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San Juan Radar Outage Impacts Precipitation Estimates.. read more here
Hydrograph River at a Glance Download
Rio Grande De Manati near Ciales Stage (ft)Flow (kcfs)Highest Observation: 2.14 ft at 1:00AM Nov 30, 2020Observed: 2.13 ft at 1:15AM Nov 30, 2020Highest Observation: 2.14 ft at 1:30AM Nov 30, 2020Observed: 2.13 ft at 1:45AM Nov 30, 2020Observed: 2.13 ft at 2:00AM Nov 30, 2020Observed: 2.12 ft at 2:15AM Nov 30, 2020Observed: 2.13 ft at 2:30AM Nov 30, 2020Observed: 2.12 ft at 2:45AM Nov 30, 2020Observed: 2.13 ft at 3:00AM Nov 30, 2020Observed: 2.12 ft at 3:15AM Nov 30, 2020Observed: 2.12 ft at 3:30AM Nov 30, 2020Observed: 2.11 ft at 3:45AM Nov 30, 2020Observed: 2.12 ft at 4:00AM Nov 30, 2020Observed: 2.11 ft at 4:15AM Nov 30, 2020Observed: 2.1 ft at 4:30AM Nov 30, 2020Observed: 2.1 ft at 4:45AM Nov 30, 2020Observed: 2.1 ft at 5:00AM Nov 30, 2020Observed: 2.09 ft at 5:15AM Nov 30, 2020Observed: 2.1 ft at 5:30AM Nov 30, 2020Observed: 2.09 ft at 5:45AM Nov 30, 2020Observed: 2.1 ft at 6:00AM Nov 30, 2020Observed: 2.09 ft at 6:15AM Nov 30, 2020Observed: 2.09 ft at 6:30AM Nov 30, 2020Observed: 2.08 ft at 6:45AM Nov 30, 2020Observed: 2.09 ft at 7:00AM Nov 30, 2020Observed: 2.08 ft at 7:15AM Nov 30, 2020Observed: 2.08 ft at 7:30AM Nov 30, 2020Observed: 2.07 ft at 7:45AM Nov 30, 2020Observed: 2.08 ft at 8:00AM Nov 30, 2020Observed: 2.07 ft at 8:15AM Nov 30, 2020Observed: 2.08 ft at 8:30AM Nov 30, 2020Observed: 2.07 ft at 8:45AM Nov 30, 2020Observed: 2.07 ft at 9:00AM Nov 30, 2020Observed: 2.07 ft at 9:15AM Nov 30, 2020Observed: 2.07 ft at 9:30AM Nov 30, 2020Observed: 2.06 ft at 9:45AM Nov 30, 2020Observed: 2.05 ft at 10:00AM Nov 30, 2020Observed: 2.04 ft at 10:15AM Nov 30, 2020Observed: 2.06 ft at 10:26AM Nov 30, 2020Observed: 2.06 ft at 10:30AM Nov 30, 2020Observed: 2.06 ft at 10:45AM Nov 30, 2020Observed: 2.05 ft at 11:00AM Nov 30, 2020Observed: 2.06 ft at 11:15AM Nov 30, 2020Observed: 2.04 ft at 11:30AM Nov 30, 2020Observed: 2.06 ft at 11:45AM Nov 30, 2020Observed: 2.05 ft at 12:00PM Nov 30, 2020Observed: 2.05 ft at 12:15PM Nov 30, 2020Observed: 2.05 ft at 12:30PM Nov 30, 2020Observed: 2.04 ft at 12:45PM Nov 30, 2020Observed: 2.04 ft at 1:00PM Nov 30, 2020Observed: 2.03 ft at 1:15PM Nov 30, 2020Observed: 2.03 ft at 1:30PM Nov 30, 2020Observed: 2.02 ft at 1:45PM Nov 30, 2020Observed: 2.02 ft at 2:00PM Nov 30, 2020Observed: 2.03 ft at 2:15PM Nov 30, 2020Observed: 2.02 ft at 2:30PM Nov 30, 2020Observed: 1.99 ft at 2:45PM Nov 30, 2020Observed: 2.05 ft at 3:00PM Nov 30, 2020Observed: 2.03 ft at 3:15PM Nov 30, 2020Observed: 2.05 ft at 3:30PM Nov 30, 2020Observed: 2.03 ft at 3:45PM Nov 30, 2020Observed: 2.03 ft at 4:00PM Nov 30, 2020Observed: 2.02 ft at 4:15PM Nov 30, 2020Observed: 2.03 ft at 4:30PM Nov 30, 2020Observed: 2.01 ft at 4:45PM Nov 30, 2020Observed: 2.03 ft at 5:00PM Nov 30, 2020Observed: 2.01 ft at 5:15PM Nov 30, 2020Observed: 2.02 ft at 5:30PM Nov 30, 2020Observed: 2 ft at 5:45PM Nov 30, 2020Observed: 2.01 ft at 6:00PM Nov 30, 2020Observed: 1.99 ft at 6:15PM Nov 30, 2020Observed: 2.01 ft at 6:26PM Nov 30, 2020Observed: 2 ft at 6:30PM Nov 30, 2020Observed: 1.98 ft at 6:45PM Nov 30, 2020Observed: 2.01 ft at 7:00PM Nov 30, 2020Observed: 1.99 ft at 7:15PM Nov 30, 2020Observed: 2.02 ft at 7:30PM Nov 30, 2020Observed: 2.01 ft at 7:45PM Nov 30, 2020Observed: 2.03 ft at 8:00PM Nov 30, 2020Observed: 2.01 ft at 8:15PM Nov 30, 2020Observed: 2.02 ft at 8:30PM Nov 30, 2020Observed: 2 ft at 8:45PM Nov 30, 2020Observed: 2.03 ft at 9:00PM Nov 30, 2020Observed: 2 ft at 9:15PM Nov 30, 2020Observed: 2.01 ft at 9:30PM Nov 30, 2020Observed: 2 ft at 9:45PM Nov 30, 2020Observed: 2.02 ft at 10:00PM Nov 30, 2020Observed: 2 ft at 10:15PM Nov 30, 2020Observed: 2.04 ft at 10:30PM Nov 30, 2020Observed: 2.02 ft at 10:45PM Nov 30, 2020Observed: 2.01 ft at 11:00PM Nov 30, 2020Observed: 2 ft at 11:15PM Nov 30, 2020Observed: 1.99 ft at 11:30PM Nov 30, 2020Observed: 1.98 ft at 11:45PM Nov 30, 2020Observed: 1.99 ft at 12:00AM Dec 01, 2020Observed: 1.98 ft at 12:15AM Dec 01, 2020Observed: 1.99 ft at 12:30AM Dec 01, 2020Observed: 1.99 ft at 12:45AM Dec 01, 2020Observed: 1.99 ft at 1:00AM Dec 01, 2020Observed: 1.98 ft at 1:15AM Dec 01, 2020Observed: 1.98 ft at 1:30AM Dec 01, 2020Observed: 1.98 ft at 1:45AM Dec 01, 2020Observed: 1.98 ft at 2:00AM Dec 01, 2020Observed: 1.97 ft at 2:15AM Dec 01, 2020Observed: 1.98 ft at 2:30AM Dec 01, 2020Observed: 1.98 ft at 2:45AM Dec 01, 2020Observed: 1.99 ft at 3:00AM Dec 01, 2020Observed: 1.98 ft at 3:15AM Dec 01, 2020Observed: 1.99 ft at 3:30AM Dec 01, 2020Observed: 1.97 ft at 3:45AM Dec 01, 2020Observed: 1.98 ft at 4:00AM Dec 01, 2020Observed: 1.97 ft at 4:15AM Dec 01, 2020Observed: 1.98 ft at 4:30AM Dec 01, 2020Observed: 1.97 ft at 4:45AM Dec 01, 2020Observed: 1.98 ft at 5:00AM Dec 01, 2020Observed: 1.97 ft at 5:15AM Dec 01, 2020Observed: 1.98 ft at 5:30AM Dec 01, 2020Observed: 1.97 ft at 5:45AM Dec 01, 2020Observed: 1.97 ft at 6:00AM Dec 01, 2020Observed: 1.96 ft at 6:15AM Dec 01, 2020Observed: 1.97 ft at 6:30AM Dec 01, 2020Observed: 1.97 ft at 6:45AM Dec 01, 2020Observed: 1.97 ft at 7:00AM Dec 01, 2020Observed: 1.96 ft at 7:15AM Dec 01, 2020Observed: 1.97 ft at 7:30AM Dec 01, 2020Observed: 1.96 ft at 7:45AM Dec 01, 2020Observed: 1.97 ft at 8:00AM Dec 01, 2020Observed: 1.96 ft at 8:15AM Dec 01, 2020Observed: 1.95 ft at 8:30AM Dec 01, 2020Observed: 1.96 ft at 8:45AM Dec 01, 2020Observed: 1.97 ft at 9:00AM Dec 01, 2020Observed: 1.97 ft at 9:15AM Dec 01, 2020Observed: 1.96 ft at 9:30AM Dec 01, 2020Observed: 1.96 ft at 9:45AM Dec 01, 2020Observed: 1.96 ft at 10:00AM Dec 01, 2020Observed: 1.95 ft at 10:15AM Dec 01, 2020Observed: 1.95 ft at 10:30AM Dec 01, 2020Observed: 1.95 ft at 10:31AM Dec 01, 2020Observed: 1.96 ft at 10:45AM Dec 01, 2020Observed: 1.96 ft at 11:00AM Dec 01, 2020Observed: 1.97 ft at 11:15AM Dec 01, 2020Observed: 1.96 ft at 11:30AM Dec 01, 2020Observed: 1.95 ft at 11:45AM Dec 01, 2020Observed: 1.96 ft at 12:00PM Dec 01, 2020Observed: 1.95 ft at 12:15PM Dec 01, 2020Observed: 1.95 ft at 12:30PM Dec 01, 2020Observed: 1.93 ft at 1:45PM Dec 01, 2020Observed: 1.98 ft at 2:00PM Dec 01, 2020Observed: 1.95 ft at 2:15PM Dec 01, 2020Observed: 1.95 ft at 2:30PM Dec 01, 2020Observed: 1.96 ft at 4:45PM Dec 01, 2020Observed: 1.97 ft at 5:00PM Dec 01, 2020Observed: 1.95 ft at 5:15PM Dec 01, 2020Observed: 1.98 ft at 5:30PM Dec 01, 2020Observed: 1.94 ft at 5:45PM Dec 01, 2020Observed: 1.97 ft at 6:00PM Dec 01, 2020Observed: 1.94 ft at 6:15PM Dec 01, 2020Observed: 1.96 ft at 6:30PM Dec 01, 2020Observed: 1.93 ft at 6:45PM Dec 01, 2020Observed: 1.95 ft at 7:00PM Dec 01, 2020Observed: 1.92 ft at 7:15PM Dec 01, 2020Observed: 1.95 ft at 7:30PM Dec 01, 2020Observed: 1.93 ft at 7:45PM Dec 01, 2020Observed: 1.95 ft at 8:00PM Dec 01, 2020Observed: 1.93 ft at 8:15PM Dec 01, 2020Observed: 1.95 ft at 8:30PM Dec 01, 2020Observed: 1.94 ft at 8:45PM Dec 01, 2020Observed: 1.96 ft at 9:00PM Dec 01, 2020Observed: 1.95 ft at 9:15PM Dec 01, 2020Observed: 1.97 ft at 9:30PM Dec 01, 2020Observed: 1.96 ft at 9:45PM Dec 01, 2020Observed: 1.98 ft at 10:00PM Dec 01, 2020Observed: 1.97 ft at 10:15PM Dec 01, 2020Observed: 2 ft at 10:30PM Dec 01, 2020Observed: 2 ft at 10:45PM Dec 01, 2020Observed: 1.98 ft at 11:00PM Dec 01, 2020Observed: 1.94 ft at 11:15PM Dec 01, 2020Observed: 1.93 ft at 11:30PM Dec 01, 2020Observed: 1.93 ft at 11:45PM Dec 01, 2020Observed: 1.93 ft at 12:00AM Dec 02, 2020Observed: 1.93 ft at 12:15AM Dec 02, 2020Observed: 1.93 ft at 12:30AM Dec 02, 2020Observed: 1.92 ft at 12:45AM Dec 02, 2020Observed: 1.92 ft at 1:00AM Dec 02, 2020Observed: 1.92 ft at 1:15AM Dec 02, 2020Observed: 1.92 ft at 1:30AM Dec 02, 2020Observed: 1.91 ft at 1:45AM Dec 02, 2020Observed: 1.92 ft at 2:00AM Dec 02, 2020Observed: 1.91 ft at 2:15AM Dec 02, 2020Observed: 1.92 ft at 2:30AM Dec 02, 2020Observed: 1.92 ft at 2:45AM Dec 02, 2020Observed: 1.92 ft at 3:00AM Dec 02, 2020Observed: 1.92 ft at 3:15AM Dec 02, 2020Observed: 1.92 ft at 3:30AM Dec 02, 2020Observed: 1.92 ft at 3:45AM Dec 02, 2020Observed: 1.92 ft at 4:00AM Dec 02, 2020Observed: 1.91 ft at 4:15AM Dec 02, 2020Observed: 1.92 ft at 4:30AM Dec 02, 2020Observed: 1.91 ft at 4:45AM Dec 02, 2020Observed: 1.92 ft at 5:00AM Dec 02, 2020Observed: 1.92 ft at 5:15AM Dec 02, 2020Observed: 1.93 ft at 5:30AM Dec 02, 2020Observed: 1.91 ft at 5:45AM Dec 02, 2020Observed: 1.92 ft at 6:00AM Dec 02, 2020Observed: 1.91 ft at 6:15AM Dec 02, 2020Observed: 1.92 ft at 6:30AM Dec 02, 2020Observed: 1.91 ft at 6:45AM Dec 02, 2020Observed: 1.92 ft at 7:00AM Dec 02, 2020Observed: 1.91 ft at 7:15AM Dec 02, 2020Observed: 1.92 ft at 7:30AM Dec 02, 2020Observed: 1.92 ft at 7:45AM Dec 02, 2020Observed: 1.91 ft at 8:00AM Dec 02, 2020Observed: 1.9 ft at 8:15AM Dec 02, 2020Observed: 1.91 ft at 8:30AM Dec 02, 2020Observed: 1.92 ft at 8:45AM Dec 02, 2020Observed: 1.91 ft at 9:00AM Dec 02, 2020Observed: 1.91 ft at 9:15AM Dec 02, 2020Observed: 1.91 ft at 9:30AM Dec 02, 2020Observed: 1.91 ft at 9:45AM Dec 02, 2020Observed: 1.91 ft at 10:00AM Dec 02, 2020Observed: 1.91 ft at 10:15AM Dec 02, 2020Observed: 1.9 ft at 10:30AM Dec 02, 2020Observed: 1.9 ft at 10:31AM Dec 02, 2020Observed: 1.91 ft at 10:45AM Dec 02, 2020Observed: 1.91 ft at 11:00AM Dec 02, 2020Observed: 1.89 ft at 11:15AM Dec 02, 2020Observed: 1.92 ft at 11:30AM Dec 02, 2020Observed: 1.89 ft at 11:45AM Dec 02, 2020Observed: 1.91 ft at 12:00PM Dec 02, 2020Observed: 1.94 ft at 12:15PM Dec 02, 2020Observed: 1.9 ft at 12:30PM Dec 02, 2020Observed: 1.9 ft at 12:45PM Dec 02, 2020Observed: 1.89 ft at 1:00PM Dec 02, 2020Observed: 1.89 ft at 1:15PM Dec 02, 2020Observed: 1.9 ft at 1:30PM Dec 02, 2020Observed: 1.9 ft at 1:45PM Dec 02, 2020Observed: 1.89 ft at 2:00PM Dec 02, 2020Observed: 1.88 ft at 2:15PM Dec 02, 2020Observed: 1.91 ft at 2:30PM Dec 02, 2020Observed: 1.89 ft at 2:45PM Dec 02, 2020Observed: 1.9 ft at 3:00PM Dec 02, 2020Observed: 1.9 ft at 3:15PM Dec 02, 2020Observed: 1.89 ft at 3:30PM Dec 02, 2020Observed: 1.89 ft at 3:45PM Dec 02, 2020Observed: 1.89 ft at 4:00PM Dec 02, 2020Observed: 1.87 ft at 4:15PM Dec 02, 2020Observed: 1.91 ft at 4:30PM Dec 02, 2020Observed: 1.91 ft at 4:45PM Dec 02, 2020Observed: 1.91 ft at 5:00PM Dec 02, 2020Observed: 1.93 ft at 5:15PM Dec 02, 2020Observed: 1.92 ft at 5:30PM Dec 02, 2020Observed: 1.94 ft at 5:45PM Dec 02, 2020Observed: 1.95 ft at 6:00PM Dec 02, 2020Observed: 1.92 ft at 6:15PM Dec 02, 2020Observed: 1.94 ft at 6:30PM Dec 02, 2020Observed: 1.93 ft at 6:35PM Dec 02, 2020Observed: 1.91 ft at 6:45PM Dec 02, 2020Observed: 1.93 ft at 7:00PM Dec 02, 2020Observed: 1.91 ft at 7:15PM Dec 02, 2020Observed: 1.93 ft at 7:30PM Dec 02, 2020Observed: 1.91 ft at 7:45PM Dec 02, 2020Observed: 1.94 ft at 8:00PM Dec 02, 2020Observed: 1.92 ft at 8:15PM Dec 02, 2020Observed: 1.95 ft at 8:30PM Dec 02, 2020Observed: 1.93 ft at 8:45PM Dec 02, 2020Observed: 1.95 ft at 9:00PM Dec 02, 2020Observed: 1.94 ft at 9:15PM Dec 02, 2020Observed: 1.95 ft at 9:30PM Dec 02, 2020Observed: 1.95 ft at 9:45PM Dec 02, 2020Observed: 1.92 ft at 10:00PM Dec 02, 2020Observed: 1.95 ft at 10:15PM Dec 02, 2020Observed: 1.92 ft at 10:30PM Dec 02, 2020Observed: 1.88 ft at 10:45PM Dec 02, 2020Observed: 1.89 ft at 11:00PM Dec 02, 2020Observed: 1.89 ft at 11:15PM Dec 02, 2020Observed: 1.89 ft at 11:30PM Dec 02, 2020USGS--Water Resources of the United StatesCIAP4(plotting HGIRG) Graph Created (12:51AM Dec 3, 2020)ObservedLatest observed value: 1.89 ft at 11:30 PM AST 2-Dec-2020. Flood Stage is 10 ft
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About this graph
Tabular Data (UTC)
Tabular Data (AST)
XML Data
RSS Files
Datum: Not Available
Metadata
NOTE: Forecasts are not available for the Rio Grande De Manati near Ciales. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 16
Moderate Flood Stage: 12
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): 0

Historic Crests
(1) 50.00 ft on 08/08/1899
(2) 43.36 ft on 09/20/2017
(3) 36.00 ft on 09/13/1928
(4) 34.00 ft on 09/26/1932
(5) 25.20 ft on 09/10/1996
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 43.36 ft on 09/20/2017
(2) 10.58 ft on 11/24/2015
(3) 13.31 ft on 08/23/2014
(4) 12.16 ft on 10/26/2012
(5) 16.37 ft on 05/05/2012
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 2.78 ft on 10/28/1993

For more information on your flood risk go to www.floodsmart.gov.
Zoom Level:14
KML Image
Gauge LocationGauge Map Marker
 Disclaimer
Latitude/Longitude Disclaimer: The gauge location shown in the above map is the approximate location based on the latitude/longitude coordinates provided to the NWS by the gauge owner.
About This Location Collapse

Latitude: 18.323889° N, Longitude: 66.460000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 10 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)		 Elevation
(gauge height = flood stage)		 Elevation information source
NAVD88 Not Available Not Available Survey grade GPS equipment, FEMA flood plain maps, newer USGS topographic maps
NGVD 29 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other NULL NULL  

Current/Historical Observations:
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Hydrologic Resources Additional Resources
Collaborative Agencies Collapse
The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across the country. For details, please click here.
NWS Information
National Weather Service
San Juan Weather Forecast Office
4000 Carreterra 190
San Juan, PR 00979
(787) 253-4586
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