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Streamflow Measurements for the Nation

! Streamflow measurement pages will be decommissioned in early 2026. Please find the modernized pages in WDFN that suit you best. Learn more about our modernization plans and timeline and new pages.

16809600 La Sa Fua River near Umatac, Guam



Guam, Guam
Hydrologic Unit Code 22010000
Latitude  13°18'25.0", Longitude -144°39'51.9" NAD83
Drainage area 1.03  square miles
Gage datum 120 feet above LMSL
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Graph of streamflow measurement data at USGS 16809600 La Sa Fua River near Umatac, Guam
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