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

Hydrograph River at a Glance Download
Lago Loiza near Trujillo Alto Pool (ft)Observed: 133.55 ft at 11:15AM Feb 17, 2018Observed: 133.57 ft at 11:30AM Feb 17, 2018Observed: 133.57 ft at 11:45AM Feb 17, 2018Observed: 133.58 ft at 12:00PM Feb 17, 2018Observed: 133.58 ft at 12:15PM Feb 17, 2018Observed: 133.58 ft at 12:30PM Feb 17, 2018Observed: 133.58 ft at 12:45PM Feb 17, 2018Observed: 133.59 ft at 1:00PM Feb 17, 2018Observed: 133.6 ft at 1:15PM Feb 17, 2018Observed: 133.6 ft at 1:30PM Feb 17, 2018Observed: 133.6 ft at 1:45PM Feb 17, 2018Observed: 133.61 ft at 2:00PM Feb 17, 2018Observed: 133.6 ft at 2:15PM Feb 17, 2018Observed: 133.61 ft at 2:30PM Feb 17, 2018Observed: 133.61 ft at 2:45PM Feb 17, 2018Observed: 133.62 ft at 4:00PM Feb 17, 2018Observed: 133.64 ft at 4:15PM Feb 17, 2018Observed: 133.64 ft at 4:30PM Feb 17, 2018Observed: 133.64 ft at 4:45PM Feb 17, 2018Observed: 133.68 ft at 8:00PM Feb 17, 2018Observed: 133.68 ft at 8:15PM Feb 17, 2018Observed: 133.69 ft at 8:30PM Feb 17, 2018Observed: 133.69 ft at 8:45PM Feb 17, 2018Observed: 133.7 ft at 9:00PM Feb 17, 2018Observed: 133.7 ft at 9:15PM Feb 17, 2018Observed: 133.7 ft at 9:30PM Feb 17, 2018Observed: 133.71 ft at 9:45PM Feb 17, 2018Observed: 133.71 ft at 10:00PM Feb 17, 2018Observed: 133.71 ft at 10:15PM Feb 17, 2018Observed: 133.72 ft at 10:30PM Feb 17, 2018Observed: 133.72 ft at 10:45PM Feb 17, 2018Observed: 133.73 ft at 11:00PM Feb 17, 2018Observed: 133.73 ft at 11:15PM Feb 17, 2018Observed: 133.73 ft at 11:30PM Feb 17, 2018Observed: 133.74 ft at 11:45PM Feb 17, 2018Observed: 133.74 ft at 12:00AM Feb 18, 2018Observed: 133.74 ft at 12:15AM Feb 18, 2018Observed: 133.74 ft at 12:30AM Feb 18, 2018Observed: 133.75 ft at 12:45AM Feb 18, 2018Observed: 133.76 ft at 2:00AM Feb 18, 2018Observed: 133.77 ft at 2:15AM Feb 18, 2018Observed: 133.77 ft at 2:30AM Feb 18, 2018Observed: 133.78 ft at 2:45AM Feb 18, 2018Observed: 133.78 ft at 3:00AM Feb 18, 2018Observed: 133.78 ft at 3:15AM Feb 18, 2018Observed: 133.79 ft at 3:30AM Feb 18, 2018Observed: 133.79 ft at 3:45AM Feb 18, 2018Observed: 133.8 ft at 5:00AM Feb 18, 2018Observed: 133.8 ft at 5:15AM Feb 18, 2018Observed: 133.81 ft at 5:30AM Feb 18, 2018Observed: 133.8 ft at 5:45AM Feb 18, 2018Observed: 133.81 ft at 6:00AM Feb 18, 2018Observed: 133.81 ft at 6:15AM Feb 18, 2018Observed: 133.82 ft at 6:30AM Feb 18, 2018Observed: 133.82 ft at 6:45AM Feb 18, 2018Observed: 133.82 ft at 7:00AM Feb 18, 2018Observed: 133.83 ft at 7:15AM Feb 18, 2018Observed: 133.83 ft at 7:30AM Feb 18, 2018Observed: 133.83 ft at 7:45AM Feb 18, 2018Observed: 133.83 ft at 8:00AM Feb 18, 2018Observed: 133.83 ft at 8:15AM Feb 18, 2018Observed: 133.83 ft at 8:30AM Feb 18, 2018Observed: 133.84 ft at 8:45AM Feb 18, 2018Observed: 133.85 ft at 11:00AM Feb 18, 2018Observed: 133.85 ft at 11:15AM Feb 18, 2018Observed: 133.87 ft at 11:30AM Feb 18, 2018Observed: 133.86 ft at 11:45AM Feb 18, 2018Observed: 133.86 ft at 12:00PM Feb 18, 2018Observed: 133.86 ft at 12:15PM Feb 18, 2018Observed: 133.86 ft at 12:30PM Feb 18, 2018Observed: 133.87 ft at 12:45PM Feb 18, 2018Observed: 133.88 ft at 1:00PM Feb 18, 2018Observed: 133.88 ft at 1:15PM Feb 18, 2018Observed: 133.88 ft at 1:30PM Feb 18, 2018Observed: 133.88 ft at 1:45PM Feb 18, 2018Observed: 133.91 ft at 5:00PM Feb 18, 2018Observed: 133.92 ft at 5:15PM Feb 18, 2018Observed: 133.92 ft at 5:30PM Feb 18, 2018Observed: 133.92 ft at 5:45PM Feb 18, 2018Observed: 133.92 ft at 6:00PM Feb 18, 2018Observed: 133.92 ft at 6:15PM Feb 18, 2018Observed: 133.93 ft at 6:30PM Feb 18, 2018Observed: 133.93 ft at 6:45PM Feb 18, 2018Observed: 133.93 ft at 7:00PM Feb 18, 2018Observed: 133.93 ft at 7:15PM Feb 18, 2018Observed: 133.93 ft at 7:30PM Feb 18, 2018Observed: 133.93 ft at 7:45PM Feb 18, 2018Observed: 133.94 ft at 8:00PM Feb 18, 2018Observed: 133.94 ft at 8:15PM Feb 18, 2018Observed: 133.94 ft at 8:30PM Feb 18, 2018Observed: 133.94 ft at 8:45PM Feb 18, 2018Observed: 133.97 ft at 11:00PM Feb 18, 2018Observed: 133.97 ft at 11:15PM Feb 18, 2018Observed: 133.97 ft at 11:30PM Feb 18, 2018Observed: 133.97 ft at 11:45PM Feb 18, 2018Observed: 133.98 ft at 1:00AM Feb 19, 2018Observed: 133.98 ft at 1:15AM Feb 19, 2018Observed: 133.98 ft at 1:30AM Feb 19, 2018Observed: 133.98 ft at 1:45AM Feb 19, 2018Observed: 133.99 ft at 3:00AM Feb 19, 2018Observed: 133.99 ft at 3:15AM Feb 19, 2018Observed: 133.99 ft at 3:30AM Feb 19, 2018Observed: 134 ft at 3:45AM Feb 19, 2018Observed: 134 ft at 4:00AM Feb 19, 2018Observed: 134.01 ft at 4:15AM Feb 19, 2018Observed: 134 ft at 4:30AM Feb 19, 2018Observed: 134.01 ft at 4:45AM Feb 19, 2018Observed: 134.01 ft at 5:00AM Feb 19, 2018Observed: 134.01 ft at 5:15AM Feb 19, 2018Observed: 134.01 ft at 5:30AM Feb 19, 2018Observed: 134.01 ft at 5:45AM Feb 19, 2018Observed: 134.02 ft at 6:00AM Feb 19, 2018Observed: 134.02 ft at 6:15AM Feb 19, 2018Observed: 134.02 ft at 6:30AM Feb 19, 2018Observed: 134.02 ft at 6:45AM Feb 19, 2018Observed: 134.02 ft at 7:00AM Feb 19, 2018Observed: 134.03 ft at 7:15AM Feb 19, 2018Observed: 134.03 ft at 7:30AM Feb 19, 2018Observed: 134.03 ft at 7:45AM Feb 19, 2018Observed: 134.04 ft at 10:00AM Feb 19, 2018Observed: 134.04 ft at 10:15AM Feb 19, 2018Observed: 134.05 ft at 10:30AM Feb 19, 2018Observed: 134.03 ft at 10:45AM Feb 19, 2018Observed: 134.04 ft at 11:00AM Feb 19, 2018Observed: 134.05 ft at 11:15AM Feb 19, 2018Observed: 134.05 ft at 11:30AM Feb 19, 2018Observed: 134.05 ft at 11:45AM Feb 19, 2018Observed: 134.05 ft at 12:00PM Feb 19, 2018Observed: 134.04 ft at 12:15PM Feb 19, 2018Observed: 134.06 ft at 12:30PM Feb 19, 2018Observed: 134.06 ft at 12:45PM Feb 19, 2018Observed: 134.06 ft at 1:00PM Feb 19, 2018Observed: 134.05 ft at 1:15PM Feb 19, 2018Observed: 134.06 ft at 1:30PM Feb 19, 2018Observed: 134.06 ft at 1:45PM Feb 19, 2018Observed: 134.1 ft at 8:00PM Feb 19, 2018Observed: 134.1 ft at 8:15PM Feb 19, 2018Observed: 134.1 ft at 8:30PM Feb 19, 2018Observed: 134.1 ft at 8:45PM Feb 19, 2018Observed: 134.11 ft at 9:00PM Feb 19, 2018Observed: 134.11 ft at 9:15PM Feb 19, 2018Observed: 134.12 ft at 9:30PM Feb 19, 2018Observed: 134.11 ft at 9:45PM Feb 19, 2018Observed: 134.11 ft at 10:00PM Feb 19, 2018Observed: 134.12 ft at 10:15PM Feb 19, 2018Observed: 134.12 ft at 10:30PM Feb 19, 2018Observed: 134.12 ft at 10:45PM Feb 19, 2018Observed: 134.13 ft at 12:00AM Feb 20, 2018Observed: 134.13 ft at 12:15AM Feb 20, 2018Observed: 134.13 ft at 12:30AM Feb 20, 2018Observed: 134.14 ft at 12:45AM Feb 20, 2018Observed: 134.13 ft at 1:00AM Feb 20, 2018Observed: 134.14 ft at 1:15AM Feb 20, 2018Observed: 134.14 ft at 1:30AM Feb 20, 2018Observed: 134.14 ft at 1:45AM Feb 20, 2018Observed: 134.14 ft at 2:00AM Feb 20, 2018Observed: 134.14 ft at 2:15AM Feb 20, 2018Observed: 134.14 ft at 2:30AM Feb 20, 2018Observed: 134.15 ft at 2:45AM Feb 20, 2018Observed: 134.15 ft at 3:00AM Feb 20, 2018Observed: 134.15 ft at 3:15AM Feb 20, 2018Observed: 134.15 ft at 3:30AM Feb 20, 2018Observed: 134.15 ft at 3:45AM Feb 20, 2018Observed: 134.15 ft at 4:00AM Feb 20, 2018Observed: 134.15 ft at 4:15AM Feb 20, 2018Observed: 134.15 ft at 4:30AM Feb 20, 2018Observed: 134.15 ft at 4:45AM Feb 20, 2018Observed: 134.17 ft at 6:00AM Feb 20, 2018Observed: 134.17 ft at 6:15AM Feb 20, 2018Observed: 134.17 ft at 6:30AM Feb 20, 2018Observed: 134.17 ft at 6:45AM Feb 20, 2018Observed: 134.19 ft at 9:00AM Feb 20, 2018Observed: 134.19 ft at 9:15AM Feb 20, 2018Observed: 134.19 ft at 9:30AM Feb 20, 2018Highest Observation: 134.2 ft at 9:45AM Feb 20, 2018USGS--Water Resources of the United StatesPLOP4(plotting HPIRG) Graph Created (11:05AM Feb 20, 2018)ObservedLatest observed value: 134.2 ft at 9:45 AM AST 20-Feb-2018. Flood Stage is 136 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 Lago Loiza near Trujillo Alto. Only observed stages are available for this point.
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Upstream Locations Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 140
Moderate Flood Stage: 138
Flood Stage: 136
Action Stage: 134
Low Stage (in feet): 0

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.

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: 18.330278° N, Longitude: 66.016667° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 136 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 135 ft 271 ft  

Current/Historical Observations:

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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
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San Juan Weather Forecast Office
4000 Carreterra 190
San Juan, PR 00979
(787) 253-4586
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Page last modified: 21-Dec-2016 10:38 PM
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