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 84% of normal, with the Rio Culebrinas At Margarita Damsite Nr Aguada reporting the highest discharge in the state at 1,640 cfs and a gauge stage of 9.70 ft.
Meanwhile, the Rio Grande De Loiza Blw Damsite Loiza is seeing a spike today — up 2198% 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.
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 9.70 ft
Biggest 24h spike
Now 347 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 Saliente At Coabey Nr Jayuya, Pr
7 days ago · USGS 50025155 |
12 cfs | 3.08 ft | · | 82°F | 1,688 ft | · |
|
Rio Caonillas At Paso Palma, Pr
7 days ago · USGS 50026025 |
47 cfs | 3.81 ft | · | 82°F | 965 ft | · |
|
Rio Bauta Nr Orocovis, Pr
7 days ago · USGS 50034000 |
22 cfs | 3.89 ft | · | 79°F | 811 ft | · |
|
Rio Grande De Arecibo Abv Utuado, Pr
7 days ago · USGS 50021700 |
45 cfs | 4.09 ft | · | 84°F | 516 ft | · |
|
Rio Grande De Manati Nr Morovis, Pr
8 years ago · USGS 50031200 |
116 cfs | 1.71 ft | · | 80°F | 445 ft | · |
|
Rio Guajataca At Lares, Pr
7 days ago · USGS 50010500 |
2 cfs | 7.97 ft | · | 83°F | 943 ft | · |
|
Rio Tanama Nr Utuado, Pr
7 days ago · USGS 50028000 |
27 cfs | 3.27 ft | · | 85°F | 948 ft | · |
|
Rio Grande De Arecibo Blw Utuado, Pr
7 days ago · USGS 50024950 |
110 cfs | 4.46 ft | · | 86°F | 311 ft | · |
|
Rio Grande De Manati At Ciales, Pr
7 days ago · USGS 50035000 |
134 cfs | 2.48 ft | · | 87°F | 145 ft | · |
|
Rio Limon Abv Lago Dos Bocas, Pr
7 days ago · USGS 50027000 |
42 cfs | 7.85 ft | · | 87°F | 319 ft | · |
|
Rio Cibuco Blw Corozal, Pr
8 years ago · USGS 50038320 |
1,710 cfs | 4.23 ft | · | 84°F | 188 ft | · |
|
Rio Camuy Nr Bayaney, Pr
7 days ago · USGS 50014800 |
63 cfs | 4.98 ft | · | 85°F | 354 ft | · |
|
Rio Grande De Arecibo Nr San Pedro, Pr
7 days ago · USGS 50027600 |
97 cfs | 6.57 ft | · | 89°F | 72 ft | · |
|
Rio Guajataca Blw Lago Guajataca, Pr
7 days ago · USGS 50011200 |
6 cfs | 5.22 ft | · | 85°F | 557 ft | · |
|
Canal Diversion Lago Guajataca, Pr
7 days ago · USGS 50011000 |
55 cfs | 3.28 ft | · | 85°F | 661 ft | · |
|
Rio Tanama At Charco Hondo, Pr
7 days ago · USGS 50028400 |
50 cfs | 3.41 ft | · | 88°F | 57 ft | · |
|
Rio Grande De Manati At Hwy 2 Nr Manati, Pr
6 years ago · USGS 50038100 |
1,290 cfs | 10.47 ft | · | 85°F | 15 ft | · |
|
Rio Cibuco At Vega Baja, Pr
7 days ago · USGS 50039500 |
52 cfs | 4.46 ft | · | 90°F | 21 ft | · |
|
Rio Grande De Arecibo At Central Cambalache, Pr
7 years ago · USGS 50029000 |
24 cfs | · | · | 86°F | 10 ft | · |
|
Rio Guanajibo Nr Hormigueros, Pr
7 days ago · USGS 50138000 |
87 cfs | 9.69 ft | · | 88°F | 14 ft | · |
|
Rio Rosario Nr Hormigueros, Pr
7 days ago · USGS 50136400 |
26 cfs | 1.42 ft | · | 88°F | 164 ft | · |
|
Rio Grande De Anasco Nr San Sebastian, Pr
7 days ago · USGS 50144000 |
179 cfs | 2.47 ft | · | 88°F | 120 ft | · |
|
Rio Culebrinas At Hwy 404 Nr Moca, Pr
7 days ago · USGS 50147800 |
217 cfs | 9.68 ft | · | 90°F | 52 ft | · |
|
Rio Culebrinas At Margarita Damsite Nr Aguada, Pr
8 months ago · USGS 50148890 |
1,640 cfs | 9.70 ft | · | 90°F | 16 ft | · |
|
Canal De Patillas Abv Guayama Filtration Plant, Pr
7 days ago · USGS 50093075 |
22 cfs | 2.62 ft | · | 87°F | 107 ft | · |
|
Canal De Patillas Blw Guayama Filtration Plant, Pr
7 days ago · USGS 50093078 |
11 cfs | 1.49 ft | · | 87°F | 101 ft | · |
|
Rio Grande De Patillas Nr Patillas, Pr
7 days ago · USGS 50092000 |
67 cfs | 5.18 ft | · | 87°F | 238 ft | · |
|
Rio Marin Nr Patillas, Pr
7 days ago · USGS 50093000 |
17 cfs | 6.66 ft | · | 87°F | 297 ft | · |
|
Canal De Riego De Lajas At Bo. Palmarejo Nr Lajas, Pr
7 days ago · USGS 50128945 |
10 cfs | 1.70 ft | · | 90°F | 112 ft | · |
|
Canal De Riego De Lajas Blw Lago Loco Dam Yauco Pr, Pr
7 days ago · USGS 50128905 |
40 cfs | 1.10 ft | · | 90°F | 203 ft | · |
|
Rio Guayanilla Near Guayanilla, Pr
7 days ago · USGS 50124200 |
15 cfs | 4.86 ft | · | 89°F | 94 ft | · |
|
Rio Majada At La Plena, Pr
7 days ago · USGS 50100450 |
2 cfs | 2.96 ft | · | 88°F | 422 ft | · |
|
Canal De Riego De Lajas Abv Majinas Filt. Plant Pr, Pr
7 days ago · USGS 50128920 |
38 cfs | 2.16 ft | · | 90°F | 185 ft | · |
|
Canal De Riego De Lajas Blw Majinas Filt. Plant Pr, Pr
7 days ago · USGS 50128925 |
32 cfs | 2.99 ft | · | 90°F | 192 ft | · |
|
Canal De Riego De Lajas Blw Lajas Filt Plant Lajas, Pr
7 days ago · USGS 50128940 |
12 cfs | 1.52 ft | · | 90°F | 134 ft | · |
|
Rio Yauco Abv Diversion Monserrate Nr Yauco, Pr
7 days ago · USGS 50126150 |
4 cfs | 1.50 ft | · | 90°F | 131 ft | · |
|
Rio Lapa Nr Rabo Del Buey, Pr
7 days ago · USGS 50100200 |
1 cfs | 5.34 ft | · | 86°F | 395 ft | · |
|
Rio Cerrillos Nr Ponce, Pr
7 days ago · USGS 50114000 |
6 cfs | · | · | 87°F | 284 ft | · |
|
Rio Coamo At Hwy 14 At Coamo, Pr
7 days ago · USGS 50106100 |
5 cfs | 4.63 ft | · | 86°F | 342 ft | · |
|
Rio Inabon At Real Abajo, Pr
7 days ago · USGS 50112500 |
14 cfs | 1.52 ft | · | 85°F | 423 ft | · |
|
Rio Portugues Nr Tibes, Pr
7 days ago · USGS 50114900 |
4 cfs | 4.48 ft | · | 84°F | 832 ft | · |
|
Rio Cerrillos Abv Lago Cerrillos Nr Ponce, Pr
7 days ago · USGS 50113800 |
15 cfs | · | · | 82°F | 714 ft | · |
|
Rio Toa Vaca Abv Lago Toa Vaca, Pr
7 days ago · USGS 50110900 |
7 cfs | 1.78 ft | · | 83°F | 565 ft | · |
|
Rio Maunabo At Lizas, Pr
7 days ago · USGS 50090500 |
18 cfs | 4.14 ft | · | 86°F | 199 ft | · |
|
Rio Guayanes Nr Yabucoa, Pr
7 days ago · USGS 50083500 |
64 cfs | 10.96 ft | · | 86°F | 52 ft | · |
|
Rio Guayanes At Central Roig, Pr
7 days ago · USGS 50085100 |
97 cfs | 13.48 ft | · | 86°F | 34 ft | · |
|
Rio Grande De Loiza At Quebrada Arenas, Pr
7 days ago · USGS 50050900 |
41 cfs | 5.29 ft | · | 83°F | 649 ft | · |
|
Rio Cayaguas At Cerro Gordo, Pr
7 days ago · USGS 50051310 |
16 cfs | 6.31 ft | · | 85°F | 520 ft | · |
|
Rio Turabo Abv Borinquen, Pr
7 days ago · USGS 50053025 |
21 cfs | 4.19 ft | · | 85°F | 492 ft | · |
|
Rio De Bayamon At Arenas, Pr
7 days ago · USGS 50047535 |
0 cfs | 1.62 ft | · | 81°F | 1,371 ft | · |
|
Rio Humacao At Las Piedras, Pr
7 days ago · USGS 50081000 |
17 cfs | · | · | 86°F | 271 ft | · |
|
Rio Grande De Loiza At Hwy 183 San Lorenzo, Pr
7 days ago · USGS 50051800 |
99 cfs | 7.80 ft | · | 87°F | 255 ft | · |
|
Rio De Bayamon Blw Lago Cidra, Pr
7 days ago · USGS 50047560 |
7 cfs | 5.90 ft | · | 81°F | 1,280 ft | · |
|
Rio Valenciano Nr Juncos, Pr
7 days ago · USGS 50056400 |
39 cfs | 3.42 ft | · | 86°F | 225 ft | · |
|
Rio De La Plata At Comerio, Pr
7 days ago · USGS 50043800 |
59 cfs | 5.58 ft | · | 84°F | 623 ft | · |
|
Rio Blanco Nr Florida, Pr
9 years ago · USGS 50076000 |
38 cfs | 9.57 ft | · | 86°F | 52 ft | · |
|
Rio Gurabo Blw El Mango, Pr
7 days ago · USGS 50055750 |
160 cfs | 8.68 ft | · | 86°F | 227 ft | · |
|
Rio Grande De Loiza At Caguas, Pr
7 days ago · USGS 50055000 |
142 cfs | 4.94 ft | · | 88°F | 162 ft | · |
|
Rio Caguitas At Villa Blanca At Caguas, Pr
7 days ago · USGS 50055225 |
16 cfs | 8.04 ft | · | 88°F | 165 ft | · |
|
Rio Gurabo At Gurabo, Pr
7 days ago · USGS 50057000 |
268 cfs | 5.62 ft | · | 86°F | 147 ft | · |
|
Rio Bairoa Abv Bairoa, Pr
7 days ago · USGS 50055380 |
3 cfs | 4.25 ft | · | 88°F | 226 ft | · |
|
Rio Icacos Nr Naguabo, Pr
10 months ago · USGS 50075000 |
28 cfs | 1.47 ft | 70°F | 74°F | 2,034 ft | · |
|
Rio Fajardo At Paraiso Nr Fajardo, Pr
7 days ago · USGS 50070900 |
6 cfs | 4.34 ft | · | 87°F | 223 ft | · |
|
Rio Canas At Rio Canas, Pr
7 days ago · USGS 50058350 |
7 cfs | 9.25 ft | · | 87°F | 152 ft | · |
|
Rio Fajardo Nr Fajardo, Pr
7 days ago · USGS 50071000 |
13 cfs | 2.96 ft | · | 87°F | 158 ft | · |
|
Rio Guadiana Nr Guadiana, Pr
7 days ago · USGS 50044810 |
10 cfs | 1.85 ft | · | 88°F | 249 ft | · |
|
Rio Canovanas Nr Campo Rico, Pr
7 days ago · USGS 50061800 |
32 cfs | 2.67 ft | · | 88°F | 229 ft | · |
|
Rio Mameyes Nr Sabana, Pr
7 days ago · USGS 50065500 |
82 cfs | 2.46 ft | · | 83°F | 288 ft | · |
|
Rio Sabana At Sabana, Pr
7 days ago · USGS 50067000 |
6 cfs | 7.94 ft | · | 86°F | 306 ft | · |
|
Rio De Bayamon Nr Bayamon, Pr
7 days ago · USGS 50047850 |
11 cfs | 1.88 ft | · | 87°F | 97 ft | · |
|
Rio Grande De Loiza Blw Damsite Loiza, Pr
7 days ago · USGS 50059050 |
347 cfs | 4.71 ft | · | 86°F | 44 ft | · |
|
Rio Grande Nr El Verde, Pr
7 days ago · USGS 50064200 |
24 cfs | 5.29 ft | · | 89°F | 131 ft | · |
|
Quebrada Las Curias Blw Las Curias Outflow, Pr
10 years ago · USGS 50048690 |
0 cfs | 7.18 ft | · | 89°F | 258 ft | · |
|
Rio De La Plata Blw La Plata Damsite, Pr
7 days ago · USGS 50045010 |
1 cfs | 7.07 ft | · | 86°F | 64 ft | · |
|
Quebrada Grande At Bo. Dos Bocas, Pr
7 days ago · USGS 50059210 |
4 cfs | 3.96 ft | · | 87°F | 43 ft | · |
|
Rio Espiritu Santo Nr Rio Grande, Pr
7 days ago · USGS 50063800 |
77 cfs | 3.67 ft | · | 89°F | 41 ft | · |
|
Rio Piedras At Hato Rey, Pr
7 days ago · USGS 50049100 |
17 cfs | 3.70 ft | · | 88°F | 13 ft | · |
|
Rio De La Plata At Hwy 2 Nr Toa Alta, Pr
7 days ago · USGS 50046000 |
53 cfs | 3.50 ft | · | 88°F | 12 ft | · |
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.