Rio Grande De Manati at Ciales water level

Name: Rio Grande De Manati at Ciales 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 Grande De Manati, Puerto Rico, United States

Directions

Normal for mid-October

Water level

2.65ft Down 1.53 ft over the last 24 hours

Measured Oct 20, 2026, 06:30 PM AST (1 hour ago)

Flow: 116 cfs

History

7 days 30 days 1 year Years compared

20252026

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

What this means

Water levels are unremarkable at Rio Grande De Manati at Ciales, where the gauge shows 2.65 ft.

That puts it 0.38 ft below the median of 3.03 ft for mid-October, based on 31 years of readings. It is 7.35 ft below the flood stage of 10.00 ft. A year ago it stood at 2.52 ft (+0.13 ft).

It is still going down, by 1.53 ft over the past 24 hours. The 30-day range is 2.22 ft – 4.69 ft.

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

Compared with 31 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 3.03 ft0.38 ft below the median for this date
Normal for this date: 1.15 ft – 3.83 ft8 years in 10 fall in this range (31 years of records)
Same day last year: 2.52 ft+0.13 ft
Lowest and highest in 30 days: 2.22 ft – 4.69 ft
Lowest and highest in 12 months: 2.20 ft – 5.38 ft
Highest on record: 50.00 ftAugust 8, 1899

Paddling and fishing conditions

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

For reference, flood stage is 10.00 ft.

Highest crests on record

Rank	Level	Date
1	50.00 ft	August 8, 1899
2	48.28 ft	September 19, 2022
3	43.36 ft	September 20, 2017
4	36.00 ft	September 13, 1928
5	34.00 ft	September 26, 1932
6	25.20 ft	September 10, 1996
7	24.00 ft	October 9, 1970
8	22.38 ft	September 21, 1998
9	19.75 ft	October 7, 1985
10	19.62 ft	May 18, 1985

Weather at the gauge

Rain in the last 3 days: 0.49 in. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 89° 71° 0.13 in, 100% Wind 4 mph

21 Wed 91° 71° 0.15 in, 80% Wind 6 mph

22 Thu 90° 71° 0.20 in, 96% Wind 5 mph

23 Fri 89° 73° 0.54 in, 86% Wind 5 mph

24 Sat 89° 75° 0.09 in, 61% Wind 8 mph

25 Sun 93° 73° – Wind 5 mph

26 Mon 88° 72° 0.12 in, 69% Wind 6 mph

Forecast: Open-Meteo

Sunrise 06:22 AM Sunset 06:01 PM Daylight 11 hr, 39 min Waxing gibbous 72%

Map

Other gauges on the Rio Grande De Manati

Gauge	Level	Compared with normal	24 hours	Distance
Rio Grande De Manati at Highway 155 near MorovisRiver gauge, Rio Grande De Manati	3.00 ft	Very low	−0.35 ft	3.7 mi
Rio Grande De Manati near ManatiRiver gauge, Rio Grande De Manati	11.09 ft	Normal	−2.18 ft	5.7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Rio Bauta near OrocovisRiver gauge, Rio Bauta	3.86 ft	Very low	+0.13 ft	6.1 mi
Rio Corozal at CorozalRiver gauge, Rio Corozal	4.60 ft	Normal	+0.07 ft	9 mi
Rio Cibuco at Vega BajaRiver gauge, Rio Cibuco	5.83 ft	Very high	+1.29 ft	10 mi
Rio Saliente at Coabey near JayuyaRiver gauge, Rio Saliente	3.12 ft	Low	−0.03 ft	10 mi
Rio Limon above Lago Dos BocasRiver gauge, Rio Limon	8.37 ft	Very high	−1.67 ft	11 mi
Rio Caonillas at Paso PalmaRiver gauge, Rio Caonillas	3.83 ft	Very low	−0.11 ft	13 mi
Rio Toa Vaca above Lago Toa VacaRiver gauge, Rio Toa Vaca	2.29 ft	Low	−0.39 ft	14 mi
Rio De La Plata at Highway 2 near Toa AltaRiver gauge, Rio De La Plata	4.13 ft	Normal	+0.67 ft	14 mi

Questions and answers

How does the Rio Grande De Manati at Ciales compare with last year?

It is 0.13 ft higher than on the same day last year, when the reading was 2.52 ft.

What is flood stage for the Rio Grande De Manati at Ciales?

The official flood stage is 10.00 ft. The level is currently 7.35 ft below it.

What is a normal level for the Rio Grande De Manati at Ciales in mid-October?

The median for mid-October is 3.03 ft. In 8 years out of 10 the reading falls between 1.15 ft and 3.83 ft, based on 31 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 Grande De Manati at Ciales today?

On Oct 20, 2026, 06:30 PM AST, the water level was 2.65 ft. Down 1.53 ft over the last 24 hours.

Is Rio Grande De Manati at Ciales rising or falling?

Down 1.53 ft over the last 24 hours. Up 0.35 ft over the last 7 days.

Is the level of Rio Grande De Manati at Ciales normal?

Normal for mid-October. Compared with 31 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:50035000 (Agency page)
Coordinates: 18.32443, -66.45995 (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	2.65 ft	2026-10-20 22:30	Provisional
Flow	116 cfs	2026-10-20 22:30	Provisional

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How to cite

U.S. Geological Survey: Rio Grande De Manati at Ciales (usgs:50035000). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/rio-grande-de-manati-at-ciales

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