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San Juan Radar Outage Impacts Precipitation Estimates.. read more here
Hydrograph River at a Glance Download
Rio Guayanilla near Guayanilla Stage (ft)Flow (kcfs)Highest Observation: 5.04 ft at 7:15PM Dec 04, 2023Highest Observation: 5.04 ft at 7:26PM Dec 04, 2023Observed: 5.03 ft at 7:30PM Dec 04, 2023Highest Observation: 5.04 ft at 7:45PM Dec 04, 2023Observed: 5.03 ft at 8:00PM Dec 04, 2023Observed: 5.03 ft at 8:15PM Dec 04, 2023Observed: 5.03 ft at 8:26PM Dec 04, 2023Observed: 5.03 ft at 8:30PM Dec 04, 2023Observed: 5.03 ft at 8:45PM Dec 04, 2023Observed: 5.03 ft at 9:00PM Dec 04, 2023Observed: 5.03 ft at 9:15PM Dec 04, 2023Observed: 5.03 ft at 9:26PM Dec 04, 2023Observed: 5.03 ft at 9:30PM Dec 04, 2023Observed: 5.03 ft at 9:45PM Dec 04, 2023Observed: 5.03 ft at 10:00PM Dec 04, 2023Observed: 5.03 ft at 10:15PM Dec 04, 2023Observed: 5.03 ft at 10:30PM Dec 04, 2023Observed: 5.03 ft at 10:31PM Dec 04, 2023Observed: 5.03 ft at 10:45PM Dec 04, 2023Observed: 5.03 ft at 11:00PM Dec 04, 2023Observed: 5.03 ft at 11:15PM Dec 04, 2023Observed: 5.03 ft at 11:30PM Dec 04, 2023Observed: 5.03 ft at 11:45PM Dec 04, 2023Observed: 5.03 ft at 12:00AM Dec 05, 2023Observed: 5.03 ft at 12:15AM Dec 05, 2023Observed: 5.03 ft at 12:30AM Dec 05, 2023Observed: 5.03 ft at 12:31AM Dec 05, 2023Observed: 5.02 ft at 12:45AM Dec 05, 2023Observed: 5.03 ft at 1:00AM Dec 05, 2023Observed: 5.03 ft at 1:15AM Dec 05, 2023Observed: 5.03 ft at 1:30AM Dec 05, 2023Observed: 5.02 ft at 1:45AM Dec 05, 2023Observed: 5.03 ft at 2:00AM Dec 05, 2023Observed: 5.02 ft at 2:15AM Dec 05, 2023Observed: 5.02 ft at 2:30AM Dec 05, 2023Observed: 5.02 ft at 2:36AM Dec 05, 2023Observed: 5.02 ft at 2:45AM Dec 05, 2023Observed: 5.02 ft at 3:00AM Dec 05, 2023Observed: 5.02 ft at 3:15AM Dec 05, 2023Observed: 5.02 ft at 3:30AM Dec 05, 2023Observed: 5.02 ft at 3:36AM Dec 05, 2023Observed: 5.02 ft at 3:45AM Dec 05, 2023Observed: 5.02 ft at 4:00AM Dec 05, 2023Observed: 5.02 ft at 4:15AM Dec 05, 2023Observed: 5.02 ft at 4:30AM Dec 05, 2023Observed: 5.02 ft at 4:45AM Dec 05, 2023Observed: 5.03 ft at 5:00AM Dec 05, 2023Observed: 5.02 ft at 5:15AM Dec 05, 2023Observed: 5.02 ft at 5:30AM Dec 05, 2023Observed: 5.02 ft at 5:40AM Dec 05, 2023Observed: 5.03 ft at 5:45AM Dec 05, 2023Observed: 5.02 ft at 6:00AM Dec 05, 2023Observed: 5.03 ft at 6:15AM Dec 05, 2023Observed: 5.03 ft at 6:30AM Dec 05, 2023Observed: 5.02 ft at 6:41AM Dec 05, 2023Observed: 5.03 ft at 6:45AM Dec 05, 2023Observed: 5.03 ft at 7:00AM Dec 05, 2023Observed: 5.03 ft at 7:15AM Dec 05, 2023Observed: 5.03 ft at 7:30AM Dec 05, 2023Observed: 5.03 ft at 7:41AM Dec 05, 2023Observed: 5.03 ft at 7:45AM Dec 05, 2023Observed: 5.03 ft at 8:00AM Dec 05, 2023Observed: 5.03 ft at 8:15AM Dec 05, 2023Observed: 5.03 ft at 8:30AM Dec 05, 2023Observed: 5.03 ft at 8:45AM Dec 05, 2023Observed: 5.03 ft at 8:46AM Dec 05, 2023Observed: 5.03 ft at 9:00AM Dec 05, 2023Observed: 5.03 ft at 9:15AM Dec 05, 2023Observed: 5.03 ft at 9:30AM Dec 05, 2023Observed: 5.02 ft at 9:45AM Dec 05, 2023Observed: 5.02 ft at 10:00AM Dec 05, 2023Observed: 5.03 ft at 10:15AM Dec 05, 2023Observed: 5.03 ft at 10:30AM Dec 05, 2023Observed: 5.03 ft at 10:45AM Dec 05, 2023Observed: 5.03 ft at 10:46AM Dec 05, 2023Observed: 5.03 ft at 11:00AM Dec 05, 2023Observed: 5.03 ft at 11:15AM Dec 05, 2023Observed: 5.03 ft at 11:30AM Dec 05, 2023Observed: 5.03 ft at 11:45AM Dec 05, 2023Observed: 5.03 ft at 11:50AM Dec 05, 2023Observed: 5.03 ft at 12:00PM Dec 05, 2023Observed: 5.03 ft at 12:15PM Dec 05, 2023Observed: 5.02 ft at 12:30PM Dec 05, 2023Observed: 5.03 ft at 12:45PM Dec 05, 2023Observed: 5.03 ft at 12:51PM Dec 05, 2023Observed: 5.03 ft at 1:00PM Dec 05, 2023Observed: 5.02 ft at 1:15PM Dec 05, 2023Observed: 5.02 ft at 1:30PM Dec 05, 2023Observed: 5.03 ft at 1:45PM Dec 05, 2023Observed: 5.02 ft at 1:50PM Dec 05, 2023Observed: 5.02 ft at 2:00PM Dec 05, 2023Observed: 5.03 ft at 2:15PM Dec 05, 2023Observed: 5.03 ft at 2:30PM Dec 05, 2023Observed: 5.02 ft at 2:45PM Dec 05, 2023Observed: 5.03 ft at 2:55PM Dec 05, 2023Observed: 5.03 ft at 3:00PM Dec 05, 2023Observed: 5.03 ft at 3:15PM Dec 05, 2023Observed: 5.03 ft at 3:30PM Dec 05, 2023Observed: 5.03 ft at 3:45PM Dec 05, 2023Observed: 5.03 ft at 3:55PM Dec 05, 2023Observed: 5.03 ft at 4:00PM Dec 05, 2023Observed: 5.02 ft at 4:15PM Dec 05, 2023Observed: 5.02 ft at 4:30PM Dec 05, 2023Observed: 5.02 ft at 4:45PM Dec 05, 2023Observed: 5.02 ft at 4:56PM Dec 05, 2023Observed: 5.02 ft at 5:00PM Dec 05, 2023Observed: 5.02 ft at 5:15PM Dec 05, 2023Observed: 5.02 ft at 5:30PM Dec 05, 2023Observed: 5.01 ft at 5:45PM Dec 05, 2023Observed: 5.02 ft at 6:00PM Dec 05, 2023Observed: 5.02 ft at 6:01PM Dec 05, 2023Observed: 5.02 ft at 6:15PM Dec 05, 2023Observed: 5.02 ft at 6:30PM Dec 05, 2023Observed: 5.01 ft at 6:45PM Dec 05, 2023Observed: 5.01 ft at 7:00PM Dec 05, 2023Observed: 5.01 ft at 7:01PM Dec 05, 2023Observed: 5.02 ft at 7:15PM Dec 05, 2023Observed: 5.02 ft at 7:30PM Dec 05, 2023Observed: 5.02 ft at 7:45PM Dec 05, 2023Observed: 5.02 ft at 8:00PM Dec 05, 2023Observed: 5.01 ft at 8:15PM Dec 05, 2023Observed: 5.02 ft at 8:30PM Dec 05, 2023Observed: 5.01 ft at 8:45PM Dec 05, 2023Observed: 5.01 ft at 9:00PM Dec 05, 2023Observed: 5.02 ft at 9:15PM Dec 05, 2023Observed: 5.02 ft at 9:30PM Dec 05, 2023Observed: 5.02 ft at 9:45PM Dec 05, 2023Observed: 5.01 ft at 10:00PM Dec 05, 2023Observed: 5.02 ft at 10:06PM Dec 05, 2023Observed: 5.02 ft at 10:15PM Dec 05, 2023Observed: 5.01 ft at 10:30PM Dec 05, 2023Observed: 5.01 ft at 10:45PM Dec 05, 2023Observed: 5.02 ft at 11:00PM Dec 05, 2023Observed: 5.01 ft at 11:06PM Dec 05, 2023Observed: 5.01 ft at 11:15PM Dec 05, 2023Observed: 5.01 ft at 11:30PM Dec 05, 2023Observed: 5.01 ft at 11:45PM Dec 05, 2023Observed: 5.01 ft at 12:00AM Dec 06, 2023Observed: 5.01 ft at 12:06AM Dec 06, 2023Observed: 5.01 ft at 12:15AM Dec 06, 2023Observed: 5.02 ft at 12:30AM Dec 06, 2023Observed: 5.01 ft at 12:45AM Dec 06, 2023Observed: 5.01 ft at 1:00AM Dec 06, 2023Observed: 5.01 ft at 1:15AM Dec 06, 2023Observed: 5.01 ft at 1:30AM Dec 06, 2023Observed: 5.01 ft at 1:45AM Dec 06, 2023Observed: 5.01 ft at 2:00AM Dec 06, 2023Observed: 5.01 ft at 2:10AM Dec 06, 2023Observed: 5.01 ft at 2:15AM Dec 06, 2023Observed: 5.01 ft at 2:30AM Dec 06, 2023Observed: 5.01 ft at 2:45AM Dec 06, 2023Observed: 5.01 ft at 3:00AM Dec 06, 2023Observed: 5.01 ft at 3:10AM Dec 06, 2023Observed: 5.01 ft at 3:15AM Dec 06, 2023Observed: 5.01 ft at 3:30AM Dec 06, 2023Observed: 5.01 ft at 3:45AM Dec 06, 2023Observed: 5.01 ft at 4:00AM Dec 06, 2023Observed: 5.01 ft at 4:15AM Dec 06, 2023Observed: 5.01 ft at 4:16AM Dec 06, 2023Observed: 5.01 ft at 4:30AM Dec 06, 2023Observed: 5.01 ft at 4:45AM Dec 06, 2023Observed: 5.01 ft at 5:00AM Dec 06, 2023Observed: 5.01 ft at 5:15AM Dec 06, 2023Observed: 5.01 ft at 5:16AM Dec 06, 2023Observed: 5.01 ft at 5:30AM Dec 06, 2023Observed: 5.01 ft at 5:45AM Dec 06, 2023Observed: 5.02 ft at 6:00AM Dec 06, 2023Observed: 5.01 ft at 6:15AM Dec 06, 2023Observed: 5.02 ft at 6:20AM Dec 06, 2023Observed: 5.01 ft at 6:30AM Dec 06, 2023Observed: 5.01 ft at 6:45AM Dec 06, 2023Observed: 5.02 ft at 7:00AM Dec 06, 2023Observed: 5.02 ft at 7:15AM Dec 06, 2023Observed: 5.01 ft at 7:20AM Dec 06, 2023Observed: 5.01 ft at 7:30AM Dec 06, 2023Observed: 5.02 ft at 7:45AM Dec 06, 2023Observed: 5.02 ft at 8:00AM Dec 06, 2023Observed: 5.02 ft at 8:15AM Dec 06, 2023Observed: 5.02 ft at 8:21AM Dec 06, 2023Observed: 5.02 ft at 8:30AM Dec 06, 2023Observed: 5.02 ft at 8:45AM Dec 06, 2023Observed: 5.02 ft at 9:00AM Dec 06, 2023Observed: 5.02 ft at 9:15AM Dec 06, 2023Observed: 5.02 ft at 9:21AM Dec 06, 2023Observed: 5.02 ft at 9:30AM Dec 06, 2023Observed: 5.02 ft at 9:45AM Dec 06, 2023Observed: 5.02 ft at 10:00AM Dec 06, 2023Observed: 5.02 ft at 10:15AM Dec 06, 2023Observed: 5.02 ft at 10:21AM Dec 06, 2023Observed: 5.02 ft at 10:30AM Dec 06, 2023Observed: 5.02 ft at 10:45AM Dec 06, 2023Observed: 5.02 ft at 11:00AM Dec 06, 2023Observed: 5.02 ft at 11:15AM Dec 06, 2023Observed: 5.02 ft at 11:25AM Dec 06, 2023Observed: 5.02 ft at 11:30AM Dec 06, 2023Observed: 5.02 ft at 11:45AM Dec 06, 2023Observed: 5.02 ft at 12:00PM Dec 06, 2023Observed: 5.02 ft at 12:15PM Dec 06, 2023Observed: 5.02 ft at 12:25PM Dec 06, 2023Observed: 5.02 ft at 12:30PM Dec 06, 2023Observed: 5.02 ft at 12:45PM Dec 06, 2023Observed: 5.02 ft at 1:00PM Dec 06, 2023Observed: 5.02 ft at 1:15PM Dec 06, 2023Observed: 5.02 ft at 1:25PM Dec 06, 2023Observed: 5.02 ft at 1:30PM Dec 06, 2023Observed: 5.02 ft at 1:45PM Dec 06, 2023Observed: 5.01 ft at 2:00PM Dec 06, 2023Observed: 5.01 ft at 2:15PM Dec 06, 2023Observed: 5.01 ft at 2:30PM Dec 06, 2023Observed: 5.02 ft at 2:45PM Dec 06, 2023Observed: 5.02 ft at 3:00PM Dec 06, 2023Observed: 5.02 ft at 3:15PM Dec 06, 2023Observed: 5.01 ft at 3:30PM Dec 06, 2023Observed: 5.01 ft at 3:31PM Dec 06, 2023Observed: 5.02 ft at 3:45PM Dec 06, 2023Observed: 5.02 ft at 4:00PM Dec 06, 2023Observed: 5.02 ft at 4:15PM Dec 06, 2023Observed: 5.01 ft at 4:30PM Dec 06, 2023Observed: 5.01 ft at 4:31PM Dec 06, 2023Observed: 5.01 ft at 4:45PM Dec 06, 2023Observed: 5.01 ft at 5:00PM Dec 06, 2023Observed: 5.01 ft at 5:15PM Dec 06, 2023Observed: 5.01 ft at 5:30PM Dec 06, 2023Observed: 5.01 ft at 5:36PM Dec 06, 2023Observed: 5.01 ft at 5:45PM Dec 06, 2023Observed: 5.01 ft at 6:00PM Dec 06, 2023Observed: 5.01 ft at 6:15PM Dec 06, 2023Observed: 5.01 ft at 6:30PM Dec 06, 2023Observed: 5.01 ft at 6:36PM Dec 06, 2023Observed: 5.01 ft at 6:45PM Dec 06, 2023Observed: 5.01 ft at 7:00PM Dec 06, 2023Observed: 5.01 ft at 7:15PM Dec 06, 2023Observed: 5.01 ft at 7:30PM Dec 06, 2023Observed: 5.01 ft at 7:35PM Dec 06, 2023Observed: 5.01 ft at 7:45PM Dec 06, 2023Observed: 5.01 ft at 8:00PM Dec 06, 2023Observed: 5.01 ft at 8:15PM Dec 06, 2023Observed: 5.01 ft at 8:30PM Dec 06, 2023Observed: 5.01 ft at 8:36PM Dec 06, 2023Observed: 5.01 ft at 8:45PM Dec 06, 2023Observed: 5.01 ft at 9:00PM Dec 06, 2023Observed: 5.01 ft at 9:15PM Dec 06, 2023Observed: 5.01 ft at 9:30PM Dec 06, 2023Observed: 5.01 ft at 9:41PM Dec 06, 2023Observed: 5.01 ft at 9:45PM Dec 06, 2023Observed: 5.01 ft at 10:00PM Dec 06, 2023Observed: 5.01 ft at 10:15PM Dec 06, 2023Observed: 5.01 ft at 10:30PM Dec 06, 2023Observed: 5.01 ft at 10:41PM Dec 06, 2023Observed: 5.01 ft at 10:45PM Dec 06, 2023Observed: 5.01 ft at 11:00PM Dec 06, 2023Observed: 5.01 ft at 11:15PM Dec 06, 2023Observed: 5.01 ft at 11:30PM Dec 06, 2023Observed: 5.01 ft at 11:41PM Dec 06, 2023Observed: 5.01 ft at 11:45PM Dec 06, 2023Observed: 5.01 ft at 12:00AM Dec 07, 2023Observed: 5.01 ft at 12:15AM Dec 07, 2023Observed: 5.01 ft at 12:30AM Dec 07, 2023Observed: 5.01 ft at 12:45AM Dec 07, 2023Observed: 5.01 ft at 12:46AM Dec 07, 2023Observed: 5.01 ft at 1:00AM Dec 07, 2023Observed: 5.01 ft at 1:15AM Dec 07, 2023Observed: 5.01 ft at 1:30AM Dec 07, 2023Observed: 5.01 ft at 1:45AM Dec 07, 2023Observed: 5.01 ft at 2:00AM Dec 07, 2023Observed: 5.01 ft at 2:15AM Dec 07, 2023Observed: 5.01 ft at 2:30AM Dec 07, 2023Observed: 5.01 ft at 2:45AM Dec 07, 2023Observed: 5.01 ft at 2:46AM Dec 07, 2023Observed: 5.01 ft at 3:00AM Dec 07, 2023Observed: 5.01 ft at 3:15AM Dec 07, 2023Observed: 5.01 ft at 3:30AM Dec 07, 2023Observed: 5.01 ft at 3:45AM Dec 07, 2023Observed: 5.01 ft at 4:00AM Dec 07, 2023Observed: 5.01 ft at 4:15AM Dec 07, 2023Observed: 5.01 ft at 4:30AM Dec 07, 2023Observed: 5.01 ft at 4:45AM Dec 07, 2023Observed: 5.01 ft at 4:51AM Dec 07, 2023Observed: 5.01 ft at 5:00AM Dec 07, 2023Observed: 5.01 ft at 5:15AM Dec 07, 2023Observed: 5.01 ft at 5:30AM Dec 07, 2023Observed: 5.01 ft at 5:45AM Dec 07, 2023Observed: 5.01 ft at 5:51AM Dec 07, 2023Observed: 5.01 ft at 6:00AM Dec 07, 2023Observed: 5.01 ft at 6:15AM Dec 07, 2023Observed: 5.01 ft at 6:30AM Dec 07, 2023Observed: 5.01 ft at 6:45AM Dec 07, 2023Observed: 5.01 ft at 7:00AM Dec 07, 2023Observed: 5.01 ft at 7:15AM Dec 07, 2023Observed: 5.01 ft at 7:30AM Dec 07, 2023Observed: 5.02 ft at 7:45AM Dec 07, 2023Observed: 5.01 ft at 7:56AM Dec 07, 2023Observed: 5.01 ft at 8:00AM Dec 07, 2023Observed: 5.02 ft at 8:15AM Dec 07, 2023Observed: 5.01 ft at 8:30AM Dec 07, 2023Observed: 5.01 ft at 8:45AM Dec 07, 2023Observed: 5.01 ft at 8:56AM Dec 07, 2023Observed: 5.02 ft at 9:00AM Dec 07, 2023Observed: 5.02 ft at 9:15AM Dec 07, 2023Observed: 5.02 ft at 9:30AM Dec 07, 2023Observed: 5.01 ft at 9:45AM Dec 07, 2023Observed: 5.01 ft at 10:00AM Dec 07, 2023Observed: 5.02 ft at 10:15AM Dec 07, 2023Observed: 5.01 ft at 10:30AM Dec 07, 2023Observed: 5.02 ft at 10:45AM Dec 07, 2023Observed: 5.01 ft at 11:00AM Dec 07, 2023Observed: 5.01 ft at 11:01AM Dec 07, 2023Observed: 5.01 ft at 11:15AM Dec 07, 2023Observed: 5.02 ft at 11:30AM Dec 07, 2023Observed: 5.02 ft at 11:45AM Dec 07, 2023Observed: 5.02 ft at 12:00PM Dec 07, 2023Observed: 5.02 ft at 12:01PM Dec 07, 2023Observed: 5.02 ft at 12:15PM Dec 07, 2023Observed: 5.02 ft at 12:30PM Dec 07, 2023Observed: 5.02 ft at 12:45PM Dec 07, 2023Observed: 5.01 ft at 1:00PM Dec 07, 2023Observed: 5.01 ft at 1:15PM Dec 07, 2023Observed: 5.01 ft at 1:30PM Dec 07, 2023Observed: 5.02 ft at 1:45PM Dec 07, 2023Observed: 5.01 ft at 2:00PM Dec 07, 2023Observed: 5.01 ft at 2:06PM Dec 07, 2023Observed: 5.02 ft at 2:15PM Dec 07, 2023Observed: 5.01 ft at 2:30PM Dec 07, 2023Observed: 5.02 ft at 2:45PM Dec 07, 2023Observed: 5.01 ft at 3:00PM Dec 07, 2023Observed: 5.01 ft at 3:06PM Dec 07, 2023Observed: 5.01 ft at 3:15PM Dec 07, 2023Observed: 5.01 ft at 3:30PM Dec 07, 2023Observed: 5.01 ft at 3:45PM Dec 07, 2023Observed: 5.01 ft at 4:00PM Dec 07, 2023Observed: 5.01 ft at 4:05PM Dec 07, 2023Observed: 5.01 ft at 4:15PM Dec 07, 2023Observed: 5.01 ft at 4:30PM Dec 07, 2023Observed: 5.01 ft at 4:45PM Dec 07, 2023Observed: 5.01 ft at 5:00PM Dec 07, 2023Observed: 5.01 ft at 5:11PM Dec 07, 2023Observed: 5.01 ft at 5:15PM Dec 07, 2023Observed: 5.01 ft at 6:10PM Dec 07, 2023GYAP4(plotting HGIRG) Graph Created (7:06PM Dec 7, 2023)ObservedLatest observed value: 5.01 ft at 6:10 PM AST 7-Dec-2023. Flood Stage is 12 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 Guayanilla near Guayanilla. Only observed stages are available for this point.
Return to Area Map
Flood Categories (in feet)
Major Flood Stage: 20
Moderate Flood Stage: 16
Flood Stage: 12
Action Stage: 9
Low Stage (in feet): -9999

Historic Crests
(1) 21.89 ft on 05/06/2001
(2) 21.88 ft on 09/22/1998
(3) 21.40 ft on 09/20/2017
(4) 21.40 ft on 09/20/2017
(5) 20.40 ft on 09/12/1982
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 15.49 ft on 09/19/2022 (P)
(2) 21.40 ft on 09/20/2017
(3) 21.40 ft on 09/20/2017
(4) 13.95 ft on 09/18/2004
(5) 10.63 ft on 04/26/2002
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 7.97 ft on 06/21/2021
Zoom Level:15
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: 18.042258° N, Longitude: 66.797784° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 12 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 80 92 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:
Resources Collapse
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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