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Hydrograph River at a Glance Download Inundation
San Jacinto River near Sheldon Stage (ft)Flow (kcfs)Highest Observation: 5.87 ft at 5:40PM Jan 31, 2023Observed: 5.84 ft at 6:05PM Jan 31, 2023Observed: 5.75 ft at 6:55PM Jan 31, 2023Observed: 5.64 ft at 8:15PM Jan 31, 2023Observed: 5.53 ft at 9:25PM Jan 31, 2023Observed: 5.49 ft at 10:05PM Jan 31, 2023Observed: 5.43 ft at 10:25PM Jan 31, 2023Observed: 5.32 ft at 11:30PM Jan 31, 2023Observed: 5.22 ft at 12:20AM Feb 01, 2023Observed: 5.11 ft at 1:15AM Feb 01, 2023Observed: 5.05 ft at 2:05AM Feb 01, 2023Observed: 5 ft at 2:20AM Feb 01, 2023Observed: 4.88 ft at 3:20AM Feb 01, 2023Observed: 4.77 ft at 4:20AM Feb 01, 2023Observed: 4.66 ft at 4:55AM Feb 01, 2023Observed: 4.55 ft at 5:55AM Feb 01, 2023Observed: 4.57 ft at 6:05AM Feb 01, 2023Observed: 4.45 ft at 6:45AM Feb 01, 2023Observed: 4.33 ft at 7:50AM Feb 01, 2023Observed: 4.22 ft at 8:25AM Feb 01, 2023Observed: 4.09 ft at 9:20AM Feb 01, 2023Observed: 4.05 ft at 10:05AM Feb 01, 2023Observed: 3.97 ft at 10:15AM Feb 01, 2023Observed: 3.87 ft at 11:00AM Feb 01, 2023Observed: 3.76 ft at 11:55AM Feb 01, 2023Observed: 3.65 ft at 12:55PM Feb 01, 2023Observed: 3.55 ft at 1:50PM Feb 01, 2023Observed: 3.52 ft at 2:05PM Feb 01, 2023Observed: 3.43 ft at 2:45PM Feb 01, 2023Observed: 3.29 ft at 4:30PM Feb 01, 2023Observed: 3.34 ft at 6:05PM Feb 01, 2023Observed: 3.39 ft at 6:10PM Feb 01, 2023Observed: 3.5 ft at 7:45PM Feb 01, 2023Observed: 3.58 ft at 10:05PM Feb 01, 2023Observed: 3.61 ft at 10:20PM Feb 01, 2023Observed: 3.54 ft at 2:05AM Feb 02, 2023Observed: 3.49 ft at 2:35AM Feb 02, 2023Observed: 3.38 ft at 4:05AM Feb 02, 2023Observed: 3.25 ft at 5:25AM Feb 02, 2023Observed: 3.2 ft at 6:05AM Feb 02, 2023Observed: 3.14 ft at 6:35AM Feb 02, 2023Observed: 2.89 ft at 8:55AM Feb 02, 2023Observed: 2.79 ft at 9:40AM Feb 02, 2023Observed: 2.81 ft at 10:05AM Feb 02, 2023Observed: 2.68 ft at 10:35AM Feb 02, 2023Observed: 2.57 ft at 11:20AM Feb 02, 2023Observed: 2.45 ft at 12:15PM Feb 02, 2023Observed: 2.34 ft at 1:10PM Feb 02, 2023Observed: 2.3 ft at 2:05PM Feb 02, 2023Observed: 2.2 ft at 2:25PM Feb 02, 2023Observed: 2.1 ft at 4:45PM Feb 02, 2023Observed: 2.21 ft at 6:00PM Feb 02, 2023Observed: 2.21 ft at 6:05PM Feb 02, 2023Observed: 2.33 ft at 7:05PM Feb 02, 2023Observed: 2.43 ft at 8:15PM Feb 02, 2023Observed: 2.55 ft at 9:35PM Feb 02, 2023Observed: 2.58 ft at 10:05PM Feb 02, 2023Observed: 2.66 ft at 10:40PM Feb 02, 2023Observed: 2.54 ft at 1:40AM Feb 03, 2023Observed: 2.5 ft at 2:05AM Feb 03, 2023Observed: 2.43 ft at 3:00AM Feb 03, 2023Observed: 2.33 ft at 4:15AM Feb 03, 2023Observed: 2.22 ft at 5:25AM Feb 03, 2023Observed: 2.18 ft at 6:05AM Feb 03, 2023Observed: 2.11 ft at 6:40AM Feb 03, 2023Observed: 2 ft at 7:50AM Feb 03, 2023Observed: 1.9 ft at 8:50AM Feb 03, 2023Observed: 1.8 ft at 9:45AM Feb 03, 2023Observed: 1.8 ft at 10:10AM Feb 03, 2023Observed: 1.69 ft at 11:00AM Feb 03, 2023Observed: 1.59 ft at 12:00PM Feb 03, 2023Observed: 1.49 ft at 1:15PM Feb 03, 2023Observed: 1.43 ft at 2:05PM Feb 03, 2023Observed: 1.38 ft at 2:20PM Feb 03, 2023Observed: 1.26 ft at 2:45PM Feb 03, 2023Observed: 1.15 ft at 3:05PM Feb 03, 2023Observed: 1.05 ft at 3:25PM Feb 03, 2023Observed: 0.9 ft at 4:25PM Feb 03, 2023USGS--Water Resources of the United StatesSHLT2(plotting HGIRR) Graph Created (5:07PM Feb 3, 2023)ObservedLatest observed value: 0.9 ft at 4:25 PM CST 3-Feb-2023. Flood Stage is 10 ft
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Tabular Data (UTC)
Tabular Data (CST)
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 San Jacinto River near Sheldon are issued as needed during times of high water, but are not routinely available.

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Upstream Gauge - at Lake Houston Upstream Gauge
Flood Categories (in feet)
Major Flood Stage: 15
Moderate Flood Stage: 13
Flood Stage: 10
Action Stage: 8
Low Stage (in feet): -9999

Historic Crests
(1) 28.72 ft on 08/29/2017
(2) 28.07 ft on 10/19/1994
(3) 21.10 ft on 06/15/1973
(4) 21.08 ft on 05/19/1989
(5) 20.85 ft on 11/15/1998
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(P): Preliminary values subject to further review.

Recent Crests
(1) 19.37 ft on 09/20/2019 (P)
(2) 10.45 ft on 05/08/2019
(3) 28.72 ft on 08/29/2017
(4) 19.33 ft on 05/30/2016
(5) 15.64 ft on 04/21/2016
Show More Recent Crests

(P): Preliminary values subject to further review.

Low Water Records
(1) -2.52 ft on 10/28/1985
(2) -2.48 ft on 03/06/1989
(3) -2.23 ft on 12/24/1989
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Zoom Level:16
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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.
Flood Impacts & Photos Collapse
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15 Major lowland flooding begins.
13 Moderate lowland flooding begins with widespread inundation of the flood plain.
10 Minor lowland flooding begins.
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Latitude: 29.876111° N, Longitude: 95.093611° W, Horizontal Datum: NAD83/WGS84

River Stage
Reference Frame
Gauge Height Flood Stage Uses
NWS stage 0 ft 10 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

Current/Historical Observations:

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NWS Information
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Houston/Galveston Weather Forecast Office
1353 FM 646, Suite 202
Dickinson, TX 77539
(281) 337-5074
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