reef along west Maui
Modeling fine-scale coral larval dispersal and interisland connectivity to help designate mutually-supporting coral reef marine protected areas: Insights from Maui Nui, Hawaii
Vulnerability of coral reefs to bioerosion from land-based sources of pollution
The use of passive membrane samplers to assess organic contaminant inputs at five coastal sites in west Maui, Hawaii
Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.
Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii
A Geochemical and Geophysical Assessment of Coastal Groundwater Discharge at Select Sites in Maui and O’ahu, Hawai’i
The effectiveness of coral reefs for coastal hazard risk reduction and adaptation
Below are news stories about our work in Maui
Below are partners associated with this project.
As part of USGS Coral Reef Project studies, the USGS has been heavily involved in efforts to improve the health and resilience of Maui's coral reef system, bringing expertise in mapping, circulation and sediment studies, and seismic surveys.
Overview
Maui is located 15 km (9 mi) east of Molokaʻi and 15 km northwest of Lānaʻi. Known as the Valley Isle, it encompasses 1883 sq km (727 sq mi), making it the second largest of the main eight Hawaiian Islands. A fringing reef surrounds much of the island. However much of the live coral growth can only be found on the leeward west coast where the reef is protected from waves by the surrounding islands. Reef growth is limited on the windward northeast coast due to wave impacts.
Motivation
Over the past two decades, there has been a notable change in seafloor-bottom type along west-central Maui, Hawaiʻi. Once dominated by abundant coral coverage, the area is now characterized by an increased abundance of turf algae and macroalgae. In an effort to improve the health and resilience of the coral reef system, the State of Hawaiʻi established the Kahekili Herbivore Fisheries Management Area. In addition, the U.S. Coral Reef Task Force (USCRTF) Watershed Partnership Initiative selected the Kaʻanapali region of west-central Maui as the site of the second national priority study area on which to focus its research and restoration efforts. The USGS has been involved heavily in these studies, bringing expertise in mapping, circulation and sediment studies, and seismic surveys. Other collaborators include the Environmental Protection Agency (EPA), NOAA, University of Hawaiʻi, University of Washington, University of California, Santa Cruz, and The Nature Conservancy.
The Hawaiian island of Maui is just one of the USGS Coral Reef Project's study locations.
Reef Hydrodynamics and Sediment Processes
Role of Reefs in Coastal Protection
Reef Resource Assessments - Planning for the Future
Hydrogeology and Reef Health
Climate Change and Land-use Histories
Maui data sets produced by the Coral Reef Project
Aerial imagery and structure-from-motion-derived shallow water bathymetry from a UAS survey of the coral reef off Waiakane, Molokai, Hawaii, June 2018
Coral geochemistry time series from Kahekili, west Maui
Cross-reef wave and water level data from coral reef environments (ver. 3.0, January 2024)
Dynamically downscaled future wave projections from SWAN model results for the main Hawaiian Islands
Waiakane, Molokai, HI, 2018 Coral Reef Circulation and Sediment Dynamics Experiment
Projected flooding extents and depths based on 10-, 50-, 100-, and 500-year wave-energy return periods, with and without coral reefs, for the States of Hawaii and Florida, the Territories of Guam, American Samoa, Puerto Rico, and the U.S. Virgin Islands,
Coral growth parameters and seawater chemistry from Kahekili, west Maui, Hawaii
Physics-based numerical circulation model outputs of ocean surface circulation during the 2010-2013 summer coral-spawning seasons in Maui Nui, Hawaii, USA
Publications on Maui, produced by the Coral Reef Project
The value of US coral reefs for flood risk reduction
The major coral reefs of Maui Nui, Hawai‘i—distribution, physical characteristics, oceanographic controls, and environmental threats
Rigorously valuing the role of U.S. coral reefs in coastal hazard risk reduction
Coral skeleton δ15N as a tracer of historic nutrient loading to a coral reef in Maui, Hawaii
Carbonate system parameters of an algal-dominated reef along west Maui
Modeling fine-scale coral larval dispersal and interisland connectivity to help designate mutually-supporting coral reef marine protected areas: Insights from Maui Nui, Hawaii
Vulnerability of coral reefs to bioerosion from land-based sources of pollution
The use of passive membrane samplers to assess organic contaminant inputs at five coastal sites in west Maui, Hawaii
Rigorously valuing the role of coral reefs in coastal protection: An example from Maui, Hawaii, U.S.A.
Observations of nearshore groundwater discharge: Kahekili Beach Park submarine springs, Maui, Hawaii
A Geochemical and Geophysical Assessment of Coastal Groundwater Discharge at Select Sites in Maui and O’ahu, Hawai’i
The effectiveness of coral reefs for coastal hazard risk reduction and adaptation
Below are news stories about our work in Maui
Below are partners associated with this project.