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Hydrograph River at a Glance Download
Colorado River (TX) at Matagorda Stage (ft)Observed: 3 ft at 4:00AM May 20, 2019Observed: 2.98 ft at 5:00AM May 20, 2019Observed: 3.14 ft at 6:00AM May 20, 2019Observed: 3.04 ft at 7:00AM May 20, 2019Observed: 3.2 ft at 8:00AM May 20, 2019Observed: 3.27 ft at 9:00AM May 20, 2019Observed: 2.98 ft at 10:00AM May 20, 2019Observed: 3.01 ft at 11:00AM May 20, 2019Observed: 3.3 ft at 12:00PM May 20, 2019Observed: 3.07 ft at 1:00PM May 20, 2019Observed: 3.3 ft at 2:00PM May 20, 2019Observed: 3.37 ft at 3:00PM May 20, 2019Observed: 3.3 ft at 4:00PM May 20, 2019Observed: 3.01 ft at 5:00PM May 20, 2019Observed: 2.95 ft at 6:00PM May 20, 2019Observed: 3.16 ft at 7:00PM May 20, 2019Observed: 2.97 ft at 8:00PM May 20, 2019Observed: 3.05 ft at 9:00PM May 20, 2019Observed: 3.02 ft at 10:00PM May 20, 2019Observed: 2.98 ft at 11:00PM May 20, 2019Observed: 2.95 ft at 12:00AM May 21, 2019Observed: 2.9 ft at 1:00AM May 21, 2019Observed: 2.87 ft at 2:00AM May 21, 2019Observed: 2.92 ft at 3:00AM May 21, 2019Observed: 2.96 ft at 4:00AM May 21, 2019Observed: 2.86 ft at 5:00AM May 21, 2019Observed: 3.21 ft at 6:00AM May 21, 2019Observed: 3.35 ft at 7:00AM May 21, 2019Observed: 3.18 ft at 8:00AM May 21, 2019Observed: 3.19 ft at 9:00AM May 21, 2019Observed: 3.27 ft at 10:00AM May 21, 2019Observed: 3.44 ft at 11:00AM May 21, 2019Observed: 3.34 ft at 12:00PM May 21, 2019Highest Observation: 3.54 ft at 1:00PM May 21, 2019Observed: 3.48 ft at 2:00PM May 21, 2019Observed: 3.39 ft at 3:00PM May 21, 2019Observed: 3.06 ft at 4:00PM May 21, 2019Observed: 3.01 ft at 5:00PM May 21, 2019Observed: 2.93 ft at 6:00PM May 21, 2019Observed: 2.77 ft at 7:00PM May 21, 2019Observed: 2.73 ft at 8:00PM May 21, 2019Observed: 2.67 ft at 9:00PM May 21, 2019Observed: 2.59 ft at 10:00PM May 21, 2019Observed: 2.46 ft at 11:00PM May 21, 2019Observed: 2.39 ft at 12:00AM May 22, 2019Observed: 2.29 ft at 1:00AM May 22, 2019Observed: 2.2 ft at 2:00AM May 22, 2019Observed: 2.21 ft at 3:00AM May 22, 2019Observed: 2.13 ft at 4:00AM May 22, 2019Observed: 2.12 ft at 5:00AM May 22, 2019Observed: 2.22 ft at 6:00AM May 22, 2019Observed: 2.34 ft at 7:00AM May 22, 2019Observed: 2.5 ft at 8:00AM May 22, 2019Observed: 2.52 ft at 9:00AM May 22, 2019Observed: 2.51 ft at 10:00AM May 22, 2019Observed: 2.65 ft at 11:00AM May 22, 2019Observed: 2.71 ft at 12:00PM May 22, 2019Observed: 2.8 ft at 1:00PM May 22, 2019Observed: 2.73 ft at 2:00PM May 22, 2019Observed: 2.63 ft at 3:00PM May 22, 2019Observed: 2.64 ft at 4:00PM May 22, 2019Observed: 2.62 ft at 5:00PM May 22, 2019Observed: 2.54 ft at 6:00PM May 22, 2019Observed: 2.54 ft at 7:00PM May 22, 2019Observed: 2.51 ft at 8:00PM May 22, 2019Observed: 2.4 ft at 9:00PM May 22, 2019Observed: 2.3 ft at 10:00PM May 22, 2019Observed: 2.19 ft at 11:00PM May 22, 2019Observed: 2.37 ft at 12:00AM May 23, 2019Observed: 2.26 ft at 1:00AM May 23, 2019Observed: 2.23 ft at 2:00AM May 23, 2019Observed: 2.19 ft at 3:00AM May 23, 2019LCRA-Energy, Water, Community ServicesMRCT2(plotting HGIRZ) Graph Created (3:50AM May 23, 2019)ObservedLatest observed value: 2.19 ft at 3:00 AM CDT 23-May-2019. Flood Stage is 8.8 ft
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Tabular Data (UTC)
Tabular Data (CDT)
XML Data
RSS Files
Datum: NAVD88
NOTE: River forecasts for this location take into account past precipitation and the precipitation amounts expected approximately 24 hours into the future from the forecast issuance time.

NOTE: Forecasts for the Colorado River (TX) at Matagorda are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - near Bay City Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 10.4
Moderate Flood Stage: 9.6
Flood Stage: 8.8
Action Stage: 4.8
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.

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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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18 Top of levy surrounding City of Matagorda.
10.4 Major lowoand flooding begins as water enters homes in River Run subdivision.
8.8 Minor lowland flooding begins as water spills over the bulkhead at homes in the River Run subdivision.
8.19 Right upstream lowbank at north end of River Run subdivision.
4.8 Water is over the low piers at homes in the River Run subdivision at the gage site.
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Latitude: 28.699167° N, Longitude: 95.975000° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 8.8 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 Not Available Not Available Older USGS topographic maps, NGVD29 benchmarks
MSL Not Available Not Available Older USGS topographic maps, MSL benchmarks
Other Not Available Not Available  
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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
National Weather Service
Houston/Galveston Weather Forecast Office
1353 FM 646, Suite 202
Dickinson, TX 77539
(281) 337-5074
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Page last modified: 1-Mar-2019 12:34 AM
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