Rio Yauco above Diversion Monserrate near Yauco water level

Name: Rio Yauco above Diversion Monserrate near Yauco water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Rio Yauco, Puerto Rico, United States

Directions

Very low for late October

Water level

1.74ft Down 0.61 ft over the last 24 hours

Measured Oct 21, 2026, 03:30 AM AST (1 hour ago)

Flow: 10.7 cfs

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %) Minor flood stage

What this means

The Rio Yauco above Diversion Monserrate near Yauco is running far below normal at 1.74 ft.

The median for late October is 2.90 ft, based on 23 years of readings, so the river stage is 1.16 ft below typical. It is 6.76 ft below the flood stage of 8.50 ft. On the same day last year the reading was 2.02 ft, a difference of −0.28 ft.

It has dropped 0.61 ft over the past 24 hours. Without real rain upstream, that is unlikely to change quickly.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 23 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 2.90 ft1.16 ft below the median for this date
Normal for this date: 2.06 ft – 3.82 ft8 years in 10 fall in this range (23 years of records)
Same day last year: 2.02 ft−0.28 ft
Lowest and highest in 30 days: 1.30 ft – 3.61 ft
Lowest and highest in 12 months: 1.24 ft – 3.25 ft
Highest on record: 12.03 ftMay 1, 2025

Floating and fishing near Rio Yauco above Diversion Monserrate near Yauco

Low water exposes gravel bars that make good wading access, but some boat ramps may be left high and dry.

Flood stage here is 8.50 ft, 6.76 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

13.00 ft: The flood waters could reach Ernesto Ramos Antonini Specialized School of Fine Arts. Flood water will reach Sector Chichamba (18.0386, -66.84364); the roads will become impassable with water entering the low level structures of about 11 houses close to the river banks. -erg 05/2025
12.00 ft: PR-335 in Barrio Barinas will be extensively flooded. The road and the access to several houses will be impassable.
11.50 ft: Flooding will begin to impact Urb. Luchetti. Calle Marginal and Calle 1 will become impassable, with about a foot of water accumulated. The water will not reach the houses. At the other side of the river, flooding will impact the lowest portion of Calle del Rio. The water will flood PR-127 from Urb. Luchetti toward Las Letras de Yauco. Flood waters will also reach PR-335, intersection with PR-3335, next to Guayanilla.
9.00 ft: PR-127 in Yauco becomes impassable. - erg 05/2025
8.50 ft: Flooding along PR-335, near the confluence of Quebrada Berrenchin and near the Planta de Tratamiento de Yauco. The road will become impassable.
1.74 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Rank	Level	Date
1	12.03 ft	May 1, 2025
2	9.83 ft	August 31, 1979
3	9.47 ft	November 13, 2024
4	9.03 ft	March 24, 2026
5	8.97 ft	September 12, 1982
6	8.56 ft	August 30, 2025
7	8.29 ft	August 14, 2024
8	7.95 ft	April 21, 1983
9	6.49 ft	September 25, 1981
10	6.22 ft	November 2, 1977

Weather at the gauge

Rain in the last 3 days: 0.24 in. Rain that falls upstream can take hours or days to show up at a river gauge.

21 Wed 85° 73° 0.13 in, 69% Wind 8 mph

22 Thu 83° 74° 0.17 in, 71% Wind 8 mph

23 Fri 84° 74° 0.07 in, 63% Wind 9 mph

24 Sat 85° 75° 0.19 in, 76% Wind 13 mph

25 Sun 83° 75° 0.19 in, 65% Wind 11 mph

26 Mon 85° 75° 0.12 in, 58% Wind 10 mph

27 Tue 83° 75° 0.09 in, 44% Wind 7 mph

Forecast: Open-Meteo

Sunrise 06:23 AM Sunset 06:02 PM Daylight 11 hr, 39 min Waxing gibbous 75%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Rio Guayanilla near GuayanillaRiver gauge, Rio Guayanilla	4.83 ft	Very low	−0.13 ft	2.9 mi
Canal De Riego De Lajas below Lago Loco Dam YaucoCanal gauge, Canal De Riego De Lajas	1.09 ft	Very high	−0.02 ft	3.1 mi
Rio Loco at Las Latas near La Joya near GuanicaRiver gauge, Rio Loco	0.0 cfs	Very low	±0	3.6 mi
Lateral M5L, Canal De Riego De Lajas Sabana GrandeCanal gauge	1.12 ft	Normal	±0	3.8 mi
Canal De Riego De Lajas above Majinas Filt. PlantCanal gauge, Canal De Riego De Lajas	2.11 ft	Normal	−0.03 ft	7 mi
Canal De Riego De Lajas below Majinas Filt. PlantCanal gauge, Canal De Riego De Lajas	3.02 ft	High	−0.03 ft	7 mi
Rio Portugues near TibesRiver gauge, Rio Portugues	4.25 ft	Very low	−0.07 ft	14 mi
Canal Riego De Lajas above Lajas Filtration PlantCanal gauge, Canal Riego De Lajas	2.59 ft	Normal	−0.03 ft	14 mi

Questions and answers

Is the Rio Yauco above Diversion Monserrate near Yauco higher than last year?

No, it is 0.28 ft lower than on the same day last year, when the reading was 2.02 ft.

What is flood stage for the Rio Yauco above Diversion Monserrate near Yauco?

The official flood stage is 8.50 ft. The level is currently 6.76 ft below it.

What is a normal level for the Rio Yauco above Diversion Monserrate near Yauco in late October?

The median for late October is 2.90 ft. In 8 years out of 10 the reading falls between 2.06 ft and 3.82 ft, based on 23 years of records.

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 Rio Yauco above Diversion Monserrate near Yauco today?

On Oct 21, 2026, 03:30 AM AST, the water level was 1.74 ft. Down 0.61 ft over the last 24 hours.

Is Rio Yauco above Diversion Monserrate near Yauco rising or falling?

Down 0.61 ft over the last 24 hours. Steady over the last 7 days.

Is the level of Rio Yauco above Diversion Monserrate near Yauco normal?

Very low for late October. Compared with 23 years of daily readings for this time of year.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:50126150 (Agency page)
Coordinates: 18.04919, -66.84186 (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	1.74 ft	2026-10-21 07:30	Provisional
Flow	10.7 cfs	2026-10-21 07:30	Provisional

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How to cite

U.S. Geological Survey: Rio Yauco above Diversion Monserrate near Yauco (usgs:50126150). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/rio-yauco-above-diversion-monserrate-near-yauco

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