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Rio Marin near Patillas water level

River gauge, Rio Marin, Puerto Rico, United States

Directions

Right now

Normal for mid-October

Water level

6.51ft Steady over the last 24 hours

Flow
18.7 cfs
5 10 15 20 Highest onrecord 20.16 ft Minor floodstage 14.00 ft

History

History
468ftOct 13Oct 14Oct 16Oct 18Oct 19468ftOct 13Oct 16Oct 19
510ftSep 20Sep 27Oct 4Oct 12Oct 19Minor flood stage510ftSep 20Oct 4Oct 19Minor flood stage
510ftOct 2025Jan 2026Apr 2026Jul 2026Oct 2026Minor flood stage510ftOct 2025Apr 2026Oct 2026Minor flood stage
468ftJanMarMayJulSepNov2026468ftJanAprJulOct2026

20252026

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

What this means

Water levels are unremarkable at Rio Marin near Patillas, where the gauge shows 6.51 ft.

The median for mid-October is 6.29 ft, based on 21 years of readings, so the river stage is 0.22 ft above typical. It is 7.49 ft below the flood stage of 14.00 ft. On the same day last year the reading was 6.27 ft, a difference of +0.24 ft.

It has barely moved over the past 24 hours. The 30-day range is 6.43 ft – 7.27 ft.

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

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
6.29 ft0.22 ft above the median for this date
Normal for this date
4.30 ft – 8.23 ft8 years in 10 fall in this range (21 years of records)
Same day last year
6.27 ft+0.24 ft
Lowest and highest in 30 days
6.43 ft – 7.27 ft
Lowest and highest in 12 months
6.11 ft – 7.45 ft
Highest on record
20.16 ftSeptember 21, 2008

Paddling and fishing conditions

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

For reference, flood stage is 14.00 ft.

Highest crests on record

RankLevelDate
120.16 ftSeptember 21, 2008
217.30 ftSeptember 18, 2022
316.22 ftJune 2, 2024
415.49 ftJune 29, 2023
513.71 ftSeptember 12, 2011
613.28 ftSeptember 1, 2001
713.11 ftAugust 20, 2013
812.67 ftJuly 31, 2012
912.33 ftSeptember 15, 2004
1011.82 ftAugust 22, 2014

Weather at the gauge

Rain in the last 3 days: 0.09 in. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 85° 74° 0.08 in, 66% Wind 8 mph
18 Sun 85° 74° 0.12 in, 84% Wind 6 mph
19 Mon 84° 72° 0.10 in, 81% Wind 7 mph
20 Tue 84° 72° 0.04 in, 59% Wind 6 mph
21 Wed 83° 71° 0.05 in, 39% Wind 7 mph
22 Thu 82° 73° 0.08 in, 77% Wind 7 mph
23 Fri 84° 72° 0.24 in, 66% Wind 7 mph

Forecast: Open-Meteo

Sunrise 06:19 AM Sunset 06:00 PM Daylight 11 hr, 41 min First quarter 63%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Canal De Patillas at ForebayCanal gauge, Canal De Patillas 1.57 ft High ±0 1.5 mi
Rio Grande De Patillas near PatillasRiver gauge, Rio Grande De Patillas 4.66 ft Normal −0.05 ft 1.5 mi
Rio Grande De Patillas below Lago PatillasCanal gauge, Rio Grande De Patillas 4.31 ft Low ±0 1.7 mi
Rio Maunabo at LizasRiver gauge, Rio Maunabo 3.64 ft Normal −0.07 ft 4.6 mi
Rio Grande De Loiza at Quebrada ArenasRiver gauge, Rio Grande De Loiza 5.09 ft Normal −0.03 ft 5.8 mi
Canal De Patillas above Guayama Filtration PlantCanal gauge, Canal De Patillas 2.63 ft High ±0 7 mi
Canal De Patillas below Guayama Filtration PlantCanal gauge, Canal De Patillas 1.43 ft Normal ±0 7 mi
Rio Guayanes near YabucoaRiver gauge, Rio Guayanes 10.19 ft Normal −0.42 ft 7 mi

Questions and answers

Is the Rio Marin near Patillas higher than last year?

Yes, it is 0.24 ft higher than on the same day last year, when the reading was 6.27 ft.

What is flood stage for the Rio Marin near Patillas?

The official flood stage is 14.00 ft. The level is currently 7.49 ft below it.

What is a normal level for the Rio Marin near Patillas in mid-October?

The median for mid-October is 6.29 ft. In 8 years out of 10 the reading falls between 4.30 ft and 8.23 ft, based on 21 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 Marin near Patillas today?

On Oct 19, 2026, 06:45 PM AST, the water level was 6.51 ft. Steady over the last 24 hours.

Is Rio Marin near Patillas rising or falling?

Steady over the last 24 hours. Down 0.29 ft over the last 7 days.

Is the level of Rio Marin near Patillas normal?

Normal for mid-October. Compared with 21 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:50093000 (Agency page)
Coordinates
18.03778, -66.00972 (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 6.51 ft 2026-10-19 22:45 Provisional
Flow 18.7 cfs 2026-10-19 22:45 Provisional

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How to cite

U.S. Geological Survey: Rio Marin near Patillas (usgs:50093000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/puerto-rico/rio-marin-near-patillas

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.