Canal Principal Diversion below Forebay, Isabela water level

Name: Canal Principal Diversion below Forebay, Isabela water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

Canal gauge, Canal Principal Diversion, Puerto Rico, United States

Directions

Latest reading

Water level

5.23ft Steady over the last 24 hours

Measured Oct 20, 2026, 12:30 AM AST (38 min ago)

Flow: 29.9 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

The latest canal level reported for Canal Principal Diversion below Forebay, Isabela is 5.23 ft. The agency publishes no normal range or warning level for this canal yet, so there is nothing to judge the number against.

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 5.16 ft and 5.24 ft.

Over the past seven days the change adds up to +0.04 ft.

The agency publishes no normal range for this gauge yet, so we show the trend only. How to read levels

Key numbers

Same day last year: 5.19 ft+0.04 ft
Lowest and highest in 30 days: 5.16 ft – 5.24 ft
Lowest and highest in 12 months: 4.18 ft – 5.26 ft

Weather at the gauge

Rain in the last 3 days: 0.25 in. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 86° 74° 0.10 in, 100% Wind 7 mph

20 Tue 85° 72° 0.13 in, 100% Wind 6 mph

21 Wed 85° 71° 0.09 in, 68% Wind 6 mph

22 Thu 87° 72° 0.29 in, 80% Wind 8 mph

23 Fri 84° 73° 0.17 in, 62% Wind 6 mph

24 Sat 86° 74° 0.12 in, 75% Wind 5 mph

25 Sun 80° 73° 0.14 in, 75% Wind 3 mph

Forecast: Open-Meteo

Sunrise 06:24 AM Sunset 06:03 PM Daylight 11 hr, 39 min First quarter 65%

Map

Other gauges on the Canal Principal Diversion

Gauge	Level	Compared with normal	24 hours	Distance
Canal Principal Diversion above Lago GuerreroCanal gauge, Canal Principal Diversion	23.8 cfs	Normal	−10.5 cfs	3.7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Canal De Moca above Lago Regulador E13 IsabelaCanal gauge, Canal De Moca	1.78 ft	Normal	±0	1.1 mi
Canal De Aguadilla above Lago Ramey, AguadillaCanal gauge, Canal De Aguadilla	1.68 ft	Normal	±0	7 mi
Rio Guajataca below Lago GuajatacaRiver gauge, Rio Guajataca	7.71 ft	Very high	+0.02 ft	7 mi
Canal De Derivacion at Lago De GuajatacaCanal gauge, Canal De Derivacion	3.40 ft	Normal	+0.01 ft	7 mi
Canal Moca above Aguadilla Plant, AguadillaCanal gauge, Canal Moca	1.26 ft	Normal	±0	8 mi
Rio Culebrinas at Highway 404 near MocaRiver gauge, Rio Culebrinas	11.64 ft	High	+0.03 ft	9 mi
Rio Culebrinas at Margarita Damsite near AguadaRiver gauge, Rio Culebrinas	15.96 ft	Very high	+1.72 ft	10 mi
Rio Grande De Anasco near San SebastianRiver gauge, Rio Grande De Anasco	3.37 ft	Normal	−2.05 ft	13 mi

Questions and answers

How does the Canal Principal Diversion below Forebay, Isabela compare with last year?

It is 0.04 ft higher than on the same day last year, when the reading was 5.19 ft.

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 Canal Principal Diversion below Forebay, Isabela today?

On Oct 20, 2026, 12:30 AM AST, the water level was 5.23 ft. Steady over the last 24 hours.

Is Canal Principal Diversion below Forebay, Isabela rising or falling?

Steady over the last 24 hours. Up 0.04 ft over the last 7 days.

Is the level of Canal Principal Diversion below Forebay, Isabela normal?

The agency publishes no normal range for this gauge yet, so we show the trend only.

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:182743067004200 (Agency page)
Coordinates: 18.46204, -67.01168 (WGS84)
Vertical datum: PRVD02
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	5.23 ft	2026-10-20 04:30	Provisional
Flow	29.9 cfs	2026-10-20 04:30	Provisional

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How to cite

U.S. Geological Survey: Canal Principal Diversion below Forebay, Isabela (usgs:182743067004200). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/canal-principal-diversion-below-forebay-isabela

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