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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 132731144423801 Upper Asan River at Asan, Guam


Guam, Guam
Hydrologic Unit Code 22010000
Latitude  13°27'30.8", Longitude -144°42'37.8" NAD83
Drainage area 0.258  square miles
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Meas.
Number
  Date       Time Time
Datum
Measurement
Used?
  Who Measuring
Agency
Stream
flow
(ft3/s)
Gage
Height
(ft)
GH
Change
(ft)
Meas.
Duration
(hr)
Meas.
Rated
  Control Flow
Adjust.
Code
 
72012-01-16 14:15GSTYesCWY/RBCUSGS4.101.62 FairClearNONE
62011-10-11 15:25GSTYesCWY/BHSUSGS5.521.70-0.05 FairUnspecifedNONE
52011-10-11 14:54GSTYesCWY/BHSUSGS9.551.85-0.09 FairUnspecifedNONE
42011-10-11 14:24:30GSTYesCWY/BHSUSGS19.42.12-0.12 FairUnspecifedNONE
32011-07-04 13:50GSTYesCWY/DCNUSGS0.351.35 Fair NONE
22011-04-12 13:18GSTYesVEK/CWYUSGS0.201.330.00 FairClearNONE
12011-04-12 13:08:30GSTYesVEK/CWYUSGS0.191.330.000.10FairClearNONE