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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)Observed: 2.47 ft at 9:00PM Nov 26, 2021Observed: 2.46 ft at 9:15PM Nov 26, 2021Observed: 2.46 ft at 9:30PM Nov 26, 2021Observed: 2.44 ft at 9:45PM Nov 26, 2021Observed: 2.44 ft at 10:00PM Nov 26, 2021Observed: 2.43 ft at 10:15PM Nov 26, 2021Observed: 2.43 ft at 10:30PM Nov 26, 2021Observed: 2.42 ft at 10:45PM Nov 26, 2021Observed: 2.42 ft at 11:00PM Nov 26, 2021Observed: 2.41 ft at 11:15PM Nov 26, 2021Observed: 2.41 ft at 11:30PM Nov 26, 2021Observed: 2.4 ft at 11:45PM Nov 26, 2021Observed: 2.39 ft at 12:00AM Nov 27, 2021Observed: 2.38 ft at 12:11AM Nov 27, 2021Observed: 2.38 ft at 12:15AM Nov 27, 2021Observed: 2.37 ft at 12:30AM Nov 27, 2021Observed: 2.36 ft at 12:45AM Nov 27, 2021Observed: 2.36 ft at 1:00AM Nov 27, 2021Observed: 2.35 ft at 1:15AM Nov 27, 2021Observed: 2.35 ft at 1:30AM Nov 27, 2021Observed: 2.34 ft at 1:45AM Nov 27, 2021Observed: 2.34 ft at 2:00AM Nov 27, 2021Observed: 2.32 ft at 2:15AM Nov 27, 2021Observed: 2.31 ft at 2:30AM Nov 27, 2021Observed: 2.31 ft at 2:45AM Nov 27, 2021Observed: 2.3 ft at 3:00AM Nov 27, 2021Observed: 2.29 ft at 3:15AM Nov 27, 2021Observed: 2.3 ft at 3:30AM Nov 27, 2021Observed: 2.29 ft at 3:45AM Nov 27, 2021Observed: 2.29 ft at 4:00AM Nov 27, 2021Observed: 2.28 ft at 4:15AM Nov 27, 2021Observed: 2.27 ft at 4:30AM Nov 27, 2021Observed: 2.26 ft at 4:45AM Nov 27, 2021Observed: 2.26 ft at 5:00AM Nov 27, 2021Observed: 2.24 ft at 5:15AM Nov 27, 2021Observed: 2.25 ft at 5:30AM Nov 27, 2021Observed: 2.23 ft at 5:45AM Nov 27, 2021Observed: 2.24 ft at 6:00AM Nov 27, 2021Observed: 2.23 ft at 6:15AM Nov 27, 2021Observed: 2.23 ft at 6:30AM Nov 27, 2021Observed: 2.22 ft at 6:45AM Nov 27, 2021Observed: 2.21 ft at 7:00AM Nov 27, 2021Observed: 2.21 ft at 7:15AM Nov 27, 2021Observed: 2.21 ft at 7:30AM Nov 27, 2021Observed: 2.2 ft at 7:45AM Nov 27, 2021Observed: 2.2 ft at 8:00AM Nov 27, 2021Observed: 2.2 ft at 8:11AM Nov 27, 2021Observed: 2.2 ft at 8:15AM Nov 27, 2021Observed: 2.2 ft at 8:30AM Nov 27, 2021Observed: 2.17 ft at 9:45AM Nov 27, 2021Observed: 2.17 ft at 10:00AM Nov 27, 2021Observed: 2.16 ft at 10:15AM Nov 27, 2021Observed: 2.16 ft at 10:30AM Nov 27, 2021Observed: 2.16 ft at 10:45AM Nov 27, 2021Observed: 2.15 ft at 11:00AM Nov 27, 2021Observed: 2.15 ft at 11:15AM Nov 27, 2021Observed: 2.14 ft at 11:30AM Nov 27, 2021Observed: 2.14 ft at 11:45AM Nov 27, 2021Observed: 2.13 ft at 12:00PM Nov 27, 2021Observed: 2.12 ft at 12:15PM Nov 27, 2021Observed: 2.13 ft at 12:30PM Nov 27, 2021Observed: 2.12 ft at 12:45PM Nov 27, 2021Observed: 2.12 ft at 1:00PM Nov 27, 2021Observed: 2.11 ft at 1:15PM Nov 27, 2021Observed: 2.1 ft at 1:30PM Nov 27, 2021Observed: 2.1 ft at 1:45PM Nov 27, 2021Observed: 2.11 ft at 2:00PM Nov 27, 2021Observed: 2.09 ft at 2:15PM Nov 27, 2021Observed: 2.1 ft at 2:30PM Nov 27, 2021Observed: 2.09 ft at 2:45PM Nov 27, 2021Observed: 2.08 ft at 3:00PM Nov 27, 2021Observed: 2.07 ft at 3:15PM Nov 27, 2021Observed: 2.09 ft at 3:30PM Nov 27, 2021Observed: 2.07 ft at 3:45PM Nov 27, 2021Observed: 2.07 ft at 4:00PM Nov 27, 2021Observed: 2.07 ft at 4:11PM Nov 27, 2021Observed: 2.06 ft at 4:15PM Nov 27, 2021Observed: 2.08 ft at 4:30PM Nov 27, 2021Observed: 2.06 ft at 4:45PM Nov 27, 2021Observed: 2.08 ft at 5:00PM Nov 27, 2021Observed: 2.06 ft at 5:15PM Nov 27, 2021Observed: 2.06 ft at 5:30PM Nov 27, 2021Observed: 2.05 ft at 5:45PM Nov 27, 2021Observed: 2.05 ft at 6:00PM Nov 27, 2021Observed: 2.04 ft at 6:15PM Nov 27, 2021Observed: 2.05 ft at 6:30PM Nov 27, 2021Observed: 2.04 ft at 6:45PM Nov 27, 2021Observed: 2.04 ft at 7:00PM Nov 27, 2021Observed: 2.04 ft at 7:15PM Nov 27, 2021Observed: 2.04 ft at 7:30PM Nov 27, 2021Observed: 2.03 ft at 7:45PM Nov 27, 2021Observed: 2.04 ft at 8:00PM Nov 27, 2021Observed: 2.03 ft at 8:15PM Nov 27, 2021Observed: 2.04 ft at 8:30PM Nov 27, 2021Observed: 2.03 ft at 8:45PM Nov 27, 2021Observed: 2.03 ft at 9:00PM Nov 27, 2021Observed: 2.02 ft at 9:15PM Nov 27, 2021Observed: 2.03 ft at 9:30PM Nov 27, 2021Observed: 2.02 ft at 9:45PM Nov 27, 2021Observed: 2.02 ft at 10:00PM Nov 27, 2021Observed: 2.01 ft at 10:15PM Nov 27, 2021Observed: 2.02 ft at 10:30PM Nov 27, 2021Observed: 2.01 ft at 10:45PM Nov 27, 2021Observed: 2.01 ft at 11:00PM Nov 27, 2021Observed: 2 ft at 11:15PM Nov 27, 2021Observed: 2.01 ft at 11:30PM Nov 27, 2021Observed: 2 ft at 11:45PM Nov 27, 2021Observed: 2.02 ft at 12:00AM Nov 28, 2021Observed: 2.01 ft at 12:11AM Nov 28, 2021Observed: 2.01 ft at 12:15AM Nov 28, 2021Observed: 2 ft at 12:30AM Nov 28, 2021Observed: 1.99 ft at 1:45AM Nov 28, 2021Observed: 1.99 ft at 2:00AM Nov 28, 2021Observed: 1.99 ft at 2:15AM Nov 28, 2021Observed: 1.99 ft at 2:30AM Nov 28, 2021Observed: 1.98 ft at 2:45AM Nov 28, 2021Observed: 1.99 ft at 3:00AM Nov 28, 2021Observed: 1.98 ft at 3:15AM Nov 28, 2021Observed: 1.99 ft at 3:30AM Nov 28, 2021Observed: 1.98 ft at 3:45AM Nov 28, 2021Observed: 1.98 ft at 4:00AM Nov 28, 2021Observed: 1.98 ft at 4:15AM Nov 28, 2021Observed: 1.97 ft at 4:30AM Nov 28, 2021Observed: 1.97 ft at 4:45AM Nov 28, 2021Observed: 1.98 ft at 5:00AM Nov 28, 2021Observed: 1.97 ft at 5:15AM Nov 28, 2021Observed: 1.97 ft at 5:30AM Nov 28, 2021Observed: 1.97 ft at 5:45AM Nov 28, 2021Observed: 1.97 ft at 6:00AM Nov 28, 2021Observed: 1.96 ft at 6:15AM Nov 28, 2021Observed: 1.97 ft at 6:30AM Nov 28, 2021Observed: 1.96 ft at 6:45AM Nov 28, 2021Observed: 1.97 ft at 7:00AM Nov 28, 2021Observed: 1.96 ft at 7:15AM Nov 28, 2021Observed: 1.98 ft at 7:30AM Nov 28, 2021Observed: 1.97 ft at 7:45AM Nov 28, 2021Observed: 1.98 ft at 8:00AM Nov 28, 2021Observed: 1.98 ft at 8:15AM Nov 28, 2021Observed: 1.98 ft at 8:16AM Nov 28, 2021Observed: 1.97 ft at 8:30AM Nov 28, 2021Observed: 1.97 ft at 8:45AM Nov 28, 2021Observed: 1.98 ft at 9:00AM Nov 28, 2021Observed: 1.99 ft at 9:15AM Nov 28, 2021Observed: 1.98 ft at 9:30AM Nov 28, 2021Observed: 1.96 ft at 9:45AM Nov 28, 2021Observed: 1.95 ft at 10:00AM Nov 28, 2021Observed: 1.95 ft at 10:15AM Nov 28, 2021Observed: 1.97 ft at 10:30AM Nov 28, 2021Observed: 1.95 ft at 10:45AM Nov 28, 2021Observed: 1.95 ft at 11:00AM Nov 28, 2021Observed: 1.95 ft at 11:15AM Nov 28, 2021Observed: 1.96 ft at 11:30AM Nov 28, 2021Observed: 1.96 ft at 11:45AM Nov 28, 2021Observed: 1.96 ft at 12:00PM Nov 28, 2021Observed: 1.94 ft at 12:15PM Nov 28, 2021Observed: 1.93 ft at 12:30PM Nov 28, 2021Observed: 1.94 ft at 12:45PM Nov 28, 2021Observed: 1.93 ft at 1:00PM Nov 28, 2021Observed: 1.92 ft at 1:15PM Nov 28, 2021Observed: 1.94 ft at 1:30PM Nov 28, 2021Observed: 1.94 ft at 1:45PM Nov 28, 2021Observed: 1.93 ft at 2:00PM Nov 28, 2021Observed: 1.92 ft at 2:15PM Nov 28, 2021Observed: 1.93 ft at 2:30PM Nov 28, 2021Observed: 1.92 ft at 2:45PM Nov 28, 2021Observed: 1.92 ft at 3:00PM Nov 28, 2021Observed: 1.91 ft at 3:15PM Nov 28, 2021Observed: 1.92 ft at 3:30PM Nov 28, 2021Observed: 1.91 ft at 4:16PM Nov 28, 2021Observed: 1.9 ft at 4:45PM Nov 28, 2021Observed: 1.91 ft at 5:00PM Nov 28, 2021Observed: 1.88 ft at 5:15PM Nov 28, 2021Observed: 1.89 ft at 5:30PM Nov 28, 2021Observed: 1.88 ft at 5:45PM Nov 28, 2021Observed: 1.92 ft at 6:00PM Nov 28, 2021Observed: 1.91 ft at 6:15PM Nov 28, 2021Observed: 1.97 ft at 6:30PM Nov 28, 2021Observed: 3.13 ft at 7:45PM Nov 28, 2021Observed: 3.18 ft at 8:00PM Nov 28, 2021Observed: 3.17 ft at 8:15PM Nov 28, 2021Highest Observation: 3.2 ft at 8:30PM Nov 28, 2021Observed: 3.18 ft at 8:45PM Nov 28, 2021Observed: 3.16 ft at 9:00PM Nov 28, 2021Observed: 3.11 ft at 9:15PM Nov 28, 2021Observed: 3.04 ft at 9:30PM Nov 28, 2021Observed: 3.01 ft at 9:45PM Nov 28, 2021Observed: 3.01 ft at 10:00PM Nov 28, 2021Observed: 2.98 ft at 10:15PM Nov 28, 2021Observed: 2.98 ft at 10:30PM Nov 28, 2021Observed: 2.95 ft at 10:45PM Nov 28, 2021Observed: 2.93 ft at 11:00PM Nov 28, 2021Observed: 2.89 ft at 11:15PM Nov 28, 2021Observed: 2.85 ft at 11:30PM Nov 28, 2021Observed: 2.71 ft at 12:16AM Nov 29, 2021Observed: 2.68 ft at 12:45AM Nov 29, 2021Observed: 2.68 ft at 1:00AM Nov 29, 2021Observed: 2.66 ft at 1:15AM Nov 29, 2021Observed: 2.67 ft at 1:30AM Nov 29, 2021Observed: 2.65 ft at 1:45AM Nov 29, 2021Observed: 2.66 ft at 2:00AM Nov 29, 2021Observed: 2.65 ft at 2:15AM Nov 29, 2021Observed: 2.68 ft at 2:30AM Nov 29, 2021Observed: 2.69 ft at 2:45AM Nov 29, 2021Observed: 2.73 ft at 3:00AM Nov 29, 2021Observed: 2.71 ft at 3:15AM Nov 29, 2021Observed: 2.74 ft at 3:30AM Nov 29, 2021Observed: 2.72 ft at 3:45AM Nov 29, 2021Observed: 2.69 ft at 4:00AM Nov 29, 2021Observed: 2.67 ft at 4:15AM Nov 29, 2021Observed: 2.64 ft at 4:30AM Nov 29, 2021Observed: 2.64 ft at 5:45AM Nov 29, 2021Observed: 2.67 ft at 6:00AM Nov 29, 2021Observed: 2.64 ft at 6:15AM Nov 29, 2021Observed: 2.67 ft at 6:30AM Nov 29, 2021Observed: 2.65 ft at 6:45AM Nov 29, 2021Observed: 2.67 ft at 7:00AM Nov 29, 2021Observed: 2.64 ft at 7:15AM Nov 29, 2021Observed: 2.66 ft at 7:30AM Nov 29, 2021Observed: 2.64 ft at 7:45AM Nov 29, 2021Observed: 2.66 ft at 8:00AM Nov 29, 2021Observed: 2.65 ft at 8:15AM Nov 29, 2021Observed: 2.58 ft at 8:30AM Nov 29, 2021Observed: 2.58 ft at 8:45AM Nov 29, 2021Observed: 2.69 ft at 9:00AM Nov 29, 2021Observed: 2.59 ft at 9:15AM Nov 29, 2021Observed: 2.54 ft at 9:30AM Nov 29, 2021Observed: 2.48 ft at 10:45AM Nov 29, 2021Observed: 2.46 ft at 11:00AM Nov 29, 2021Observed: 2.45 ft at 11:15AM Nov 29, 2021Observed: 2.42 ft at 11:30AM Nov 29, 2021Observed: 2.39 ft at 11:45AM Nov 29, 2021Observed: 2.41 ft at 12:00PM Nov 29, 2021Observed: 2.4 ft at 12:15PM Nov 29, 2021Observed: 2.4 ft at 12:30PM Nov 29, 2021Observed: 2.39 ft at 12:45PM Nov 29, 2021Observed: 2.37 ft at 1:00PM Nov 29, 2021Observed: 2.37 ft at 1:15PM Nov 29, 2021Observed: 2.35 ft at 1:30PM Nov 29, 2021Observed: 2.35 ft at 1:45PM Nov 29, 2021Observed: 2.33 ft at 2:00PM Nov 29, 2021Observed: 2.32 ft at 2:15PM Nov 29, 2021Observed: 2.31 ft at 2:30PM Nov 29, 2021Observed: 2.29 ft at 2:45PM Nov 29, 2021Observed: 2.3 ft at 3:00PM Nov 29, 2021Observed: 2.28 ft at 3:15PM Nov 29, 2021Observed: 2.28 ft at 3:30PM Nov 29, 2021Observed: 2.26 ft at 3:45PM Nov 29, 2021Observed: 2.25 ft at 4:00PM Nov 29, 2021Observed: 2.23 ft at 4:15PM Nov 29, 2021Observed: 2.27 ft at 4:21PM Nov 29, 2021Observed: 2.26 ft at 4:30PM Nov 29, 2021Observed: 2.24 ft at 4:45PM Nov 29, 2021Observed: 2.24 ft at 5:00PM Nov 29, 2021Observed: 2.22 ft at 5:15PM Nov 29, 2021Observed: 2.23 ft at 5:30PM Nov 29, 2021Observed: 2.22 ft at 5:45PM Nov 29, 2021Observed: 2.2 ft at 6:00PM Nov 29, 2021Observed: 2.17 ft at 6:15PM Nov 29, 2021Observed: 2.19 ft at 6:30PM Nov 29, 2021Observed: 2.17 ft at 6:45PM Nov 29, 2021Observed: 2.19 ft at 7:00PM Nov 29, 2021Observed: 2.17 ft at 7:15PM Nov 29, 2021Observed: 2.18 ft at 7:30PM Nov 29, 2021USGS--Water Resources of the United StatesCIAP4(plotting HGIRG) Graph Created (8:51PM Nov 29, 2021)ObservedLatest observed value: 2.18 ft at 7:30 PM AST 29-Nov-2021. 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
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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: 18.322438° N, Longitude: 66.459564° 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
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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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