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La Sa Fua River near Umatac, Guam water level

River gauge, La Sa Fua River, Guam, United States

Directions

Normal for mid-October

Water level

11.19ft Down 0.20 ft over the last 24 hours

Flow
4.6 cfs
9 10 11 13

History

111213ftOct 16Oct 17Oct 18Oct 19Oct 20111213ftOct 16Oct 18Oct 20
Water level

What this means

Water levels are unremarkable at La Sa Fua River near Umatac, Guam, where the gauge shows 11.19 ft.

It is still going down, by 0.20 ft over the past 24 hours. The 30-day range is 10.92 ft – 12.91 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Compared with 5 years of daily readings for this time of year. How to read levels

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

Weather at the gauge

Rain in the last 3 days: 5.61 in. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 88° 80° – Wind 16 mph
21 Wed 89° 79° 0.22 in, 37% Wind 11 mph
22 Thu 89° 78° 0.10 in, 71% Wind 15 mph
23 Fri 87° 78° 0.09 in, 63% Wind 13 mph
24 Sat 89° 79° 0.13 in, 67% Wind 11 mph
25 Sun 89° 78° 0.13 in, 54% Wind 13 mph
26 Mon 88° 78° 0.09 in, 60% Wind 10 mph

Forecast: Open-Meteo

Sunrise 04:13 PM Sunset 04:01 AM Daylight 11 hr, 48 min Waxing gibbous 71%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Almagosa River near Agat, GuamRiver gauge, Almagosa River 50.5 cfs Very high −28.2 cfs 3.5 mi
Maulap River near Agat, GuamRiver gauge, Maulap River 8.7 cfs Normal −2.7 cfs 4.0 mi
Fena Dam Spillway near Agat, GuamReservoir, Fena Dam Spillway 0.20 ft Low −0.11 ft 4.6 mi
Ugum River above Talofofo Falls, near Talofofo, GuamRiver gauge, Ugum River 43.5 cfs Normal −18.9 cfs 4.9 mi

Questions and answers

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of La Sa Fua River near Umatac, Guam today?

On Oct 20, 2026, 04:15 PM EDT, the water level was 11.19 ft. Down 0.20 ft over the last 24 hours.

Is La Sa Fua River near Umatac, Guam rising or falling?

Down 0.20 ft over the last 24 hours.

Is the level of La Sa Fua River near Umatac, Guam normal?

Normal for mid-October. Compared with 5 years of daily readings for this time of year.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:16809600 (Agency page)
Coordinates
13.30694, 144.66442 (WGS84)
Vertical datum
LMSL
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 11.19 ft 2026-10-20 20:15 Provisional
Flow 4.6 cfs 2026-10-20 20:15 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

U.S. Geological Survey: La Sa Fua River near Umatac, Guam (usgs:16809600). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/guam/la-sa-fua-river-near-umatac-guam

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer