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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.

USGS 16704000 Wailuku River at Piihonua, HI

Hawaii County, Hawaii
Hydrologic Unit Code 20010000
Latitude  19°42'43.7", Longitude 155°09'02.7" NAD83
Drainage area 220  square miles
Contributing drainage area 148.6  square miles
Gage datum 1,090 feet above LMSL

Period of record
Begin Date End Date Count
1979-11-17 2025-08-13 213

 
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