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Rio Grande De Manati near Manati water level

River gauge, Rio Grande De Manati, Puerto Rico, United States

Directions

Right now

Normal for mid-October

Water level

12.05ft Up 0.48 ft over the last 24 hours

Flow
531 cfs
10 20 30 40 Highest onrecord 37.16 ft Minor floodstage 16.00 ft

History

History
10121416ftOct 16Oct 17Oct 18Oct 19Oct 20Minor flood stage10121416ftOct 16Oct 18Oct 20Minor flood stage
10121416ftSep 21Sep 28Oct 5Oct 12Oct 20Minor flood stage10121416ftSep 21Oct 5Oct 20Minor flood stage
101315ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage101315ftOct 2025Apr 2026Oct 2026Minor flood stage
Water level Normal range (10–90 %) Minor flood stage

What this means

The Rio Grande De Manati near Manati is at 12.05 ft, in the normal range for mid-October.

That puts it 0.87 ft above the median of 11.18 ft for mid-October, based on 8 years of readings. It is 3.95 ft below the flood stage of 16.00 ft. A year ago it stood at 10.80 ft (+1.25 ft).

It has risen 0.48 ft over the past 24 hours. There is still 3.95 ft of room before flood stage. In the last month it has stayed between 10.66 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 ft0.87 ft above the median for this date
Normal for this date
10.48 ft – 13.35 ft8 years in 10 fall in this range (8 years of records)
Same day last year
10.80 ft+1.25 ft
Lowest and highest in 30 days
10.66 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, 3.95 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
12.05 ft
Right now

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

Highest crests on record

RankLevelDate
137.16 ftAugust 14, 2024
235.97 ftMay 7, 2024
331.04 ftNovember 6, 2022
425.06 ftMay 6, 2024
523.69 ftMay 5, 2025
623.27 ftMay 2, 2025
722.70 ftSeptember 10, 2025
822.45 ftMay 9, 2024
920.51 ftMarch 13, 2025
1020.07 ftMay 4, 2025

Weather at the gauge

The forecast is not available right now.

Sunrise 06:22 AM Sunset 06:01 PM Daylight 11 hr, 39 min First quarter 65%

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 3.23 ft Normal −0.31 ft 9 mi
Rio Grande De Manati at CialesRiver gauge, Rio Grande De Manati 3.17 ft Normal −0.17 ft 5.7 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Rio Cibuco at Vega BajaRiver gauge, Rio Cibuco 4.78 ft Normal +0.08 ft 9 mi
Rio Limon above Lago Dos BocasRiver gauge, Rio Limon 8.56 ft Very high +0.42 ft 10 mi
Rio Bauta near OrocovisRiver gauge, Rio Bauta 3.94 ft Very low −0.12 ft 12 mi
Rio Corozal at CorozalRiver gauge, Rio Corozal 4.58 ft Normal −0.19 ft 12 mi
Rio Grande De Arecibo near San PedroRiver gauge, Rio Grande De Arecibo 7.17 ft Normal +0.22 ft 13 mi
Rio Saliente at Coabey near JayuyaRiver gauge, Rio Saliente 3.14 ft Low −0.10 ft 14 mi
Rio Tanama at Charco HondoRiver gauge, Rio Tanama 4.33 ft Normal −1.16 ft 14 mi
Rio Caonillas at Paso PalmaRiver gauge, Rio Caonillas 3.89 ft Very low −0.25 ft 15 mi

Questions and answers

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

It is 1.25 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 3.95 ft below it.

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

The median for mid-October is 11.18 ft. In 8 years out of 10 the reading falls between 10.48 ft and 13.35 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 20, 2026, 12:45 AM AST, the water level was 12.05 ft. Up 0.48 ft over the last 24 hours.

Is Rio Grande De Manati near Manati rising or falling?

Up 0.48 ft over the last 24 hours. Up 1.30 ft over the last 7 days.

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

Normal for mid-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

ParameterLast valueTime (UTC)Quality
Water level 12.05 ft 2026-10-20 04:45 Provisional
Flow 531 cfs 2026-10-20 04:45 Provisional

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How to cite

U.S. Geological Survey: Rio Grande De Manati near Manati (usgs:50037000). Accessed October 20, 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.