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San Juan Radar Outage Impacts Precipitation Estimates.. read more here
Hydrograph River at a Glance Download
Rio De La Plata near Toa Alta Stage (ft)Flow (kcfs)Observed: 4.79 ft at 10:15AM Nov 26, 2023Observed: 4.78 ft at 10:30AM Nov 26, 2023Observed: 4.79 ft at 10:45AM Nov 26, 2023Observed: 4.79 ft at 11:00AM Nov 26, 2023Observed: 4.79 ft at 11:15AM Nov 26, 2023Observed: 4.79 ft at 11:30AM Nov 26, 2023Observed: 4.78 ft at 11:45AM Nov 26, 2023Observed: 4.8 ft at 12:00PM Nov 26, 2023Observed: 4.79 ft at 12:15PM Nov 26, 2023Observed: 4.81 ft at 12:30PM Nov 26, 2023Observed: 4.79 ft at 12:45PM Nov 26, 2023Observed: 4.78 ft at 1:00PM Nov 26, 2023Observed: 4.81 ft at 1:15PM Nov 26, 2023Observed: 4.82 ft at 1:30PM Nov 26, 2023Observed: 4.8 ft at 1:45PM Nov 26, 2023Observed: 4.81 ft at 2:00PM Nov 26, 2023Observed: 4.8 ft at 2:15PM Nov 26, 2023Observed: 4.82 ft at 2:30PM Nov 26, 2023Observed: 4.81 ft at 2:45PM Nov 26, 2023Observed: 4.79 ft at 3:00PM Nov 26, 2023Observed: 4.81 ft at 3:15PM Nov 26, 2023Observed: 4.78 ft at 3:30PM Nov 26, 2023Observed: 4.79 ft at 3:45PM Nov 26, 2023Observed: 4.8 ft at 4:00PM Nov 26, 2023Observed: 4.78 ft at 4:15PM Nov 26, 2023Observed: 4.81 ft at 4:30PM Nov 26, 2023Observed: 4.82 ft at 4:45PM Nov 26, 2023Observed: 4.82 ft at 5:00PM Nov 26, 2023Observed: 4.8 ft at 5:15PM Nov 26, 2023Observed: 4.81 ft at 5:30PM Nov 26, 2023Observed: 4.82 ft at 5:45PM Nov 26, 2023Observed: 4.82 ft at 6:00PM Nov 26, 2023Observed: 4.82 ft at 6:15PM Nov 26, 2023Observed: 4.82 ft at 6:30PM Nov 26, 2023Observed: 4.82 ft at 6:45PM Nov 26, 2023Observed: 4.81 ft at 7:00PM Nov 26, 2023Observed: 4.83 ft at 7:15PM Nov 26, 2023Observed: 4.83 ft at 7:20PM Nov 26, 2023Observed: 4.84 ft at 7:30PM Nov 26, 2023Observed: 4.88 ft at 7:45PM Nov 26, 2023Observed: 4.96 ft at 8:00PM Nov 26, 2023Observed: 5.08 ft at 8:15PM Nov 26, 2023Observed: 5.14 ft at 8:20PM Nov 26, 2023Observed: 5.28 ft at 8:30PM Nov 26, 2023Observed: 5.43 ft at 8:40PM Nov 26, 2023Observed: 5.51 ft at 8:45PM Nov 26, 2023Observed: 5.67 ft at 8:55PM Nov 26, 2023Observed: 5.74 ft at 9:00PM Nov 26, 2023Observed: 5.87 ft at 9:10PM Nov 26, 2023Observed: 5.93 ft at 9:15PM Nov 26, 2023Observed: 5.99 ft at 9:20PM Nov 26, 2023Observed: 6.09 ft at 9:30PM Nov 26, 2023Observed: 6.21 ft at 9:45PM Nov 26, 2023Observed: 6.31 ft at 10:00PM Nov 26, 2023Observed: 6.4 ft at 10:15PM Nov 26, 2023Observed: 6.47 ft at 10:30PM Nov 26, 2023Observed: 6.54 ft at 10:45PM Nov 26, 2023Observed: 6.59 ft at 11:00PM Nov 26, 2023Observed: 6.65 ft at 11:15PM Nov 26, 2023Observed: 6.69 ft at 11:30PM Nov 26, 2023Observed: 6.72 ft at 11:45PM Nov 26, 2023Observed: 6.74 ft at 12:00AM Nov 27, 2023Observed: 6.76 ft at 12:15AM Nov 27, 2023Observed: 6.76 ft at 12:30AM Nov 27, 2023Highest Observation: 6.77 ft at 12:45AM Nov 27, 2023Observed: 6.76 ft at 1:00AM Nov 27, 2023Observed: 6.76 ft at 1:15AM Nov 27, 2023Observed: 6.74 ft at 1:30AM Nov 27, 2023Observed: 6.73 ft at 1:45AM Nov 27, 2023Observed: 6.71 ft at 2:00AM Nov 27, 2023Observed: 6.7 ft at 2:15AM Nov 27, 2023Observed: 6.67 ft at 2:30AM Nov 27, 2023Observed: 6.65 ft at 2:45AM Nov 27, 2023Observed: 6.62 ft at 3:00AM Nov 27, 2023Observed: 6.59 ft at 3:15AM Nov 27, 2023Observed: 6.56 ft at 3:30AM Nov 27, 2023Observed: 6.53 ft at 3:45AM Nov 27, 2023Observed: 6.5 ft at 4:00AM Nov 27, 2023Observed: 6.46 ft at 4:15AM Nov 27, 2023Observed: 6.42 ft at 4:30AM Nov 27, 2023Observed: 6.38 ft at 4:45AM Nov 27, 2023Observed: 6.34 ft at 5:00AM Nov 27, 2023Observed: 6.3 ft at 5:15AM Nov 27, 2023Observed: 6.25 ft at 5:30AM Nov 27, 2023Observed: 6.21 ft at 5:45AM Nov 27, 2023Observed: 6.16 ft at 6:00AM Nov 27, 2023Observed: 6.11 ft at 6:15AM Nov 27, 2023Observed: 6.07 ft at 6:30AM Nov 27, 2023Observed: 6.02 ft at 6:45AM Nov 27, 2023Observed: 5.98 ft at 7:00AM Nov 27, 2023Observed: 5.93 ft at 7:15AM Nov 27, 2023Observed: 5.88 ft at 7:30AM Nov 27, 2023Observed: 5.84 ft at 7:45AM Nov 27, 2023Observed: 5.8 ft at 8:00AM Nov 27, 2023Observed: 5.77 ft at 8:15AM Nov 27, 2023Observed: 5.73 ft at 8:30AM Nov 27, 2023Observed: 5.69 ft at 8:45AM Nov 27, 2023Observed: 5.65 ft at 9:00AM Nov 27, 2023Observed: 5.62 ft at 9:15AM Nov 27, 2023Observed: 5.59 ft at 9:30AM Nov 27, 2023Observed: 5.56 ft at 9:45AM Nov 27, 2023Observed: 5.54 ft at 10:00AM Nov 27, 2023Observed: 5.5 ft at 10:15AM Nov 27, 2023Observed: 5.48 ft at 10:30AM Nov 27, 2023Observed: 5.45 ft at 10:45AM Nov 27, 2023Observed: 5.43 ft at 11:00AM Nov 27, 2023Observed: 5.41 ft at 11:15AM Nov 27, 2023Observed: 5.38 ft at 11:30AM Nov 27, 2023Observed: 5.37 ft at 11:45AM Nov 27, 2023Observed: 5.32 ft at 12:00PM Nov 27, 2023Observed: 5.27 ft at 12:15PM Nov 27, 2023Observed: 5.27 ft at 12:30PM Nov 27, 2023Observed: 5.26 ft at 12:45PM Nov 27, 2023Observed: 5.25 ft at 1:00PM Nov 27, 2023Observed: 5.21 ft at 1:15PM Nov 27, 2023Observed: 5.2 ft at 1:30PM Nov 27, 2023Observed: 5.21 ft at 1:45PM Nov 27, 2023Observed: 5.16 ft at 2:00PM Nov 27, 2023Observed: 5.13 ft at 2:15PM Nov 27, 2023Observed: 5.13 ft at 2:30PM Nov 27, 2023Observed: 5.13 ft at 2:45PM Nov 27, 2023Observed: 5.16 ft at 3:00PM Nov 27, 2023Observed: 5.12 ft at 3:15PM Nov 27, 2023Observed: 5.11 ft at 3:30PM Nov 27, 2023Observed: 5.09 ft at 3:45PM Nov 27, 2023Observed: 5.06 ft at 4:00PM Nov 27, 2023Observed: 5.05 ft at 4:15PM Nov 27, 2023Observed: 5.05 ft at 4:30PM Nov 27, 2023Observed: 5.08 ft at 4:45PM Nov 27, 2023Observed: 5.03 ft at 5:00PM Nov 27, 2023Observed: 5.06 ft at 5:15PM Nov 27, 2023Observed: 5.05 ft at 5:30PM Nov 27, 2023Observed: 5.01 ft at 5:45PM Nov 27, 2023Observed: 5.05 ft at 6:00PM Nov 27, 2023Observed: 5.04 ft at 6:15PM Nov 27, 2023Observed: 5.04 ft at 6:30PM Nov 27, 2023Observed: 5.03 ft at 6:45PM Nov 27, 2023Observed: 5.03 ft at 7:00PM Nov 27, 2023Observed: 5.02 ft at 7:15PM Nov 27, 2023Observed: 5.01 ft at 7:30PM Nov 27, 2023Observed: 5.01 ft at 7:45PM Nov 27, 2023Observed: 5 ft at 8:00PM Nov 27, 2023Observed: 4.99 ft at 8:15PM Nov 27, 2023Observed: 5 ft at 8:30PM Nov 27, 2023Observed: 4.99 ft at 8:45PM Nov 27, 2023Observed: 4.98 ft at 9:00PM Nov 27, 2023Observed: 4.97 ft at 9:15PM Nov 27, 2023Observed: 4.97 ft at 9:30PM Nov 27, 2023Observed: 4.97 ft at 9:35PM Nov 27, 2023Observed: 4.97 ft at 9:45PM Nov 27, 2023Observed: 4.97 ft at 10:00PM Nov 27, 2023Observed: 4.96 ft at 10:15PM Nov 27, 2023Observed: 4.95 ft at 10:30PM Nov 27, 2023Observed: 4.95 ft at 10:45PM Nov 27, 2023Observed: 4.94 ft at 11:00PM Nov 27, 2023Observed: 4.94 ft at 11:15PM Nov 27, 2023Observed: 4.93 ft at 11:30PM Nov 27, 2023Observed: 4.93 ft at 11:45PM Nov 27, 2023Observed: 4.93 ft at 12:00AM Nov 28, 2023Observed: 4.92 ft at 12:15AM Nov 28, 2023Observed: 4.92 ft at 12:30AM Nov 28, 2023Observed: 4.92 ft at 12:45AM Nov 28, 2023Observed: 4.92 ft at 1:00AM Nov 28, 2023Observed: 4.91 ft at 1:15AM Nov 28, 2023Observed: 4.9 ft at 1:30AM Nov 28, 2023Observed: 4.91 ft at 1:45AM Nov 28, 2023Observed: 4.9 ft at 2:00AM Nov 28, 2023Observed: 4.9 ft at 2:15AM Nov 28, 2023Observed: 4.9 ft at 2:30AM Nov 28, 2023Observed: 4.9 ft at 2:45AM Nov 28, 2023Observed: 4.9 ft at 3:00AM Nov 28, 2023Observed: 4.89 ft at 3:15AM Nov 28, 2023Observed: 4.89 ft at 3:30AM Nov 28, 2023Observed: 4.89 ft at 3:45AM Nov 28, 2023Observed: 4.89 ft at 4:00AM Nov 28, 2023Observed: 4.89 ft at 4:15AM Nov 28, 2023Observed: 4.89 ft at 4:30AM Nov 28, 2023Observed: 4.89 ft at 4:45AM Nov 28, 2023Observed: 4.89 ft at 5:00AM Nov 28, 2023Observed: 4.88 ft at 5:15AM Nov 28, 2023Observed: 4.88 ft at 5:30AM Nov 28, 2023Observed: 4.88 ft at 5:45AM Nov 28, 2023Observed: 4.88 ft at 6:00AM Nov 28, 2023Observed: 4.88 ft at 6:15AM Nov 28, 2023Observed: 4.88 ft at 6:30AM Nov 28, 2023Observed: 4.88 ft at 6:45AM Nov 28, 2023Observed: 4.88 ft at 7:00AM Nov 28, 2023Observed: 4.88 ft at 7:15AM Nov 28, 2023Observed: 4.88 ft at 7:30AM Nov 28, 2023Observed: 4.88 ft at 7:45AM Nov 28, 2023Observed: 4.88 ft at 8:00AM Nov 28, 2023Observed: 4.88 ft at 8:15AM Nov 28, 2023Observed: 4.88 ft at 8:30AM Nov 28, 2023Observed: 4.88 ft at 8:45AM Nov 28, 2023Observed: 4.89 ft at 9:00AM Nov 28, 2023Observed: 4.88 ft at 9:15AM Nov 28, 2023Observed: 4.88 ft at 9:30AM Nov 28, 2023Observed: 4.88 ft at 9:45AM Nov 28, 2023Observed: 4.89 ft at 10:00AM Nov 28, 2023Observed: 4.89 ft at 10:15AM Nov 28, 2023Observed: 4.89 ft at 10:30AM Nov 28, 2023Observed: 4.89 ft at 10:45AM Nov 28, 2023Observed: 4.89 ft at 11:00AM Nov 28, 2023Observed: 4.88 ft at 11:15AM Nov 28, 2023Observed: 4.88 ft at 11:30AM Nov 28, 2023Observed: 4.87 ft at 11:45AM Nov 28, 2023Observed: 4.85 ft at 12:00PM Nov 28, 2023Observed: 4.83 ft at 12:15PM Nov 28, 2023Observed: 4.83 ft at 12:30PM Nov 28, 2023Observed: 4.82 ft at 12:45PM Nov 28, 2023Observed: 4.84 ft at 1:00PM Nov 28, 2023Observed: 4.82 ft at 1:15PM Nov 28, 2023Observed: 4.82 ft at 1:30PM Nov 28, 2023Observed: 4.82 ft at 1:45PM Nov 28, 2023Observed: 4.8 ft at 2:00PM Nov 28, 2023Observed: 4.8 ft at 2:15PM Nov 28, 2023Observed: 4.83 ft at 2:30PM Nov 28, 2023Observed: 4.82 ft at 2:45PM Nov 28, 2023Observed: 4.81 ft at 3:00PM Nov 28, 2023Observed: 4.8 ft at 3:15PM Nov 28, 2023Observed: 4.8 ft at 3:30PM Nov 28, 2023Observed: 4.81 ft at 3:45PM Nov 28, 2023Observed: 4.8 ft at 4:00PM Nov 28, 2023Observed: 4.81 ft at 4:15PM Nov 28, 2023Observed: 4.81 ft at 4:30PM Nov 28, 2023Observed: 4.84 ft at 4:45PM Nov 28, 2023Observed: 4.84 ft at 5:00PM Nov 28, 2023Observed: 4.84 ft at 5:15PM Nov 28, 2023Observed: 4.85 ft at 5:30PM Nov 28, 2023Observed: 4.85 ft at 5:45PM Nov 28, 2023Observed: 4.85 ft at 6:00PM Nov 28, 2023Observed: 4.85 ft at 6:15PM Nov 28, 2023Observed: 4.85 ft at 6:30PM Nov 28, 2023Observed: 4.85 ft at 6:45PM Nov 28, 2023Observed: 4.85 ft at 7:00PM Nov 28, 2023Observed: 4.84 ft at 7:15PM Nov 28, 2023Observed: 4.84 ft at 7:30PM Nov 28, 2023Observed: 4.84 ft at 7:45PM Nov 28, 2023Observed: 4.84 ft at 8:00PM Nov 28, 2023Observed: 4.84 ft at 8:15PM Nov 28, 2023Observed: 4.84 ft at 8:30PM Nov 28, 2023Observed: 4.84 ft at 8:45PM Nov 28, 2023Observed: 4.84 ft at 9:00PM Nov 28, 2023Observed: 4.84 ft at 9:15PM Nov 28, 2023Observed: 4.83 ft at 9:30PM Nov 28, 2023Observed: 4.84 ft at 9:45PM Nov 28, 2023Observed: 4.84 ft at 10:00PM Nov 28, 2023Observed: 4.84 ft at 10:15PM Nov 28, 2023Observed: 4.83 ft at 10:30PM Nov 28, 2023Observed: 4.83 ft at 10:45PM Nov 28, 2023Observed: 4.83 ft at 11:00PM Nov 28, 2023Observed: 4.83 ft at 11:15PM Nov 28, 2023Observed: 4.83 ft at 11:30PM Nov 28, 2023Observed: 4.83 ft at 11:45PM Nov 28, 2023Observed: 4.82 ft at 12:00AM Nov 29, 2023Observed: 4.82 ft at 12:15AM Nov 29, 2023Observed: 4.82 ft at 12:30AM Nov 29, 2023Observed: 4.83 ft at 12:45AM Nov 29, 2023Observed: 4.82 ft at 1:00AM Nov 29, 2023Observed: 4.82 ft at 1:15AM Nov 29, 2023Observed: 4.82 ft at 1:30AM Nov 29, 2023Observed: 4.81 ft at 1:45AM Nov 29, 2023Observed: 4.82 ft at 2:00AM Nov 29, 2023Observed: 4.81 ft at 2:15AM Nov 29, 2023Observed: 4.82 ft at 2:30AM Nov 29, 2023Observed: 4.81 ft at 2:45AM Nov 29, 2023Observed: 4.81 ft at 3:00AM Nov 29, 2023Observed: 4.81 ft at 3:15AM Nov 29, 2023Observed: 4.81 ft at 3:30AM Nov 29, 2023Observed: 4.81 ft at 3:45AM Nov 29, 2023Observed: 4.81 ft at 4:00AM Nov 29, 2023Observed: 4.81 ft at 4:15AM Nov 29, 2023Observed: 4.8 ft at 4:30AM Nov 29, 2023Observed: 4.8 ft at 4:45AM Nov 29, 2023Observed: 4.8 ft at 5:00AM Nov 29, 2023Observed: 4.8 ft at 5:15AM Nov 29, 2023Observed: 4.8 ft at 5:30AM Nov 29, 2023Observed: 4.8 ft at 5:45AM Nov 29, 2023Observed: 4.8 ft at 6:00AM Nov 29, 2023Observed: 4.8 ft at 6:15AM Nov 29, 2023Observed: 4.8 ft at 6:30AM Nov 29, 2023Observed: 4.8 ft at 6:45AM Nov 29, 2023Observed: 4.8 ft at 7:00AM Nov 29, 2023Observed: 4.8 ft at 7:15AM Nov 29, 2023Observed: 4.8 ft at 7:30AM Nov 29, 2023Observed: 4.8 ft at 7:45AM Nov 29, 2023Observed: 4.8 ft at 8:00AM Nov 29, 2023Observed: 4.8 ft at 8:15AM Nov 29, 2023Observed: 4.81 ft at 8:30AM Nov 29, 2023Observed: 4.81 ft at 8:45AM Nov 29, 2023Observed: 4.8 ft at 9:00AM Nov 29, 2023Observed: 4.81 ft at 9:15AM Nov 29, 2023Observed: 4.81 ft at 9:30AM Nov 29, 2023USGS--Water Resources of the United StatesTOAP4(plotting HGIRG) Graph Created (10:06AM Nov 29, 2023)ObservedLatest observed value: 4.81 ft at 9:30 AM AST 29-Nov-2023. Flood Stage is 16 ft
Printable Image
About this graph
Tabular Data (UTC)
Tabular Data (AST)
XML Data
RSS Files
Datum: NGVD29
Metadata
NOTE: Forecasts are not available for the Rio De La Plata near Toa Alta. Only observed stages are available for this point.
Return to Area Map
Upstream Gauge - below La Plata Dam Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 23
Moderate Flood Stage: 19
Flood Stage: 16
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 37.40 ft on 09/13/1928
(2) 36.35 ft on 09/06/1960
(3) 34.40 ft on 06/16/1943
(4) 34.00 ft on 10/09/1970
(5) 33.08 ft on 08/27/1961
Show More Historic Crests

(P): Preliminary values subject to further review.

Recent Crests
(1) 21.95 ft on 04/28/2023 (P)
(2) 16.55 ft on 11/08/2022 (P)
(3) 22.60 ft on 11/06/2022 (P)
(4) 16.72 ft on 10/28/2022 (P)
(5) 16.82 ft on 10/27/2022 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 7.40 ft on 11/19/1993
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.
Flood Impacts & Photos Collapse
If you notice any errors in the below information, please contact our Webmaster
22.04 Carr. 2 flooded - Rio Lajas out of its banksBarrio Chorro de Maguayo flooded
18.53 Flooding in: Carr 165, in front of Urb Lagos De Plata, Sector El 26Villa Calma, Urb Las Gaviotas, Mansion del MarIn Dorado: Flooding in Barrio Mameyal, Sector Costa del Oro
About This Location Collapse

Latitude: 18.409592° N, Longitude: 66.260571° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 16 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 9.15 25.15 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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