Rio Grande De Manati near Manati water level

Name: Rio Grande De Manati near Manati 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 late October

Water level

10.95ft Down 0.86 ft over the last 24 hours

Measured Oct 21, 2026, 01:45 AM AST (1 hour ago)

Flow: 134 cfs

History

7 days 30 days 1 year

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

What this means

The Rio Grande De Manati near Manati is at 10.95 ft, in the normal range for late October.

That puts it 0.23 ft below the median of 11.18 ft for late October, based on 8 years of readings. It is 5.05 ft below the flood stage of 16.00 ft. A year ago it stood at 10.80 ft (+0.15 ft).

It has dropped 0.86 ft over the past 24 hours. In the last month it has stayed between 10.65 ft and 13.27 ft.

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

Compared with 8 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 11.18 ft0.23 ft below the median for this date
Normal for this date: 10.40 ft – 13.46 ft8 years in 10 fall in this range (8 years of records)
Same day last year: 10.80 ft+0.15 ft
Lowest and highest in 30 days: 10.65 ft – 13.27 ft
Lowest and highest in 12 months: 10.43 ft – 14.03 ft
Highest on record: 37.16 ftAugust 14, 2024

Floating and fishing near Rio Grande De Manati near Manati

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

Flood stage here is 16.00 ft, 5.05 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

35.00 ft: PR-2 impassable from La Vuelta Nutrition Club to Paso Real.-erg 09/24
31.00 ft: Flood water reaches houses in Sector California, near PR-2. -erg 09/2024
25.00 ft: Widespread flooding at PR-2. The road becomes totally impassable.-erg 05/2025
23.00 ft: Several lanes of PR-2 will become impassable. -erg 05/2025
16.00 ft: Rio Grande de Manati likely to be overflowed over PR-2, km 51 to 52 from Barceloneta eastward to Manati/ erg 05/2025
10.95 ft: Right now

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

Highest crests on record

Rank	Level	Date
1	37.16 ft	August 14, 2024
2	35.97 ft	May 7, 2024
3	31.04 ft	November 6, 2022
4	25.06 ft	May 6, 2024
5	23.69 ft	May 5, 2025
6	23.27 ft	May 2, 2025
7	22.70 ft	September 10, 2025
8	22.45 ft	May 9, 2024
9	20.51 ft	March 13, 2025
10	20.07 ft	May 4, 2025

Weather at the gauge

Rain in the last 3 days: 0.33 in. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 88° 71° 0.09 in, 100% Wind 6 mph

21 Wed 88° 70° 0.11 in, 83% Wind 8 mph

22 Thu 87° 72° 0.22 in, 82% Wind 7 mph

23 Fri 88° 73° 0.11 in, 62% Wind 7 mph

24 Sat 90° 74° 0.21 in, 56% Wind 10 mph

25 Sun 91° 75° 0.07 in, 55% Wind 8 mph

26 Mon 89° 75° 0.09 in, 59% Wind 9 mph

Forecast: Open-Meteo

Sunrise 06:22 AM Sunset 06:00 PM Daylight 11 hr, 38 min Waxing gibbous 75%

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	2.97 ft	Very low	−0.22 ft	9 mi
Rio Grande De Manati at CialesRiver gauge, Rio Grande De Manati	2.53 ft	Normal	−0.48 ft	5.7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Rio Cibuco at Vega BajaRiver gauge, Rio Cibuco	5.29 ft	Normal	+0.39 ft	9 mi
Rio Limon above Lago Dos BocasRiver gauge, Rio Limon	8.16 ft	High	−0.29 ft	10 mi
Rio Bauta near OrocovisRiver gauge, Rio Bauta	3.79 ft	Very low	−0.34 ft	12 mi
Rio Corozal at CorozalRiver gauge, Rio Corozal	4.57 ft	Normal	−0.07 ft	12 mi
Rio Grande De Arecibo near San PedroRiver gauge, Rio Grande De Arecibo	6.92 ft	Normal	−0.09 ft	13 mi
Rio Saliente at Coabey near JayuyaRiver gauge, Rio Saliente	3.11 ft	Low	−0.03 ft	14 mi
Rio Tanama at Charco HondoRiver gauge, Rio Tanama	4.60 ft	Normal	+0.25 ft	14 mi
Rio Caonillas at Paso PalmaRiver gauge, Rio Caonillas	3.81 ft	Very low	−0.07 ft	15 mi

Questions and answers

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

It is 0.15 ft higher than on the same day last year, when the reading was 10.80 ft.

What is flood stage for the Rio Grande De Manati near Manati?

The official flood stage is 16.00 ft. The level is currently 5.05 ft below it.

What is a normal level for the Rio Grande De Manati near Manati in late October?

The median for late October is 11.18 ft. In 8 years out of 10 the reading falls between 10.40 ft and 13.46 ft, based on 8 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 near Manati today?

On Oct 21, 2026, 01:45 AM AST, the water level was 10.95 ft. Down 0.86 ft over the last 24 hours.

Is Rio Grande De Manati near Manati rising or falling?

Down 0.86 ft over the last 24 hours. Up 0.19 ft over the last 7 days.

Is the level of Rio Grande De Manati near Manati normal?

Normal for late October. Compared with 8 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:50037000 (Agency page)
Coordinates: 18.39944, -66.49694 (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	10.95 ft	2026-10-21 05:45	Provisional
Flow	134 cfs	2026-10-21 05:45	Provisional

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How to cite

U.S. Geological Survey: Rio Grande De Manati near Manati (usgs:50037000). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/rio-grande-de-manati-near-manati

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