Rio Grande De Loiza at HWY 183, PR
River level and flood forecast · San Lorenzo County
The river is 6.3 ft below flood stage (14 ft).
Flow: 61 cubic feet per second (USGS).
The last 7 days and the forecast
NWS forecast issued Sun, Dec 31, 7 PM. Forecasts change as rain falls and as upstream water arrives.
Get flood alerts for this river
An email when the National Weather Service forecasts Rio Grande De Loiza at HWY 183 to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 28 ft |
| Moderate flood stage | 21 ft |
| Flood stage | 14 ft |
| Action stage | 11 ft |
| Record crest (September 10, 1996) | 35.62 ft |
What floods at each level
From the National Weather Service, highest first.
- 18 ftLa Marina bridge PR 980 likely to be impassable. oms 3/2023
- 16 ftRoad 181 near Escuela Vocacional Dr. Antonio Fernos Isern flooded. OMS 4/2023
- 14 ftRio Loiza out of its banks along road 183./OMS 2/2022
Highest crests on record
- 35.62 ft — September 10, 1996
- 31.37 ft — January 5, 1992
- 30.14 ft — September 21, 1998
- 27.71 ft — September 18, 2022
- 26.74 ft — September 15, 2004
Recent crests: 15.49 ft (November 17, 2024) · 15.59 ft (August 14, 2024) · 17.14 ft (June 2, 2024) · 18.28 ft (April 8, 2023) · 14.65 ft (November 15, 2022)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (SLNP4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.