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Water Resources of the Pacific Islands
Aloha! Welcome to the USGS Web page for the water resources of Hawaii and the Pacific area. This is your direct link to water-resource information and products for the State of Hawaii, the U.S. Territories of Guam and American Samoa, the U.S. Commonwealth of the Northern Mariana Islands, the Republic of Palau, the Republic of the Marshall Islands, and the Federated States of Micronesia.
Current Streamflow Conditions in Hawaii
Kauai and Oahu Floods, April 2018
Synoptic Groundwater-Level Measurements
USGS Water Availability and Use Science Program
Previous Featured Topics
Wailuku River Flood, Sept. 2016
Hydrologic Conditions, State of Hawaii, 2015
Hydrologic Conditions, Iao and Waihee Aquifers, Maui, 2015
Data-Collection Sites, Hawaii, 2013
Data-Collection Sites, Guam, 2013
Iao and Waihee Hydrologic Conditions, 1985-2013
Windward Oahu Flood, June 2011
West Hawaii Hydrologic Conditions, 2010 Pearl Harbor Springs Discharges:
2006 | 2007 | 2008 | 2009
Streamflow Measurements to Identify Gaining and Losing Stream Reaches, 2006
Flow Statistics for USGS Stream Gages, 1909-2005
Guam Rainfall and Deep Monitoring Well Data, 2004-2005
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Scientific Investigations Report 2017-5093
Fena Valley Reservoir watershed and water-balance model updates and expansion of watershed modeling to southern Guam.
Scientific Investigations Report 2017-5042
Measuring surface-water loss in Honouliuli Stream near the ‘Ewa Shaft, O‘ahu, Hawai‘i.
Scientific Investigations Report 2016-5103
Low-Flow Characteristics for Streams on the Islands of Kaua‘i, O‘ahu, Moloka‘i, Maui, and Hawai‘i, State of Hawai‘i.
Scientific Investigations Report 2015-5164
Volcanic Aquifers of Hawai‘i—Hydrogeology, Water Budgets, and Conceptual Models.
Scientific Investigations Report 2015-5128
Storage capacity of the Fena Valley Reservoir, Guam, Mariana Islands, 2014.
Scientific Investigations Report 2015-5010
Spatially Distributed Groundwater Recharge for 2010 Land Cover Estimated Using a Water-Budget Model for the Island of O‘ahu, Hawai‘i.
Scientific Investigations Report 2014-5158
Baseline Water-Quality Sampling to Infer Nutrient and Contaminant Sources at Kaloko-Honokōhau National Historical Park, Island of Hawai‘i, 2009.
Scientific Investigations Report 2014-5168
Spatially Distributed Groundwater Recharge Estimated Using a Water-Budget Model for the Island of Maui, Hawai‘i, 1978–2007.
Ground Water on Tropical Pacific Islands—Understanding a Vital Resource.