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Ugum River above Talofofo Falls, near Talofofo, Guam water level

River gauge, Ugum River, Guam, United States

Directions

Normal for mid-October

Water level

1.61ft Down 0.14 ft over the last 24 hours

Flow
41.8 cfs
0 1 3 4

History

246ftOct 16Oct 17Oct 18Oct 19Oct 21246ftOct 16Oct 18Oct 21
Water level

What this means

The Ugum River above Talofofo Falls, near Talofofo, Guam is at 1.61 ft, in the normal range for mid-October.

It has dropped 0.14 ft over the past 24 hours. In the last month it has stayed between 1.51 ft and 5.74 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

Floating and fishing near Ugum River above Talofofo Falls, near Talofofo, Guam

Normal flows mean predictable rapids and good access at most put-ins.

Weather at the gauge

Rain in the last 3 days: 1.36 in. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 81° 78° 2.30 in, 100% Wind 45 mph
19 Mon 84° 77° 0.77 in, 100% Wind 25 mph
20 Tue 87° 77° 0.14 in, 64% Wind 14 mph
21 Wed 88° 78° 0.05 in, 31% Wind 13 mph
22 Thu 86° 75° 0.24 in, 59% Wind 19 mph
23 Fri 86° 75° 0.20 in, 67% Wind 14 mph
24 Sat 87° 79° 0.17 in, 84% Wind 15 mph

Forecast: Open-Meteo

Sunrise 04:13 PM Sunset 04:00 AM Daylight 11 hr, 47 min Waxing gibbous 73%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Almagosa River near Agat, GuamRiver gauge, Almagosa River 48.4 cfs Very high −22.8 cfs 3.2 mi
Fena Dam Spillway near Agat, GuamReservoir, Fena Dam Spillway 0.18 ft Low −0.09 ft 3.3 mi
Maulap River near Agat, GuamRiver gauge, Maulap River 8.2 cfs Normal −2.2 cfs 3.4 mi
La Sa Fua River near Umatac, GuamRiver gauge, La Sa Fua River 4.2 cfs Normal −2.7 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 Ugum River above Talofofo Falls, near Talofofo, Guam today?

On Oct 20, 2026, 10:05 PM EDT, the water level was 1.61 ft. Down 0.14 ft over the last 24 hours.

Is Ugum River above Talofofo Falls, near Talofofo, Guam rising or falling?

Down 0.14 ft over the last 24 hours.

Is the level of Ugum River above Talofofo Falls, near Talofofo, 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:16854500 (Agency page)
Coordinates
13.32242, 144.73614 (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 1.61 ft 2026-10-21 02:05 Provisional
Flow 41.8 cfs 2026-10-21 02:05 Provisional

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How to cite

U.S. Geological Survey: Ugum River above Talofofo Falls, near Talofofo, Guam (usgs:16854500). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/guam/ugum-river-above-talofofo-falls-near-talofofo-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