Maps

Wellhead Zones

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WUDR

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Observation Wells

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System Network

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Production Wells

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Surface Hydrology

About This map shows the plateau basins with their CHamoru names. Other Versions Click on the icon to view the LiDAR Imagery version of the

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Nitrate-N and Sources

About This map illustrates the nitrate concentrations in production wells. The contents of this analysis overlays the map of the Northern Guam Lens Aquifer (NGLA).

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NGLA Map

About The Northern Guam Lens Aquifer (NGLA) is Guam’s major source of utility water, from which military and government of Guam draw up to 90%

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NGLA Maps

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Maps by Organizations