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San Juan Radar Outage Impacts Precipitation Estimates.. read more here

Hydrograph River at a Glance Download
Rio Bayamon below Lago de Cidra Dam Stage (ft)Flow (kcfs)Observed: 5.89 ft at 6:30AM Mar 25, 2024Observed: 5.89 ft at 6:45AM Mar 25, 2024Observed: 5.89 ft at 7:00AM Mar 25, 2024Observed: 5.88 ft at 7:10AM Mar 25, 2024Observed: 5.89 ft at 7:15AM Mar 25, 2024Observed: 5.88 ft at 7:30AM Mar 25, 2024Observed: 5.88 ft at 7:45AM Mar 25, 2024Observed: 5.88 ft at 8:00AM Mar 25, 2024Observed: 5.88 ft at 8:15AM Mar 25, 2024Observed: 5.88 ft at 8:30AM Mar 25, 2024Observed: 5.89 ft at 8:45AM Mar 25, 2024Observed: 5.94 ft at 9:00AM Mar 25, 2024Observed: 5.95 ft at 9:15AM Mar 25, 2024Observed: 5.94 ft at 9:30AM Mar 25, 2024Observed: 5.93 ft at 9:45AM Mar 25, 2024Observed: 5.91 ft at 10:00AM Mar 25, 2024Observed: 5.9 ft at 10:15AM Mar 25, 2024Observed: 5.89 ft at 10:30AM Mar 25, 2024Observed: 5.89 ft at 10:45AM Mar 25, 2024Observed: 5.9 ft at 11:00AM Mar 25, 2024Observed: 5.91 ft at 11:15AM Mar 25, 2024Observed: 5.9 ft at 11:30AM Mar 25, 2024Observed: 5.9 ft at 11:45AM Mar 25, 2024Observed: 5.91 ft at 12:00PM Mar 25, 2024Observed: 5.92 ft at 12:15PM Mar 25, 2024Observed: 5.93 ft at 12:30PM Mar 25, 2024Observed: 5.93 ft at 12:45PM Mar 25, 2024Observed: 5.94 ft at 1:00PM Mar 25, 2024Observed: 5.95 ft at 1:15PM Mar 25, 2024Observed: 5.96 ft at 1:30PM Mar 25, 2024Observed: 5.95 ft at 1:45PM Mar 25, 2024Observed: 5.95 ft at 2:00PM Mar 25, 2024Observed: 5.95 ft at 2:15PM Mar 25, 2024Observed: 5.95 ft at 2:30PM Mar 25, 2024Observed: 5.95 ft at 2:45PM Mar 25, 2024Observed: 5.94 ft at 3:00PM Mar 25, 2024Observed: 5.92 ft at 3:10PM Mar 25, 2024Observed: 5.92 ft at 3:15PM Mar 25, 2024Observed: 5.89 ft at 3:30PM Mar 25, 2024Observed: 5.93 ft at 3:45PM Mar 25, 2024Observed: 5.96 ft at 4:00PM Mar 25, 2024Observed: 5.97 ft at 4:15PM Mar 25, 2024Observed: 5.97 ft at 4:30PM Mar 25, 2024Observed: 5.96 ft at 4:45PM Mar 25, 2024Observed: 5.95 ft at 5:00PM Mar 25, 2024Observed: 5.94 ft at 5:15PM Mar 25, 2024Observed: 5.93 ft at 5:30PM Mar 25, 2024Observed: 5.94 ft at 5:45PM Mar 25, 2024Observed: 5.94 ft at 6:00PM Mar 25, 2024Observed: 5.97 ft at 6:15PM Mar 25, 2024Observed: 6.06 ft at 6:30PM Mar 25, 2024Observed: 6.14 ft at 6:45PM Mar 25, 2024Observed: 6.15 ft at 7:00PM Mar 25, 2024Observed: 6.18 ft at 7:15PM Mar 25, 2024Observed: 6.24 ft at 7:30PM Mar 25, 2024Observed: 6.3 ft at 7:45PM Mar 25, 2024Highest Observation: 6.38 ft at 8:00PM Mar 25, 2024Observed: 6.37 ft at 8:15PM Mar 25, 2024Observed: 6.26 ft at 8:30PM Mar 25, 2024Observed: 6.15 ft at 8:45PM Mar 25, 2024Observed: 6.08 ft at 9:00PM Mar 25, 2024Observed: 6.04 ft at 9:15PM Mar 25, 2024Observed: 6.01 ft at 9:30PM Mar 25, 2024Observed: 5.98 ft at 9:45PM Mar 25, 2024Observed: 5.96 ft at 10:00PM Mar 25, 2024Observed: 5.94 ft at 10:15PM Mar 25, 2024Observed: 5.93 ft at 10:30PM Mar 25, 2024Observed: 5.92 ft at 10:45PM Mar 25, 2024Observed: 5.91 ft at 11:00PM Mar 25, 2024Observed: 5.9 ft at 11:15PM Mar 25, 2024Observed: 5.9 ft at 11:30PM Mar 25, 2024Observed: 5.9 ft at 11:45PM Mar 25, 2024Observed: 5.89 ft at 12:00AM Mar 26, 2024Observed: 5.89 ft at 12:15AM Mar 26, 2024Observed: 5.89 ft at 12:30AM Mar 26, 2024Observed: 5.89 ft at 12:45AM Mar 26, 2024Observed: 5.89 ft at 1:00AM Mar 26, 2024Observed: 5.9 ft at 1:15AM Mar 26, 2024Observed: 5.92 ft at 1:30AM Mar 26, 2024Observed: 5.95 ft at 1:45AM Mar 26, 2024Observed: 5.95 ft at 2:00AM Mar 26, 2024Observed: 5.95 ft at 2:15AM Mar 26, 2024Observed: 5.94 ft at 2:30AM Mar 26, 2024Observed: 5.92 ft at 2:45AM Mar 26, 2024Observed: 5.91 ft at 3:00AM Mar 26, 2024Observed: 5.9 ft at 3:15AM Mar 26, 2024Observed: 5.89 ft at 3:30AM Mar 26, 2024Observed: 5.88 ft at 3:45AM Mar 26, 2024Observed: 5.88 ft at 4:00AM Mar 26, 2024Observed: 5.88 ft at 4:15AM Mar 26, 2024Observed: 5.88 ft at 4:30AM Mar 26, 2024Observed: 5.88 ft at 4:45AM Mar 26, 2024Observed: 5.88 ft at 5:00AM Mar 26, 2024Observed: 5.88 ft at 5:15AM Mar 26, 2024Observed: 5.88 ft at 5:30AM Mar 26, 2024Observed: 5.87 ft at 5:45AM Mar 26, 2024Observed: 5.85 ft at 6:00AM Mar 26, 2024Observed: 5.85 ft at 6:15AM Mar 26, 2024Observed: 5.86 ft at 6:30AM Mar 26, 2024Observed: 5.89 ft at 6:45AM Mar 26, 2024Observed: 5.9 ft at 7:00AM Mar 26, 2024Observed: 5.91 ft at 7:15AM Mar 26, 2024Observed: 5.92 ft at 7:30AM Mar 26, 2024Observed: 5.91 ft at 7:45AM Mar 26, 2024Observed: 5.91 ft at 8:00AM Mar 26, 2024Observed: 5.9 ft at 8:15AM Mar 26, 2024Observed: 5.89 ft at 8:30AM Mar 26, 2024Observed: 5.89 ft at 8:45AM Mar 26, 2024Observed: 5.88 ft at 9:00AM Mar 26, 2024Observed: 5.88 ft at 9:15AM Mar 26, 2024Observed: 5.88 ft at 9:30AM Mar 26, 2024Observed: 5.88 ft at 9:45AM Mar 26, 2024Observed: 5.89 ft at 10:00AM Mar 26, 2024Observed: 5.89 ft at 10:15AM Mar 26, 2024Observed: 5.9 ft at 10:30AM Mar 26, 2024Observed: 5.91 ft at 10:45AM Mar 26, 2024Observed: 5.93 ft at 11:00AM Mar 26, 2024Observed: 5.92 ft at 11:15AM Mar 26, 2024Observed: 5.92 ft at 11:30AM Mar 26, 2024Observed: 5.91 ft at 11:45AM Mar 26, 2024Observed: 5.91 ft at 12:00PM Mar 26, 2024Observed: 5.91 ft at 12:15PM Mar 26, 2024Observed: 5.92 ft at 12:30PM Mar 26, 2024Observed: 5.93 ft at 12:45PM Mar 26, 2024Observed: 5.92 ft at 1:00PM Mar 26, 2024Observed: 5.92 ft at 1:15PM Mar 26, 2024Observed: 5.92 ft at 1:30PM Mar 26, 2024Observed: 5.92 ft at 1:45PM Mar 26, 2024Observed: 5.91 ft at 2:00PM Mar 26, 2024Observed: 5.9 ft at 2:15PM Mar 26, 2024Observed: 5.9 ft at 2:30PM Mar 26, 2024Observed: 5.9 ft at 2:45PM Mar 26, 2024Observed: 5.9 ft at 3:00PM Mar 26, 2024Observed: 5.89 ft at 3:15PM Mar 26, 2024Observed: 5.88 ft at 3:30PM Mar 26, 2024Observed: 5.87 ft at 3:45PM Mar 26, 2024Observed: 5.86 ft at 4:00PM Mar 26, 2024Observed: 5.85 ft at 4:15PM Mar 26, 2024Observed: 5.84 ft at 4:30PM Mar 26, 2024Observed: 5.83 ft at 4:45PM Mar 26, 2024Observed: 5.83 ft at 5:00PM Mar 26, 2024Observed: 5.83 ft at 5:15PM Mar 26, 2024Observed: 5.83 ft at 5:30PM Mar 26, 2024Observed: 5.83 ft at 5:45PM Mar 26, 2024Observed: 5.83 ft at 6:00PM Mar 26, 2024Observed: 5.83 ft at 6:15PM Mar 26, 2024Observed: 5.83 ft at 6:30PM Mar 26, 2024Observed: 5.83 ft at 6:45PM Mar 26, 2024Observed: 5.84 ft at 7:00PM Mar 26, 2024Observed: 5.86 ft at 7:15PM Mar 26, 2024Observed: 5.87 ft at 7:30PM Mar 26, 2024Observed: 5.88 ft at 7:45PM Mar 26, 2024Observed: 5.88 ft at 8:00PM Mar 26, 2024Observed: 5.88 ft at 8:15PM Mar 26, 2024Observed: 5.88 ft at 8:30PM Mar 26, 2024Observed: 5.88 ft at 8:45PM Mar 26, 2024Observed: 5.88 ft at 9:00PM Mar 26, 2024Observed: 5.88 ft at 9:15PM Mar 26, 2024Observed: 5.88 ft at 9:30PM Mar 26, 2024Observed: 5.88 ft at 9:45PM Mar 26, 2024Observed: 5.88 ft at 10:00PM Mar 26, 2024Observed: 5.88 ft at 10:15PM Mar 26, 2024Observed: 5.88 ft at 10:30PM Mar 26, 2024Observed: 5.88 ft at 10:45PM Mar 26, 2024Observed: 5.88 ft at 11:00PM Mar 26, 2024Observed: 5.88 ft at 11:15PM Mar 26, 2024Observed: 5.88 ft at 11:25PM Mar 26, 2024Observed: 5.88 ft at 11:30PM Mar 26, 2024Observed: 5.88 ft at 11:45PM Mar 26, 2024Observed: 5.87 ft at 12:00AM Mar 27, 2024Observed: 5.86 ft at 12:15AM Mar 27, 2024Observed: 5.85 ft at 12:30AM Mar 27, 2024Observed: 5.86 ft at 12:45AM Mar 27, 2024Observed: 5.88 ft at 1:00AM Mar 27, 2024Observed: 5.91 ft at 1:15AM Mar 27, 2024Observed: 5.92 ft at 1:30AM Mar 27, 2024Observed: 5.93 ft at 1:45AM Mar 27, 2024Observed: 5.94 ft at 2:00AM Mar 27, 2024Observed: 5.94 ft at 2:15AM Mar 27, 2024Observed: 5.94 ft at 2:30AM Mar 27, 2024Observed: 5.95 ft at 2:45AM Mar 27, 2024Observed: 5.95 ft at 3:00AM Mar 27, 2024Observed: 5.95 ft at 3:15AM Mar 27, 2024Observed: 5.94 ft at 3:30AM Mar 27, 2024Observed: 5.94 ft at 3:45AM Mar 27, 2024Observed: 5.93 ft at 4:00AM Mar 27, 2024Observed: 5.91 ft at 4:15AM Mar 27, 2024Observed: 5.9 ft at 4:30AM Mar 27, 2024Observed: 5.9 ft at 4:45AM Mar 27, 2024Observed: 5.91 ft at 5:00AM Mar 27, 2024Observed: 5.93 ft at 5:15AM Mar 27, 2024Observed: 5.95 ft at 5:30AM Mar 27, 2024Observed: 5.96 ft at 5:45AM Mar 27, 2024Observed: 5.97 ft at 6:00AM Mar 27, 2024Observed: 5.97 ft at 6:15AM Mar 27, 2024Observed: 5.96 ft at 6:30AM Mar 27, 2024Observed: 5.95 ft at 6:45AM Mar 27, 2024Observed: 5.93 ft at 7:00AM Mar 27, 2024Observed: 5.92 ft at 7:15AM Mar 27, 2024Observed: 5.92 ft at 7:25AM Mar 27, 2024Observed: 5.92 ft at 7:30AM Mar 27, 2024Observed: 5.92 ft at 7:45AM Mar 27, 2024Observed: 5.92 ft at 8:00AM Mar 27, 2024Observed: 5.91 ft at 8:15AM Mar 27, 2024Observed: 5.91 ft at 8:30AM Mar 27, 2024Observed: 5.91 ft at 8:45AM Mar 27, 2024Observed: 5.91 ft at 9:00AM Mar 27, 2024Observed: 5.91 ft at 9:15AM Mar 27, 2024Observed: 5.9 ft at 9:30AM Mar 27, 2024Observed: 5.9 ft at 9:45AM Mar 27, 2024Observed: 5.91 ft at 10:00AM Mar 27, 2024Observed: 5.91 ft at 10:15AM Mar 27, 2024Observed: 5.91 ft at 10:30AM Mar 27, 2024Observed: 5.91 ft at 10:45AM Mar 27, 2024Observed: 5.9 ft at 11:00AM Mar 27, 2024Observed: 5.9 ft at 11:15AM Mar 27, 2024Observed: 5.9 ft at 11:30AM Mar 27, 2024Observed: 5.9 ft at 11:45AM Mar 27, 2024Observed: 5.91 ft at 12:00PM Mar 27, 2024Observed: 5.92 ft at 12:15PM Mar 27, 2024Observed: 5.92 ft at 12:30PM Mar 27, 2024Observed: 5.91 ft at 12:45PM Mar 27, 2024Observed: 5.9 ft at 1:00PM Mar 27, 2024Observed: 5.9 ft at 1:15PM Mar 27, 2024Observed: 5.9 ft at 1:30PM Mar 27, 2024Observed: 5.9 ft at 1:45PM Mar 27, 2024Observed: 5.9 ft at 2:00PM Mar 27, 2024Observed: 5.89 ft at 2:15PM Mar 27, 2024Observed: 5.89 ft at 2:30PM Mar 27, 2024Observed: 5.89 ft at 2:45PM Mar 27, 2024Observed: 5.89 ft at 3:00PM Mar 27, 2024Observed: 5.88 ft at 3:15PM Mar 27, 2024Observed: 5.88 ft at 3:20PM Mar 27, 2024Observed: 5.88 ft at 3:30PM Mar 27, 2024Observed: 5.88 ft at 3:45PM Mar 27, 2024Observed: 5.86 ft at 4:00PM Mar 27, 2024Observed: 5.86 ft at 4:15PM Mar 27, 2024Observed: 5.86 ft at 4:30PM Mar 27, 2024Observed: 5.87 ft at 4:45PM Mar 27, 2024Observed: 5.88 ft at 5:00PM Mar 27, 2024Observed: 5.88 ft at 5:15PM Mar 27, 2024Observed: 5.88 ft at 5:30PM Mar 27, 2024Observed: 5.87 ft at 5:45PM Mar 27, 2024Observed: 5.87 ft at 6:00PM Mar 27, 2024Observed: 5.88 ft at 6:15PM Mar 27, 2024Observed: 5.88 ft at 6:30PM Mar 27, 2024Observed: 5.87 ft at 6:45PM Mar 27, 2024Observed: 5.86 ft at 7:00PM Mar 27, 2024Observed: 5.86 ft at 7:15PM Mar 27, 2024Observed: 5.87 ft at 7:30PM Mar 27, 2024Observed: 5.87 ft at 7:45PM Mar 27, 2024Observed: 5.86 ft at 8:00PM Mar 27, 2024Observed: 5.85 ft at 8:15PM Mar 27, 2024Observed: 5.85 ft at 8:30PM Mar 27, 2024Observed: 5.85 ft at 8:45PM Mar 27, 2024Observed: 5.86 ft at 9:00PM Mar 27, 2024Observed: 5.87 ft at 9:15PM Mar 27, 2024Observed: 5.87 ft at 9:30PM Mar 27, 2024Observed: 5.87 ft at 9:45PM Mar 27, 2024Observed: 5.87 ft at 10:00PM Mar 27, 2024Observed: 5.86 ft at 10:15PM Mar 27, 2024Observed: 5.85 ft at 10:30PM Mar 27, 2024Observed: 5.86 ft at 10:45PM Mar 27, 2024Observed: 5.87 ft at 11:00PM Mar 27, 2024Observed: 5.88 ft at 11:15PM Mar 27, 2024Observed: 5.88 ft at 11:30PM Mar 27, 2024Observed: 5.88 ft at 11:45PM Mar 27, 2024Observed: 5.88 ft at 12:00AM Mar 28, 2024Observed: 5.88 ft at 12:15AM Mar 28, 2024Observed: 5.88 ft at 12:30AM Mar 28, 2024Observed: 5.88 ft at 12:45AM Mar 28, 2024Observed: 5.88 ft at 1:00AM Mar 28, 2024Observed: 5.88 ft at 1:15AM Mar 28, 2024Observed: 5.88 ft at 1:30AM Mar 28, 2024Observed: 5.87 ft at 1:45AM Mar 28, 2024Observed: 5.88 ft at 2:00AM Mar 28, 2024Observed: 5.9 ft at 2:15AM Mar 28, 2024Observed: 5.92 ft at 2:30AM Mar 28, 2024Observed: 5.93 ft at 2:45AM Mar 28, 2024Observed: 5.93 ft at 3:00AM Mar 28, 2024Observed: 5.93 ft at 3:15AM Mar 28, 2024Observed: 5.93 ft at 3:30AM Mar 28, 2024Observed: 5.93 ft at 3:45AM Mar 28, 2024Observed: 5.94 ft at 4:00AM Mar 28, 2024Observed: 5.94 ft at 4:15AM Mar 28, 2024Observed: 5.94 ft at 4:30AM Mar 28, 2024Observed: 5.95 ft at 4:45AM Mar 28, 2024Observed: 5.95 ft at 5:00AM Mar 28, 2024Observed: 5.94 ft at 5:15AM Mar 28, 2024CIEP4(plotting HGIRG) Graph Created (6:23AM Mar 28, 2024)ObservedLatest observed value: 5.94 ft at 5:15 AM AST 28-Mar-2024. Flood Stage is 15 ft
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About this graph
Tabular Data (UTC)
Tabular Data (AST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts are not available for the Rio Bayamon below Lago de Cidra Dam. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 19
Moderate Flood Stage: 17
Flood Stage: 15
Action Stage: 12
Low Stage (in feet): -9999

Historic Crests
(1) 27.34 ft on 09/10/1996
(2) 19.83 ft on 09/22/1998
(3) 18.37 ft on 09/15/2004
(4) 18.26 ft on 09/20/2017 (P)
(5) 16.56 ft on 07/11/1993
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 18.26 ft on 09/20/2017 (P)
(2) 18.37 ft on 09/15/2004
(3) 9.83 ft on 07/13/2003
(4) 10.31 ft on 11/08/2001
(5) 16.26 ft on 12/05/1999
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 7.55 ft on 11/07/2014
Zoom Level:16
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: 18.200790° N, Longitude: 66.138778° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 15 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 1280 1295 Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  

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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Page last modified: 2-Nov-2020 7:30 PM
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