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Rio Grande De Loiza at Quebrada Arenas water level

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

Directions

Right now

Normal for mid-October

Water level

5.08ft Steady over the last 24 hours

Flow
11.4 cfs
10 20 Highest onrecord 26.37 ft Minor floodstage 12.00 ft

History

History
5.05.56.0ftOct 16Oct 17Oct 18Oct 19Oct 205.05.56.0ftOct 16Oct 18Oct 20
5.05.56.0ftSep 21Sep 28Oct 5Oct 13Oct 205.05.56.0ftSep 21Oct 5Oct 20
567ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026567ftOct 2025Apr 2026Oct 2026
567ftJanMarMayJulSepNov2026567ftJanAprJulOct2026

20252026

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

What this means

The Rio Grande De Loiza at Quebrada Arenas is at 5.08 ft, in the normal range for mid-October.

That puts it 0.16 ft below the median of 5.24 ft for mid-October, based on 32 years of readings. It is 6.92 ft below the flood stage of 12.00 ft. A year ago it stood at 4.89 ft (+0.19 ft).

The level has held steady over the past 24 hours. In the last month it has stayed between 5.03 ft and 6.06 ft.

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

Compared with 32 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
5.24 ft0.16 ft below the median for this date
Normal for this date
4.80 ft – 5.73 ft8 years in 10 fall in this range (32 years of records)
Same day last year
4.89 ft+0.19 ft
Lowest and highest in 30 days
5.03 ft – 6.06 ft
Lowest and highest in 12 months
4.78 ft – 6.47 ft
Highest on record
26.37 ftSeptember 21, 1998

Floating and fishing near Rio Grande De Loiza at Quebrada Arenas

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

Flood stage here is 12.00 ft, 6.92 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.

What happens at each level

15.41 ft
Barrio Jagual, Sector Los Diaz bridge destroyed; Sector Merilla took away bridge; landslides in various areas of the Mjnicipality, Barrio Quebrada Honda, Sectores La Escuela, Jacobo Perez, Carr 181 Quebrada Arena, Barrio Quemados, Carr 181, Ramal 788
11.00 ft
Rio Grande de Loiza out of its banks on road PR-9912 intersecting road PR-181. /OMS 2/2022
5.08 ft
Right now

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

Highest crests on record

RankLevelDate
126.37 ftSeptember 21, 1998
225.93 ftSeptember 10, 1996
317.52 ftJanuary 5, 1992
414.78 ftNovember 5, 1983
514.01 ftSeptember 18, 2022
613.84 ftSeptember 21, 2008
713.40 ftJuly 18, 1979
813.17 ftAugust 22, 2001
913.11 ftOctober 18, 2006
1012.44 ftDecember 25, 2009

Weather at the gauge

Rain in the last 3 days: 0.39 in. Rain that falls upstream can take hours or days to show up at a river gauge.

20 Tue 85° 71° 0.05 in, 39% Wind 6 mph
21 Wed 85° 70° 0.11 in, 29% Wind 7 mph
22 Thu 83° 73° 0.08 in, 81% Wind 7 mph
23 Fri 83° 71° 0.24 in, 82% Wind 7 mph
24 Sat 79° 74° 0.32 in, 85% Wind 8 mph
25 Sun 84° 73° 0.09 in, 68% Wind 7 mph
26 Mon 85° 71° 0.02 in, 69% Wind 6 mph

Forecast: Open-Meteo

Sunrise 06:20 AM Sunset 05:59 PM Daylight 11 hr, 40 min Waxing gibbous 71%

Map

Other gauges on the Rio Grande De Loiza

Gauge Level Compared with normal 24 hours Distance
Rio Grande De Loiza at Highway 183 San LorenzoRiver gauge, Rio Grande De Loiza 7.37 ft Very low −0.01 ft 4.9 mi
Rio Grande De Loiza at CaguasRiver gauge, Rio Grande De Loiza 4.31 ft Very low −0.05 ft 9 mi
Rio Grande De Loiza below Loiza DamsiteRiver gauge, Rio Grande De Loiza 2.62 ft Very low −0.11 ft 15 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Rio Cayaguas at Cerro GordoRiver gauge, Rio Cayaguas 5.94 ft Normal ±0 3.1 mi
Rio Turabo above BorinquenRiver gauge, Rio Turabo 3.64 ft Very low ±0 4.5 mi
Rio Marin near PatillasRiver gauge, Rio Marin 6.51 ft Normal −0.01 ft 5.8 mi
Rio Grande De Patillas near PatillasRiver gauge, Rio Grande De Patillas 4.65 ft Normal −0.02 ft 7 mi
Rio Guayanes near YabucoaRiver gauge, Rio Guayanes 10.21 ft Normal ±0 7 mi
Rio Maunabo at LizasRiver gauge, Rio Maunabo 3.67 ft Normal +0.02 ft 7 mi
Rio Grande De Patillas below Lago PatillasCanal gauge, Rio Grande De Patillas 4.34 ft Low +0.03 ft 8 mi
Rio Valenciano near JuncosRiver gauge, Rio Valenciano 2.96 ft Normal +0.07 ft 8 mi

Questions and answers

How does the Rio Grande De Loiza at Quebrada Arenas compare with last year?

It is 0.19 ft higher than on the same day last year, when the reading was 4.89 ft.

What is flood stage for the Rio Grande De Loiza at Quebrada Arenas?

The official flood stage is 12.00 ft. The level is currently 6.92 ft below it.

What is a normal level for the Rio Grande De Loiza at Quebrada Arenas in mid-October?

The median for mid-October is 5.24 ft. In 8 years out of 10 the reading falls between 4.80 ft and 5.73 ft, based on 32 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 Loiza at Quebrada Arenas today?

On Oct 20, 2026, 03:00 PM AST, the water level was 5.08 ft. Steady over the last 24 hours.

Is Rio Grande De Loiza at Quebrada Arenas rising or falling?

Steady over the last 24 hours. Down 0.17 ft over the last 7 days.

Is the level of Rio Grande De Loiza at Quebrada Arenas normal?

Normal for mid-October. Compared with 32 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:50050900 (Agency page)
Coordinates
18.12000, -65.98861 (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 5.08 ft 2026-10-20 19:00 Provisional
Flow 11.4 cfs 2026-10-20 19:00 Provisional

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How to cite

U.S. Geological Survey: Rio Grande De Loiza at Quebrada Arenas (usgs:50050900). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/rio-grande-de-loiza-at-quebrada-arenas

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.