Puerto Rico streamflow
Live discharge, gauge height, water temperature, and percent-of-normal readings from every USGS streamgauge in Puerto Rico. Built for paddlers, anglers, water managers, and flood researchers.
Streamflow levels across Puerto Rico are currently 55% of normal, with the Rio Culebrinas At Hwy 404 Nr Moca reporting the highest discharge in the state at 103 cfs and a gauge stage of 9.36 ft.
Meanwhile, the Canal De Riego De Lajas At Bo. Palmarejo Nr Lajas is seeing a spike today — up 215% 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.
Active weather warnings for Puerto Rico
A Heat Advisory remains in effect across portions of Puerto Rico until 5:00 PM AST on July 13th, with dangerously hot temperatures and high humidity expected from 10:00 AM through this afternoon. Residents throughout the island, particularly in major population centers and vulnerable communities, should take precautions to avoid heat-related illnesses. Individuals sensitive to heat, elderly populations, children, and those without adequate air conditioning or access to hydration are at elevated risk. Limit outdoor activities during peak heat hours, drink plenty of fluids, check on vulnerable neighbors and family members, and seek air-conditioned shelter when possible. Heat exhaustion and heat stroke are serious threats during these conditions—monitor yourself and others for symptoms including dizziness, nausea, and confusion.
State-wide streamflow overview
The Puerto Rico flow picture in four data points -- where the state sits versus historical norms, what's flowing hardest, and what's spiking fastest.
Percent of normal
100% is the historical norm. Below 70% indicates drought; above 130% can flag elevated flood risk.
Highest discharge
Gauge stage 9.36 ft
Biggest 24h spike
Now 8 cfs
Network coverage
USGS gauges feeding 0 named rivers in Puerto Rico.
Puerto Rico USGS streamgauges
Every USGS gauge Snoflo tracks in Puerto Rico. Sortable, quickly filterable. Numeric columns heat-mapped from light to deep. Tap any gauge for its full hydrograph and forecast.
| Streamgage | Streamflow | Gage height | Water temp | Air temp | Elevation | Watershed |
|---|---|---|---|---|---|---|
|
Rio Grande De Arecibo Nr San Pedro, Pr
10 hours ago · USGS 50027600 |
142 cfs | 6.66 ft | · | 91°F | 72 ft | · |
|
Rio Culebrinas At Hwy 404 Nr Moca, Pr
11 hours ago · USGS 50147800 |
98 cfs | 9.33 ft | · | 94°F | 52 ft | · |
|
Rio Grande De Anasco Nr San Sebastian, Pr
11 hours ago · USGS 50144000 |
95 cfs | 2.09 ft | · | 91°F | 120 ft | · |
|
Rio Grande De Arecibo Blw Utuado, Pr
11 hours ago · USGS 50024950 |
89 cfs | 4.24 ft | · | 89°F | 311 ft | · |
|
Canal Diversion Lago Guajataca, Pr
11 hours ago · USGS 50011000 |
60 cfs | 3.40 ft | · | 88°F | 661 ft | · |
|
Rio Grande De Manati At Ciales, Pr
10 hours ago · USGS 50035000 |
52 cfs | 2.25 ft | · | 75°F | 145 ft | · |
|
Rio Tanama At Charco Hondo, Pr
10 hours ago · USGS 50028400 |
40 cfs | 3.10 ft | · | 91°F | 57 ft | · |
|
Canal De Riego De Lajas Blw Lago Loco Dam Yauco Pr, Pr
10 hours ago · USGS 50128905 |
39 cfs | 1.08 ft | · | 76°F | 203 ft | · |
|
Rio Grande De Loiza At Caguas, Pr
10 hours ago · USGS 50055000 |
39 cfs | 4.15 ft | · | 77°F | 162 ft | · |
|
Rio Cibuco At Vega Baja, Pr
10 hours ago · USGS 50039500 |
38 cfs | 4.42 ft | · | 76°F | 21 ft | · |
|
Canal De Riego De Lajas Abv Majinas Filt. Plant Pr, Pr
10 hours ago · USGS 50128920 |
37 cfs | 2.14 ft | · | 75°F | 185 ft | · |
|
Rio Camuy Nr Bayaney, Pr
10 hours ago · USGS 50014800 |
36 cfs | 4.85 ft | · | 88°F | 354 ft | · |
|
Rio Guanajibo Nr Hormigueros, Pr
10 hours ago · USGS 50138000 |
34 cfs | 9.36 ft | · | 74°F | 14 ft | · |
|
Canal De Riego De Lajas Blw Majinas Filt. Plant Pr, Pr
10 hours ago · USGS 50128925 |
32 cfs | 3.04 ft | · | 75°F | 192 ft | · |
|
Rio Caonillas At Paso Palma, Pr
11 hours ago · USGS 50026025 |
30 cfs | 3.51 ft | · | 86°F | 965 ft | · |
|
Rio Grande De Arecibo Abv Utuado, Pr
11 hours ago · USGS 50021700 |
28 cfs | 3.94 ft | · | 88°F | 516 ft | · |
|
Rio Grande De Loiza At Hwy 183 San Lorenzo, Pr
10 hours ago · USGS 50051800 |
27 cfs | 7.28 ft | · | 76°F | 255 ft | · |
|
Rio Mameyes Nr Sabana, Pr
11 hours ago · USGS 50065500 |
26 cfs | 2.32 ft | · | 76°F | 288 ft | · |
|
Rio De La Plata At Hwy 2 Nr Toa Alta, Pr
10 hours ago · USGS 50046000 |
22 cfs | 3.30 ft | · | 78°F | 12 ft | · |
|
Rio Guayanes At Central Roig, Pr
10 hours ago · USGS 50085100 |
22 cfs | 12.13 ft | · | 79°F | 34 ft | · |
|
Rio De La Plata At Comerio, Pr
10 hours ago · USGS 50043800 |
21 cfs | 5.03 ft | · | 74°F | 623 ft | · |
|
Canal De Patillas Abv Guayama Filtration Plant, Pr
10 hours ago · USGS 50093075 |
19 cfs | 2.56 ft | · | 78°F | 107 ft | · |
|
Rio Limon Abv Lago Dos Bocas, Pr
10 hours ago · USGS 50027000 |
16 cfs | 7.47 ft | · | 90°F | 319 ft | · |
|
Rio Guayanes Nr Yabucoa, Pr
10 hours ago · USGS 50083500 |
16 cfs | 10.20 ft | · | 78°F | 52 ft | · |
|
Rio Cayaguas At Cerro Gordo, Pr
10 hours ago · USGS 50051310 |
14 cfs | 6.00 ft | · | 76°F | 520 ft | · |
|
Rio Gurabo At Gurabo, Pr
10 hours ago · USGS 50057000 |
14 cfs | 4.09 ft | · | 75°F | 147 ft | · |
|
Rio Tanama Nr Utuado, Pr
10 hours ago · USGS 50028000 |
13 cfs | 2.99 ft | · | 88°F | 948 ft | · |
|
Rio Rosario Nr Hormigueros, Pr
10 hours ago · USGS 50136400 |
11 cfs | 1.25 ft | · | 76°F | 164 ft | · |
|
Canal De Riego De Lajas Blw Lajas Filt Plant Lajas, Pr
11 hours ago · USGS 50128940 |
11 cfs | 1.53 ft | · | 75°F | 134 ft | · |
|
Canal De Patillas Blw Guayama Filtration Plant, Pr
10 hours ago · USGS 50093078 |
11 cfs | 1.43 ft | · | 78°F | 101 ft | · |
|
Rio Piedras At Hato Rey, Pr
10 hours ago · USGS 50049100 |
11 cfs | 3.59 ft | · | 79°F | 13 ft | · |
|
Canal De Riego De Lajas At Bo. Palmarejo Nr Lajas, Pr
11 hours ago · USGS 50128945 |
9 cfs | 1.65 ft | · | 75°F | 112 ft | · |
|
Rio Bauta Nr Orocovis, Pr
10 hours ago · USGS 50034000 |
9 cfs | 3.62 ft | · | 71°F | 811 ft | · |
|
Rio Saliente At Coabey Nr Jayuya, Pr
10 hours ago · USGS 50025155 |
8 cfs | 2.96 ft | · | 67°F | 1,688 ft | · |
|
Rio Grande De Loiza At Quebrada Arenas, Pr
10 hours ago · USGS 50050900 |
8 cfs | 4.89 ft | · | 75°F | 649 ft | · |
|
Rio Cerrillos Abv Lago Cerrillos Nr Ponce, Pr
11 hours ago · USGS 50113800 |
8 cfs | · | · | 75°F | 714 ft | · |
|
Rio Maunabo At Lizas, Pr
10 hours ago · USGS 50090500 |
7 cfs | 4.01 ft | · | 77°F | 199 ft | · |
|
Rio Caguitas At Villa Blanca At Caguas, Pr
10 hours ago · USGS 50055225 |
7 cfs | 7.87 ft | · | 78°F | 165 ft | · |
|
Rio De Bayamon Nr Bayamon, Pr
11 hours ago · USGS 50047850 |
6 cfs | 1.78 ft | · | 77°F | 97 ft | · |
|
Rio Cerrillos Nr Ponce, Pr
10 hours ago · USGS 50114000 |
6 cfs | · | · | 76°F | 284 ft | · |
|
Rio Humacao At Las Piedras, Pr
11 hours ago · USGS 50081000 |
6 cfs | · | · | 76°F | 271 ft | · |
|
Rio Inabon At Real Abajo, Pr
11 hours ago · USGS 50112500 |
5 cfs | 1.40 ft | · | 77°F | 423 ft | · |
|
Rio Turabo Abv Borinquen, Pr
11 hours ago · USGS 50053025 |
5 cfs | 3.60 ft | · | 75°F | 492 ft | · |
|
Rio Coamo At Hwy 14 At Coamo, Pr
11 hours ago · USGS 50106100 |
5 cfs | 4.79 ft | · | 75°F | 342 ft | · |
|
Rio Espiritu Santo Nr Rio Grande, Pr
11 hours ago · USGS 50063800 |
5 cfs | 3.09 ft | · | 77°F | 41 ft | · |
|
Rio Guajataca Blw Lago Guajataca, Pr
11 hours ago · USGS 50011200 |
5 cfs | 5.18 ft | · | 88°F | 557 ft | · |
|
Rio Guadiana Nr Guadiana, Pr
10 hours ago · USGS 50044810 |
5 cfs | 1.72 ft | · | 76°F | 249 ft | · |
|
Rio Marin Nr Patillas, Pr
10 hours ago · USGS 50093000 |
4 cfs | 6.29 ft | · | 77°F | 297 ft | · |
|
Rio Valenciano Nr Juncos, Pr
10 hours ago · USGS 50056400 |
4 cfs | 2.74 ft | · | 75°F | 225 ft | · |
|
Rio Grande De Patillas Nr Patillas, Pr
11 hours ago · USGS 50092000 |
4 cfs | 4.58 ft | · | 78°F | 238 ft | · |
|
Rio Fajardo Nr Fajardo, Pr
10 hours ago · USGS 50071000 |
4 cfs | 2.84 ft | · | 78°F | 158 ft | · |
|
Rio Gurabo Blw El Mango, Pr
11 hours ago · USGS 50055750 |
4 cfs | 7.36 ft | · | 75°F | 227 ft | · |
|
Rio Sabana At Sabana, Pr
10 hours ago · USGS 50067000 |
3 cfs | 7.67 ft | · | 76°F | 306 ft | · |
|
Rio Fajardo At Paraiso Nr Fajardo, Pr
10 hours ago · USGS 50070900 |
3 cfs | 4.19 ft | · | 77°F | 223 ft | · |
|
Rio Portugues Nr Tibes, Pr
11 hours ago · USGS 50114900 |
3 cfs | 4.10 ft | · | 75°F | 832 ft | · |
|
Rio Guayanilla Near Guayanilla, Pr
10 hours ago · USGS 50124200 |
3 cfs | 4.74 ft | · | 77°F | 94 ft | · |
|
Rio Grande Nr El Verde, Pr
10 hours ago · USGS 50064200 |
3 cfs | 4.76 ft | · | 77°F | 131 ft | · |
|
Quebrada Grande At Bo. Dos Bocas, Pr
11 hours ago · USGS 50059210 |
2 cfs | 3.78 ft | · | 77°F | 43 ft | · |
|
Rio Bairoa Abv Bairoa, Pr
10 hours ago · USGS 50055380 |
2 cfs | 4.16 ft | · | 77°F | 226 ft | · |
|
Rio Canas At Rio Canas, Pr
10 hours ago · USGS 50058350 |
2 cfs | 9.07 ft | · | 76°F | 152 ft | · |
|
Rio Toa Vaca Abv Lago Toa Vaca, Pr
10 hours ago · USGS 50110900 |
2 cfs | 1.58 ft | · | 72°F | 565 ft | · |
|
Rio Yauco Abv Diversion Monserrate Nr Yauco, Pr
10 hours ago · USGS 50126150 |
2 cfs | 1.31 ft | · | 76°F | 131 ft | · |
|
Rio De Bayamon Blw Lago Cidra, Pr
10 hours ago · USGS 50047560 |
2 cfs | 5.54 ft | · | 72°F | 1,280 ft | · |
|
Rio Guajataca At Lares, Pr
10 hours ago · USGS 50010500 |
1 cfs | 7.90 ft | · | 86°F | 943 ft | · |
|
Rio Canovanas Nr Campo Rico, Pr
10 hours ago · USGS 50061800 |
1 cfs | 2.17 ft | · | 76°F | 229 ft | · |
|
Rio Majada At La Plena, Pr
11 hours ago · USGS 50100450 |
0 cfs | 2.75 ft | · | 77°F | 422 ft | · |
|
Rio Lapa Nr Rabo Del Buey, Pr
11 hours ago · USGS 50100200 |
0 cfs | 5.27 ft | · | 76°F | 395 ft | · |
|
Rio De Bayamon At Arenas, Pr
10 hours ago · USGS 50047535 |
0 cfs | 1.36 ft | · | 71°F | 1,371 ft | · |
|
Rio De La Plata Blw La Plata Damsite, Pr
10 hours ago · USGS 50045010 |
0 cfs | 6.78 ft | · | 76°F | 64 ft | · |
|
Rio Grande De Loiza Blw Damsite Loiza, Pr
11 hours ago · USGS 50059050 |
0 cfs | 2.66 ft | · | 76°F | 44 ft | · |
See every Puerto Rico gauge ranked against normal.
- Percentile rank & % of median for all 70 gauges
- 15-day PULSE forecast on every gauge
- Custom flow alerts & full daily history
About Puerto Rico streamflow
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.