Puerto Rico River Levels & Streamflow
As of Oct 11, 2026, Puerto Rico rivers are running at 72% of normal across 70 USGS gauges — the highest is 569 cfs on the Rio Culebrinas At Hwy 404 Nr Moca. Live discharge, gauge height, and percent-of-normal for every USGS streamgauge in Puerto Rico.
Puerto Rico river map
See Puerto Rico’s rivers on a live map
Every gauge, river and reservoir, one tap each:
- Rivers now — which are running high or low
- Reservoirs — how full each one is vs normal
- Rain — past 24 hrs and the 72-hr forecast, press play
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Puerto Rico river conditions today
Where rivers are running versus normal, what’s spiking and what’s coming — refreshed daily from USGS and NOAA.
Streamflow levels across Puerto Rico are currently 72% of normal, with the Rio Culebrinas At Hwy 404 Nr Moca reporting the highest discharge in the state at 569 cfs and a gauge stage of 11.12 ft.
Meanwhile, the Rio Grande De Loiza Blw Damsite Loiza is seeing a spike today — up 13381% since yesterday and currently running near peak.
Tap any gauge below for the full hydrograph, paired weather forecast, and historical context. Use the rivers panel to jump into Puerto Rico's named rivers.
How Puerto Rico’s rivers compare to normal
Every gauge placed by its own percent of normal, and three years of the statewide trend.
Where every gauge actually sits
One dot per Puerto Rico streamgauge, placed by its own percent of normal. The state average is a single line through all of it.
Percent of normal compares today's discharge with the historical average for this calendar day. Tap any dot to open that gauge.
Puerto Rico streamflow, three water years
Statewide percent of normal, every day since Oct 2023. The dotted line is normal.
799 daily readings from 70 reporting gauges. Percent of normal is today's statewide discharge against the historical average for the same calendar day — 100% is normal, not "good". The axis tops out at 250%: 33 readings above that — including the 808% peak in Mar 2026 — are drawn along the top edge, so a few flood days cannot flatten three years of everything else. The line breaks in 2 places where the record skips more than five days — those are gaps in reporting, not readings of zero.
Puerto Rico flow report
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Rio Grande De Anasco Nr San Sebastian, Pr
1 day ago · USGS 50144000 |
333 cfs | 2.96 ft | · | 90°F | 120 ft | · |
|
Rio Guajataca Blw Lago Guajataca, Pr
1 day ago · USGS 50011200 |
276 cfs | 7.28 ft | · | 72°F | 557 ft | · |
|
Rio Culebrinas At Hwy 404 Nr Moca, Pr
1 day ago · USGS 50147800 |
222 cfs | 9.91 ft | · | 73°F | 52 ft | · |
|
Rio Grande De Arecibo Nr San Pedro, Pr
1 day ago · USGS 50027600 |
130 cfs | 6.63 ft | · | 76°F | 72 ft | · |
|
Rio Grande De Arecibo Abv Utuado, Pr
1 day ago · USGS 50021700 |
113 cfs | 4.30 ft | · | 73°F | 516 ft | · |
|
Rio Grande De Arecibo Blw Utuado, Pr
1 day ago · USGS 50024950 |
95 cfs | 4.70 ft | · | 73°F | 311 ft | · |
|
Rio Guanajibo Nr Hormigueros, Pr
1 day ago · USGS 50138000 |
82 cfs | 11.41 ft | · | 90°F | 14 ft | · |
|
Rio Cibuco At Vega Baja, Pr
1 day ago · USGS 50039500 |
72 cfs | 4.58 ft | · | 76°F | 21 ft | · |
|
Rio Camuy Nr Bayaney, Pr
1 day ago · USGS 50014800 |
70 cfs | 4.97 ft | · | 73°F | 354 ft | · |
|
Rio Grande De Loiza At Caguas, Pr
1 day ago · USGS 50055000 |
69 cfs | 4.54 ft | · | 77°F | 162 ft | · |
|
Rio Grande De Manati At Ciales, Pr
1 day ago · USGS 50035000 |
66 cfs | 2.33 ft | · | 75°F | 145 ft | · |
|
Rio Rosario Nr Hormigueros, Pr
1 day ago · USGS 50136400 |
58 cfs | 1.86 ft | · | 89°F | 164 ft | · |
|
Rio Tanama At Charco Hondo, Pr
1 day ago · USGS 50028400 |
53 cfs | 3.33 ft | · | 77°F | 57 ft | · |
|
Rio Mameyes Nr Sabana, Pr
1 day ago · USGS 50065500 |
51 cfs | 2.26 ft | · | 77°F | 288 ft | · |
|
Canal Diversion Lago Guajataca, Pr
1 day ago · USGS 50011000 |
50 cfs | 3.25 ft | · | 72°F | 661 ft | · |
|
Rio De La Plata At Hwy 2 Nr Toa Alta, Pr
1 day ago · USGS 50046000 |
48 cfs | 3.50 ft | · | 78°F | 12 ft | · |
|
Rio Guayanes At Central Roig, Pr
1 day ago · USGS 50085100 |
43 cfs | 12.95 ft | · | 77°F | 34 ft | · |
|
Rio Tanama Nr Utuado, Pr
1 day ago · USGS 50028000 |
43 cfs | 3.35 ft | · | 72°F | 948 ft | · |
|
Rio Grande De Loiza At Hwy 183 San Lorenzo, Pr
1 day ago · USGS 50051800 |
42 cfs | 7.51 ft | · | 75°F | 255 ft | · |
|
Rio De La Plata At Comerio, Pr
1 day ago · USGS 50043800 |
35 cfs | 5.36 ft | · | 73°F | 623 ft | · |
|
Canal De Riego De Lajas Abv Majinas Filt. Plant Pr, Pr
1 day ago · USGS 50128920 |
31 cfs | 2.00 ft | · | 94°F | 185 ft | · |
|
Canal De Riego De Lajas Blw Lago Loco Dam Yauco Pr, Pr
1 day ago · USGS 50128905 |
30 cfs | · | · | 93°F | 203 ft | · |
|
Rio Guayanes Nr Yabucoa, Pr
1 day ago · USGS 50083500 |
30 cfs | 10.36 ft | · | 77°F | 52 ft | · |
|
Rio Caonillas At Paso Palma, Pr
1 day ago · USGS 50026025 |
30 cfs | 3.77 ft | · | 72°F | 965 ft | · |
|
Rio Marin Nr Patillas, Pr
1 day ago · USGS 50093000 |
30 cfs | 6.67 ft | · | 76°F | 297 ft | · |
|
Rio Espiritu Santo Nr Rio Grande, Pr
1 day ago · USGS 50063800 |
28 cfs | 3.40 ft | · | 77°F | 41 ft | · |
|
Rio Piedras At Hato Rey, Pr
1 day ago · USGS 50049100 |
27 cfs | 3.86 ft | · | 80°F | 13 ft | · |
|
Rio Limon Abv Lago Dos Bocas, Pr
1 day ago · USGS 50027000 |
26 cfs | 7.54 ft | · | 75°F | 319 ft | · |
|
Canal De Riego De Lajas Blw Majinas Filt. Plant Pr, Pr
1 day ago · USGS 50128925 |
26 cfs | 2.90 ft | · | 94°F | 192 ft | · |
|
Canal De Patillas Abv Guayama Filtration Plant, Pr
1 day ago · USGS 50093075 |
25 cfs | 2.63 ft | · | 77°F | 107 ft | · |
|
Rio Yauco Abv Diversion Monserrate Nr Yauco, Pr
1 day ago · USGS 50126150 |
24 cfs | 2.06 ft | · | 93°F | 131 ft | · |
|
Rio Grande De Patillas Nr Patillas, Pr
1 day ago · USGS 50092000 |
21 cfs | 4.80 ft | · | 77°F | 238 ft | · |
|
Rio Gurabo At Gurabo, Pr
1 day ago · USGS 50057000 |
17 cfs | 4.31 ft | · | 74°F | 147 ft | · |
|
Rio Humacao At Las Piedras, Pr
1 day ago · USGS 50081000 |
16 cfs | · | · | 75°F | 271 ft | · |
|
Rio Grande De Loiza At Quebrada Arenas, Pr
1 day ago · USGS 50050900 |
16 cfs | 5.18 ft | · | 74°F | 649 ft | · |
|
Rio Valenciano Nr Juncos, Pr
1 day ago · USGS 50056400 |
15 cfs | 3.13 ft | · | 75°F | 225 ft | · |
|
Rio Cayaguas At Cerro Gordo, Pr
1 day ago · USGS 50051310 |
14 cfs | 6.04 ft | · | 74°F | 520 ft | · |
|
Rio Guayanilla Near Guayanilla, Pr
1 day ago · USGS 50124200 |
13 cfs | 5.05 ft | · | 92°F | 94 ft | · |
|
Rio Canovanas Nr Campo Rico, Pr
1 day ago · USGS 50061800 |
12 cfs | 2.31 ft | · | 77°F | 229 ft | · |
|
Canal De Riego De Lajas Blw Lajas Filt Plant Lajas, Pr
1 day ago · USGS 50128940 |
12 cfs | 1.52 ft | · | 94°F | 134 ft | · |
|
Rio Cerrillos Abv Lago Cerrillos Nr Ponce, Pr
1 day ago · USGS 50113800 |
12 cfs | · | · | 86°F | 714 ft | · |
|
Rio Gurabo Blw El Mango, Pr
1 day ago · USGS 50055750 |
12 cfs | 7.54 ft | · | 75°F | 227 ft | · |
|
Rio Saliente At Coabey Nr Jayuya, Pr
1 day ago · USGS 50025155 |
11 cfs | 3.12 ft | · | 70°F | 1,688 ft | · |
|
Rio Grande Nr El Verde, Pr
1 day ago · USGS 50064200 |
10 cfs | 5.08 ft | · | 78°F | 131 ft | · |
|
Canal De Riego De Lajas At Bo. Palmarejo Nr Lajas, Pr
1 day ago · USGS 50128945 |
10 cfs | 1.68 ft | · | 94°F | 112 ft | · |
|
Rio Majada At La Plena, Pr
1 day ago · USGS 50100450 |
9 cfs | 3.26 ft | · | 77°F | 422 ft | · |
|
Canal De Patillas Blw Guayama Filtration Plant, Pr
1 day ago · USGS 50093078 |
9 cfs | 1.44 ft | · | 77°F | 101 ft | · |
|
Rio Caguitas At Villa Blanca At Caguas, Pr
1 day ago · USGS 50055225 |
9 cfs | 7.93 ft | · | 77°F | 165 ft | · |
|
Rio Portugues Nr Tibes, Pr
1 day ago · USGS 50114900 |
8 cfs | 4.40 ft | · | 87°F | 832 ft | · |
|
Rio Turabo Abv Borinquen, Pr
1 day ago · USGS 50053025 |
8 cfs | 3.75 ft | · | 74°F | 492 ft | · |
|
Rio De Bayamon Nr Bayamon, Pr
1 day ago · USGS 50047850 |
7 cfs | 1.86 ft | · | 77°F | 97 ft | · |
|
Rio Bauta Nr Orocovis, Pr
1 day ago · USGS 50034000 |
7 cfs | 3.56 ft | · | 71°F | 811 ft | · |
|
Rio Maunabo At Lizas, Pr
1 day ago · USGS 50090500 |
6 cfs | 3.94 ft | · | 76°F | 199 ft | · |
|
Rio Inabon At Real Abajo, Pr
1 day ago · USGS 50112500 |
6 cfs | 1.47 ft | · | 88°F | 423 ft | · |
|
Rio Fajardo Nr Fajardo, Pr
1 day ago · USGS 50071000 |
4 cfs | 2.86 ft | · | 77°F | 158 ft | · |
|
Rio Cerrillos Nr Ponce, Pr
1 day ago · USGS 50114000 |
4 cfs | · | · | 91°F | 284 ft | · |
|
Rio Toa Vaca Abv Lago Toa Vaca, Pr
1 day ago · USGS 50110900 |
4 cfs | 1.66 ft | · | 86°F | 565 ft | · |
|
Rio Guadiana Nr Guadiana, Pr
1 day ago · USGS 50044810 |
4 cfs | 1.63 ft | · | 76°F | 249 ft | · |
|
Rio Coamo At Hwy 14 At Coamo, Pr
1 day ago · USGS 50106100 |
4 cfs | 4.60 ft | · | 90°F | 342 ft | · |
|
Rio Sabana At Sabana, Pr
1 day ago · USGS 50067000 |
3 cfs | 7.82 ft | · | 76°F | 306 ft | · |
|
Rio Grande De Loiza Blw Damsite Loiza, Pr
1 day ago · USGS 50059050 |
3 cfs | 2.71 ft | · | 77°F | 44 ft | · |
|
Rio Guajataca At Lares, Pr
1 day ago · USGS 50010500 |
3 cfs | 8.04 ft | · | 72°F | 943 ft | · |
|
Quebrada Grande At Bo. Dos Bocas, Pr
1 day ago · USGS 50059210 |
2 cfs | 3.88 ft | · | 78°F | 43 ft | · |
|
Rio Canas At Rio Canas, Pr
1 day ago · USGS 50058350 |
2 cfs | 8.99 ft | · | 75°F | 152 ft | · |
|
Rio Bairoa Abv Bairoa, Pr
1 day ago · USGS 50055380 |
1 cfs | 4.20 ft | · | 77°F | 226 ft | · |
|
Rio De Bayamon Blw Lago Cidra, Pr
1 day ago · USGS 50047560 |
1 cfs | 5.56 ft | · | 72°F | 1,280 ft | · |
|
Rio Lapa Nr Rabo Del Buey, Pr
1 day ago · USGS 50100200 |
1 cfs | 5.35 ft | · | 75°F | 395 ft | · |
|
Rio De Bayamon At Arenas, Pr
1 day ago · USGS 50047535 |
0 cfs | 1.28 ft | · | 71°F | 1,371 ft | · |
|
Rio De La Plata Blw La Plata Damsite, Pr
1 day ago · USGS 50045010 |
0 cfs | 6.85 ft | · | 76°F | 64 ft | · |
|
Rio Fajardo At Paraiso Nr Fajardo, Pr
1 day ago · USGS 50070900 |
0 cfs | 4.61 ft | · | 77°F | 223 ft | · |
About Puerto Rico streamflow
What are river levels like in Puerto Rico right now?
As of October 11, 2026, Puerto Rico rivers are running at 72% of normal across 70 USGS streamgauges, and the Rio Culebrinas At Hwy 404 Nr Moca is reporting the highest discharge at 569 cfs. The full sortable gauge table is below.
Which Puerto Rico river is running highest right now?
As of October 11, 2026, the highest discharge in Puerto Rico is 569 cfs on the Rio Culebrinas At Hwy 404 Nr Moca. See the sortable gauge table for the full statewide ranking.
Are Puerto Rico rivers high or low right now?
Compare the statewide percent-of-normal on this page: above 100% means Puerto Rico rivers are running higher than the seasonal average for the date, below 100% means lower (a dry spell or drought). Each gauge also shows its own percent of median.
Where does the Puerto Rico streamflow data come from?
The U.S. Geological Survey National Water Information System. USGS streamgauges report continuously (every 15 minutes) and the data is the canonical real-time record for U.S. rivers. Snoflo pulls the latest readings and joins them to a 7-day NOAA weather forecast for each station.
What is cfs?
Cubic feet per second — the standard unit for streamflow. One cfs is about 7.5 gallons per second. Small creeks run at single-digit cfs; the Mississippi at hundreds of thousands.
What does Gauge Height mean?
The water level at the gauge in feet above the reference datum. Used together with discharge to track river state. Flood stage and runnable levels are typically expressed in gauge height (e.g., "flood at 16 ft").
How fresh is the Puerto Rico data?
USGS streamgauges report every 15 minutes; Snoflo re-pulls throughout the day. The AI briefing regenerates daily.
Can I get a flow alert for a Puerto Rico gauge?
Yes. Save any USGS gauge as a favorite in the Snoflo iOS app, set a discharge or stage threshold (e.g. "alert me when discharge crosses 2,000 cfs"), and you'll get a push the moment it crosses.
Is this a substitute for an NWS flood warning?
No. Snoflo is informational. For flood life-safety decisions always follow guidance from your local NWS forecast office and state emergency management. Snoflo data is one input among several.