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San Juan Radar Outage Impacts Precipitation Estimates.. read more here
Hydrograph River at a Glance Download
Lago Dos Bocas at Arecibo Pool (ft)Observed: 291.23 ft at 7:30AM May 20, 2022Observed: 291.29 ft at 7:45AM May 20, 2022Observed: 291.33 ft at 8:00AM May 20, 2022Observed: 291.35 ft at 8:15AM May 20, 2022Observed: 291.42 ft at 8:30AM May 20, 2022Observed: 291.48 ft at 8:45AM May 20, 2022Observed: 291.54 ft at 9:00AM May 20, 2022Observed: 291.54 ft at 9:15AM May 20, 2022Observed: 291.51 ft at 9:30AM May 20, 2022Observed: 291.58 ft at 9:45AM May 20, 2022Observed: 291.68 ft at 10:00AM May 20, 2022Observed: 291.69 ft at 10:15AM May 20, 2022Observed: 291.71 ft at 10:30AM May 20, 2022Observed: 291.78 ft at 10:45AM May 20, 2022Observed: 291.84 ft at 11:00AM May 20, 2022Observed: 291.89 ft at 11:15AM May 20, 2022Observed: 291.91 ft at 11:30AM May 20, 2022Observed: 291.97 ft at 11:45AM May 20, 2022Observed: 291.97 ft at 12:00PM May 20, 2022Observed: 292.06 ft at 12:15PM May 20, 2022Observed: 292.09 ft at 12:30PM May 20, 2022Observed: 292.09 ft at 12:45PM May 20, 2022Observed: 292.1 ft at 1:00PM May 20, 2022Observed: 292.08 ft at 1:15PM May 20, 2022Observed: 292.13 ft at 1:30PM May 20, 2022Observed: 292.12 ft at 1:45PM May 20, 2022Observed: 292.14 ft at 2:00PM May 20, 2022Observed: 292.18 ft at 2:15PM May 20, 2022Observed: 292.14 ft at 2:30PM May 20, 2022Observed: 292.14 ft at 2:45PM May 20, 2022Observed: 292.17 ft at 3:00PM May 20, 2022Observed: 292.18 ft at 3:15PM May 20, 2022Observed: 292.22 ft at 3:30PM May 20, 2022Observed: 292.16 ft at 3:45PM May 20, 2022Observed: 292.14 ft at 4:00PM May 20, 2022Observed: 292.15 ft at 4:15PM May 20, 2022Observed: 292.15 ft at 4:30PM May 20, 2022Observed: 292.19 ft at 4:45PM May 20, 2022Observed: 292.17 ft at 5:00PM May 20, 2022Observed: 292.2 ft at 5:15PM May 20, 2022Observed: 292.21 ft at 5:30PM May 20, 2022Observed: 292.16 ft at 5:45PM May 20, 2022Observed: 292.2 ft at 6:00PM May 20, 2022Highest Observation: 292.23 ft at 6:15PM May 20, 2022Observed: 292.21 ft at 6:30PM May 20, 2022Observed: 292.21 ft at 6:45PM May 20, 2022Observed: 292.15 ft at 7:00PM May 20, 2022Observed: 292.11 ft at 7:15PM May 20, 2022Observed: 292.06 ft at 7:30PM May 20, 2022Observed: 291.98 ft at 7:45PM May 20, 2022Observed: 291.96 ft at 8:00PM May 20, 2022Observed: 291.93 ft at 8:15PM May 20, 2022Observed: 291.87 ft at 8:30PM May 20, 2022Observed: 291.83 ft at 8:45PM May 20, 2022Observed: 291.73 ft at 9:00PM May 20, 2022Observed: 291.69 ft at 9:15PM May 20, 2022Observed: 291.68 ft at 9:30PM May 20, 2022Observed: 291.68 ft at 9:45PM May 20, 2022Observed: 291.71 ft at 1:00AM May 21, 2022Observed: 291.71 ft at 1:15AM May 21, 2022Observed: 291.71 ft at 1:30AM May 21, 2022Observed: 291.66 ft at 1:45AM May 21, 2022Observed: 291.68 ft at 2:00AM May 21, 2022Observed: 291.68 ft at 2:15AM May 21, 2022Observed: 291.7 ft at 2:30AM May 21, 2022Observed: 291.71 ft at 2:45AM May 21, 2022Observed: 291.71 ft at 3:00AM May 21, 2022Observed: 291.72 ft at 3:15AM May 21, 2022Observed: 291.71 ft at 3:30AM May 21, 2022Observed: 291.72 ft at 3:45AM May 21, 2022Observed: 291.72 ft at 4:00AM May 21, 2022Observed: 291.71 ft at 4:15AM May 21, 2022Observed: 291.72 ft at 4:30AM May 21, 2022Observed: 291.72 ft at 4:45AM May 21, 2022Observed: 291.72 ft at 5:00AM May 21, 2022Observed: 291.71 ft at 5:15AM May 21, 2022Observed: 291.69 ft at 5:30AM May 21, 2022Observed: 291.66 ft at 5:45AM May 21, 2022Observed: 291.69 ft at 6:00AM May 21, 2022Observed: 291.72 ft at 6:15AM May 21, 2022Observed: 291.72 ft at 6:30AM May 21, 2022Observed: 291.72 ft at 6:45AM May 21, 2022Observed: 291.68 ft at 7:00AM May 21, 2022Observed: 291.7 ft at 7:15AM May 21, 2022Observed: 291.68 ft at 7:30AM May 21, 2022Observed: 291.69 ft at 7:45AM May 21, 2022Observed: 291.66 ft at 8:00AM May 21, 2022Observed: 291.7 ft at 8:15AM May 21, 2022Observed: 291.72 ft at 8:30AM May 21, 2022Observed: 291.73 ft at 8:45AM May 21, 2022Observed: 291.73 ft at 9:00AM May 21, 2022Observed: 291.71 ft at 9:15AM May 21, 2022Observed: 291.68 ft at 9:30AM May 21, 2022Observed: 291.7 ft at 9:45AM May 21, 2022Observed: 291.64 ft at 10:00AM May 21, 2022Observed: 291.64 ft at 10:15AM May 21, 2022Observed: 291.64 ft at 10:30AM May 21, 2022Observed: 291.66 ft at 10:45AM May 21, 2022Observed: 291.67 ft at 11:00AM May 21, 2022Observed: 291.7 ft at 11:15AM May 21, 2022Observed: 291.67 ft at 11:30AM May 21, 2022Observed: 291.75 ft at 11:45AM May 21, 2022Observed: 291.76 ft at 12:00PM May 21, 2022Observed: 291.71 ft at 12:15PM May 21, 2022Observed: 291.67 ft at 12:30PM May 21, 2022Observed: 291.68 ft at 12:45PM May 21, 2022Observed: 291.77 ft at 1:00PM May 21, 2022Observed: 291.73 ft at 1:15PM May 21, 2022Observed: 291.71 ft at 1:30PM May 21, 2022Observed: 291.78 ft at 1:45PM May 21, 2022Observed: 291.71 ft at 2:00PM May 21, 2022Observed: 291.72 ft at 2:15PM May 21, 2022Observed: 291.74 ft at 2:30PM May 21, 2022Observed: 291.71 ft at 2:45PM May 21, 2022Observed: 291.72 ft at 3:00PM May 21, 2022Observed: 291.71 ft at 3:15PM May 21, 2022Observed: 291.75 ft at 3:30PM May 21, 2022Observed: 291.79 ft at 3:45PM May 21, 2022Observed: 291.79 ft at 4:00PM May 21, 2022Observed: 291.78 ft at 4:15PM May 21, 2022Observed: 291.77 ft at 4:30PM May 21, 2022Observed: 291.78 ft at 4:45PM May 21, 2022Observed: 291.75 ft at 5:00PM May 21, 2022Observed: 291.8 ft at 5:15PM May 21, 2022Observed: 291.74 ft at 5:30PM May 21, 2022Observed: 291.8 ft at 5:45PM May 21, 2022Observed: 291.78 ft at 6:00PM May 21, 2022Observed: 291.81 ft at 6:15PM May 21, 2022Observed: 291.8 ft at 6:30PM May 21, 2022Observed: 291.81 ft at 6:45PM May 21, 2022Observed: 291.81 ft at 7:00PM May 21, 2022Observed: 291.77 ft at 7:15PM May 21, 2022Observed: 291.73 ft at 7:30PM May 21, 2022Observed: 291.67 ft at 7:45PM May 21, 2022Observed: 291.62 ft at 8:00PM May 21, 2022Observed: 291.57 ft at 8:15PM May 21, 2022Observed: 291.52 ft at 8:30PM May 21, 2022Observed: 291.46 ft at 8:45PM May 21, 2022Observed: 291.41 ft at 9:00PM May 21, 2022Observed: 291.35 ft at 9:15PM May 21, 2022Observed: 291.3 ft at 9:30PM May 21, 2022Observed: 291.24 ft at 9:45PM May 21, 2022Observed: 291.21 ft at 10:00PM May 21, 2022Observed: 291.22 ft at 10:15PM May 21, 2022Observed: 291.19 ft at 10:30PM May 21, 2022Observed: 291.21 ft at 10:45PM May 21, 2022Observed: 291.21 ft at 11:00PM May 21, 2022Observed: 291.19 ft at 11:15PM May 21, 2022Observed: 291.2 ft at 11:30PM May 21, 2022Observed: 291.22 ft at 11:45PM May 21, 2022Observed: 291.22 ft at 12:00AM May 22, 2022Observed: 291.21 ft at 12:15AM May 22, 2022Observed: 291.22 ft at 12:30AM May 22, 2022Observed: 291.21 ft at 12:45AM May 22, 2022Observed: 291.2 ft at 1:00AM May 22, 2022Observed: 291.22 ft at 1:15AM May 22, 2022Observed: 291.22 ft at 1:30AM May 22, 2022Observed: 291.22 ft at 1:45AM May 22, 2022Observed: 291.2 ft at 3:00AM May 22, 2022Observed: 291.18 ft at 3:15AM May 22, 2022Observed: 291.19 ft at 3:30AM May 22, 2022Observed: 291.16 ft at 3:45AM May 22, 2022Observed: 291.18 ft at 4:00AM May 22, 2022Observed: 291.18 ft at 4:15AM May 22, 2022Observed: 291.16 ft at 4:30AM May 22, 2022Observed: 291.17 ft at 4:45AM May 22, 2022Observed: 291.19 ft at 5:00AM May 22, 2022Observed: 291.16 ft at 5:15AM May 22, 2022Observed: 291.17 ft at 5:30AM May 22, 2022Observed: 291.17 ft at 5:45AM May 22, 2022Observed: 291.16 ft at 6:00AM May 22, 2022Observed: 291.2 ft at 6:15AM May 22, 2022Observed: 291.21 ft at 6:30AM May 22, 2022Observed: 291.17 ft at 6:45AM May 22, 2022Observed: 291.17 ft at 7:00AM May 22, 2022Observed: 291.16 ft at 7:15AM May 22, 2022Observed: 291.19 ft at 7:30AM May 22, 2022Observed: 291.18 ft at 7:45AM May 22, 2022Observed: 291.17 ft at 8:00AM May 22, 2022Observed: 291.22 ft at 8:15AM May 22, 2022Observed: 291.22 ft at 8:30AM May 22, 2022Observed: 291.24 ft at 8:45AM May 22, 2022Observed: 291.26 ft at 9:00AM May 22, 2022Observed: 291.19 ft at 9:15AM May 22, 2022Observed: 291.22 ft at 9:30AM May 22, 2022Observed: 291.21 ft at 9:45AM May 22, 2022Observed: 291.24 ft at 10:00AM May 22, 2022Observed: 291.26 ft at 10:15AM May 22, 2022Observed: 291.28 ft at 10:30AM May 22, 2022Observed: 291.29 ft at 10:45AM May 22, 2022Observed: 291.29 ft at 11:00AM May 22, 2022Observed: 291.32 ft at 11:15AM May 22, 2022Observed: 291.29 ft at 11:30AM May 22, 2022Observed: 291.32 ft at 11:45AM May 22, 2022Observed: 291.18 ft at 12:00PM May 22, 2022Observed: 291.2 ft at 12:15PM May 22, 2022Observed: 291.28 ft at 12:30PM May 22, 2022Observed: 291.32 ft at 12:45PM May 22, 2022Observed: 291.3 ft at 1:00PM May 22, 2022Observed: 291.31 ft at 1:15PM May 22, 2022Observed: 291.43 ft at 1:30PM May 22, 2022Observed: 291.21 ft at 1:45PM May 22, 2022Observed: 291.23 ft at 2:00PM May 22, 2022Observed: 291.25 ft at 2:15PM May 22, 2022Observed: 291.21 ft at 2:30PM May 22, 2022Observed: 291.21 ft at 2:45PM May 22, 2022Observed: 291.24 ft at 3:00PM May 22, 2022Observed: 291.33 ft at 3:15PM May 22, 2022Observed: 291.3 ft at 3:30PM May 22, 2022Observed: 291.36 ft at 3:45PM May 22, 2022Observed: 291.37 ft at 4:00PM May 22, 2022Observed: 291.38 ft at 4:15PM May 22, 2022Observed: 291.28 ft at 4:30PM May 22, 2022Observed: 291.33 ft at 4:45PM May 22, 2022Observed: 291.37 ft at 5:00PM May 22, 2022Observed: 291.35 ft at 5:15PM May 22, 2022Observed: 291.33 ft at 5:30PM May 22, 2022Observed: 291.34 ft at 5:45PM May 22, 2022Observed: 291.42 ft at 6:00PM May 22, 2022Observed: 291.41 ft at 6:15PM May 22, 2022Observed: 291.44 ft at 6:30PM May 22, 2022Observed: 291.41 ft at 6:45PM May 22, 2022Observed: 291.44 ft at 7:00PM May 22, 2022Observed: 291.46 ft at 7:15PM May 22, 2022Observed: 291.43 ft at 7:30PM May 22, 2022Observed: 291.41 ft at 7:45PM May 22, 2022Observed: 291.36 ft at 8:00PM May 22, 2022Observed: 291.32 ft at 8:15PM May 22, 2022Observed: 291.27 ft at 8:30PM May 22, 2022Observed: 291.24 ft at 8:45PM May 22, 2022Observed: 291.19 ft at 9:00PM May 22, 2022Observed: 291.12 ft at 9:15PM May 22, 2022Observed: 291.09 ft at 9:30PM May 22, 2022Observed: 291.1 ft at 9:45PM May 22, 2022Observed: 291.1 ft at 10:00PM May 22, 2022Observed: 291.14 ft at 10:15PM May 22, 2022Observed: 291.14 ft at 10:30PM May 22, 2022Observed: 291.16 ft at 10:45PM May 22, 2022Observed: 291.19 ft at 11:00PM May 22, 2022Observed: 291.21 ft at 11:15PM May 22, 2022Observed: 291.19 ft at 11:30PM May 22, 2022Observed: 291.23 ft at 11:45PM May 22, 2022Observed: 291.24 ft at 12:00AM May 23, 2022Observed: 291.23 ft at 12:15AM May 23, 2022Observed: 291.24 ft at 12:30AM May 23, 2022Observed: 291.26 ft at 12:45AM May 23, 2022Observed: 291.27 ft at 1:00AM May 23, 2022Observed: 291.31 ft at 1:15AM May 23, 2022Observed: 291.32 ft at 1:30AM May 23, 2022Observed: 291.28 ft at 1:45AM May 23, 2022Observed: 291.31 ft at 2:00AM May 23, 2022Observed: 291.31 ft at 2:15AM May 23, 2022Observed: 291.34 ft at 2:30AM May 23, 2022Observed: 291.35 ft at 2:45AM May 23, 2022Observed: 291.38 ft at 3:00AM May 23, 2022Observed: 291.36 ft at 3:15AM May 23, 2022Observed: 291.34 ft at 3:30AM May 23, 2022Observed: 291.36 ft at 3:45AM May 23, 2022Observed: 291.4 ft at 4:00AM May 23, 2022Observed: 291.35 ft at 4:15AM May 23, 2022Observed: 291.36 ft at 4:30AM May 23, 2022Observed: 291.37 ft at 4:45AM May 23, 2022Observed: 291.34 ft at 5:00AM May 23, 2022Observed: 291.39 ft at 5:15AM May 23, 2022Observed: 291.42 ft at 5:30AM May 23, 2022Observed: 291.41 ft at 5:45AM May 23, 2022Observed: 291.41 ft at 6:00AM May 23, 2022Observed: 291.4 ft at 6:15AM May 23, 2022Observed: 291.42 ft at 6:30AM May 23, 2022Observed: 291.44 ft at 6:45AM May 23, 2022USGS--Water Resources of the United StatesARGP4(plotting HPIRG) Graph Created (7:22AM May 23, 2022)ObservedLatest observed value: 291.44 ft at 6:45 AM AST 23-May-2022. Flood Stage is 297 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 Lago Dos Bocas at Arecibo. Only observed stages are available for this point.
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Upstream Gauge - below Utuado Upstream Gauge Downstream Gauge Downstream Gauge - near San Pedro
Flood Categories (in feet)
Major Flood Stage: 0
Moderate Flood Stage: 0
Flood Stage: 297
Action Stage: 0
Low Stage (in feet): -9999

Historic Crests

(P): Preliminary values subject to further review.

Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
Currently none available.
Zoom Level:14
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: 18.335439° N, Longitude: 66.666591° W, Horizontal Datum: NAD27

River Stage
Reference Frame		 Gauge Height Flood Stage Uses
NWS stage 0 ft 297 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 29 327 624 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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