La Sa Fua River near Umatac, Guam

La Sa Fua River GU USGS

La Sa Fua River near Umatac, Guam (16809600) is a real-time streamflow monitoring station on the La Sa Fua River in GU, operated by the U.S. Geological Survey. Riverbot tracks its streamflow and alerts anglers the moment flow and temperature hit their fishing window. 98 fish species are associated with this station in public fish records.

USGS site number
16809600
Operated by
U.S. Geological Survey
State
GU
Coordinates
13.3069, 144.6644

Live conditions & history

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Fish recorded near this station

Community observations nearby

La Sa Fua River Near Umatac, Guam has 98 fish species documented via iNaturalist research-grade observations within 10 km. These community-sourced records indicate fish presence in the vicinity.

Species include: Banded Sergeant (Abudefduf septemfasciatus), Scissortail Sergeant (Abudefduf sexfasciatus), Whitespotted Surgeonfish (Acanthurus guttatus), Dusky Surgeonfish (Acanthurus nigrofuscus), Mimic Surgeonfish (Acanthurus pyroferus), and 93 others.

Where these records come from

Evidence
Community observations nearby
Research-grade community observations (iNaturalist) recorded near this station, not a formal survey.
Records
98 species
from 200 individual records
Observed
Feb 7, 2026 – Aug 16, 2026
200 dated records

Sources