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Visit for access to new EXPERIMENTAL products and services from the National Water Center: National Hydrologic Discussion, Area Hydrologic Discussion, Flood Hazard Outlook and the National Water Center Visualization Services, a suite of geospatial services depicting River Forecast Center and National Water Model information.

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Hydrograph River at a Glance Download
Rio Culebrinas at Margarita Damsite nr Aguada Stage (ft)Flow (kcfs)USGS--Water Resources of the United StatesMODP4(plotting HGIRG) Graph Created (6:07PM Sep 26, 2022)Flood Stage is 15.5 ft
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Tabular Data (UTC)
Tabular Data (AST)
XML Data
RSS Files
Datum: NGVD29
NOTE: Forecasts are not available for the Rio Culebrinas at Margarita Damsite nr Aguada. Only observed stages are available for this point.
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Upstream Gauge - at HWY 404 nr Moca Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 18
Moderate Flood Stage: 17
Flood Stage: 15.5
Action Stage: 13
Low Stage (in feet): -9999

Historic Crests
(1) 18.28 ft on 09/22/1998
(2) 17.20 ft on 09/12/2019 (P)
(3) 17.20 ft on 10/13/1999
(4) 16.76 ft on 10/08/2010
(5) 16.68 ft on 09/07/2019 (P)
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(P): Preliminary values subject to further review.

Recent Crests
(1) 15.50 ft on 07/29/2021 (P)
(2) 15.67 ft on 10/12/2020 (P)
(3) 15.50 ft on 10/11/2020 (P)
(4) 15.56 ft on 10/21/2019 (P)
(5) 15.58 ft on 09/25/2019 (P)
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) 14.19 ft on 09/25/2001
Zoom Level:14
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Gauge LocationGauge Map Marker
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.
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16 Culebrinas out of its banks - Road 115 at Barrio Espinar and Road 418 flooded/impassable.OMS/5.2019
15.5 Culebrinas out of its banks - flooding low lying areas along Road 418 at Barrio/Sector Coloso (Sugar Cane Field). Most of the time is impassable. OMS/5.2019
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Latitude: 18.392505° N, Longitude: 67.150825° W, Horizontal Datum: NAD27

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 15.5 ft Interpreting hydrographs and NWS watch, warnings, and forecasts, and inundation maps
Vertical Datum Elevation
(gauge height = 0)
(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 15 30.5 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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NWS Information
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San Juan, PR 00979
(787) 253-4586
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Page last modified: 2-Nov-2020 7:30 PM
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