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Groundwater Recharge

The USGS Pacific Islands Water Science Center conducts assessments of groundwater recharge in the State of Hawaiʻi and the U.S. Affiliated Pacific Islands. To estimate island-wide groundwater recharge, a water-budget model that uses a daily computational interval is typically developed for a variety of climate and land-cover scenarios.

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Groundwater Recharge in Hawaiʻi

Groundwater provides 99 percent of Hawai‘i’s drinking water and about 50 percent of all freshwater used in the State. Groundwater recharge is water derived from precipitation and other sources, such as irrigation and leakage from surface reservoirs, that moves through or bypasses the plant-soil system and replenishes aquifers. Groundwater availability in Hawai‘i is affected by changes in...
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Pacific Islands Water Science Center
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Groundwater Recharge in Hawaiʻi

Groundwater provides 99 percent of Hawai‘i’s drinking water and about 50 percent of all freshwater used in the State. Groundwater recharge is water derived from precipitation and other sources, such as irrigation and leakage from surface reservoirs, that moves through or bypasses the plant-soil system and replenishes aquifers. Groundwater availability in Hawai‘i is affected by changes in...
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