Rio Grande De Manati near Ciales, PR
River level and flood forecast · Ciales County
The river is 7.7 ft below flood stage (10 ft).
Flow: 57 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.
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An email when the National Weather Service forecasts Rio Grande De Manati near Ciales to flood, when it floods, and when it's over.
Flood stages
| Major flood stage | 16 ft |
| Moderate flood stage | 12 ft |
| Flood stage | 10 ft |
| Action stage | 8 ft |
| Record crest (August 8, 1899) | 50 ft |
Highest crests on record
- 50 ft — August 8, 1899
- 48.28 ft — September 19, 2022
- 43.36 ft — September 20, 2017
- 36 ft — September 13, 1928
- 34 ft — September 26, 1932
Recent crests: 11.26 ft (May 5, 2025) · 10.27 ft (May 2, 2025) · 17.54 ft (May 7, 2024) · 14.83 ft (November 6, 2022) · 48.28 ft (September 19, 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 (CIAP4); flow from the U.S. Geological Survey. Readings are provisional. In a flood, follow your local officials and the NWS at weather.gov.