Rio Blanco at Florida, PR
River level and flood forecast · Naguabo County
The river is 3.5 ft below flood stage (7.3 ft).
Flow: 8 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 Blanco at Florida to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 16 ft |
| Moderate flood stage | 9 ft |
| Flood stage | 7.3 ft |
| Action stage | 5 ft |
| Record crest (July 30, 2019) | 17.04 ft |
What floods at each level
From the National Weather Service, highest first.
- 20 ft20.00 ft Rio Blanco out of its banks - Road #3(HWY 53) and Road 191/31 impassable. OMS/5.2019
- 10 ftRoad 31 and 191 impassable. Road #31 intersection with Road #3(HWY 53) impassable. OMS/5.2019
- 7 ftRio Blanco out of its banks causing flooding along low lying areas. Road PR-191 could be impassable. Road PR-31, Exit 22 toward Highway PR-53 will be impassable as well. The exit toward the highway may be flooded as well.
Highest crests on record
- 17.04 ft — July 30, 2019
- 17 ft — August 14, 2024
- 16.86 ft — November 5, 2024
- 14.11 ft — June 5, 2024
- 13.57 ft — July 30, 2020
Recent crests: 9.04 ft (March 28, 2026) · 11.39 ft (November 1, 2025) · 8.89 ft (September 25, 2025) · 9.47 ft (September 18, 2025) · 8.27 ft (September 8, 2025)
Up and down the river, and nearby
Not an official source. River levels, forecasts, flood stages and impacts are from the National Weather Service (NGKP4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.