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Surface Water

Surface water is a valued resource as well as a threat to human lives and property in the State of Hawaiʻi and in many of the U.S. Affiliated Pacific Islands. Surface-water resources are of significant economic, ecologic, cultural, and aesthetic importance. Streams supply water for agriculture and are the main source of drinking water in some places. The USGS Pacific Islands Water Science Center is focused on developing new and innovative science to evaluate and answer complex questions related to managing and protecting surface-water resources. We also operate flood-alert systems to help protect life and property.

Browse USGS Pacific Islands Water Science Center science related to:

Streamflow-Availability Assessments

Streamflow Characteristics‒Low Flows

Streamflow Characteristics‒Flood Flows

Streamflow Monitoring

Groundwater and Surface-Water Interaction

Water Use