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Stream Elevation Sensor 764
765 San Jacinto River @ SH 99
Sensor ID 764
Sensor Type USGS Radar
Installed 5/15/2018
Flooding Likely 81.00'
Flooding Possible 78.00'
Bottom of Stream 56.00'
Tip of Orifice 103.08'
External Link USGS
Water Level Forecast Information NWS
Benchmark 97.58'
TXDOT monument on top of concrete 20 ft east of left downstream edge of guardrail, 1988 NAVD, 2001 adjustment.

The Stream Elevation chart showing Stream Elevation Left series.
Cross Section
Stream Elevation for sensor 764 is 64.23'
Reading on 5/9/2025 9:43 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
7645/9/2025 9:43 PM64.23'
7645/9/2025 7:35 PM64.14'
7645/9/2025 5:43 PM64.12'
7645/9/2025 3:35 PM64.05'
7645/9/2025 1:59 PM64.02'
7645/9/2025 11:35 AM63.93'
7645/9/2025 10:59 AM63.92'
7645/9/2025 8:15 AM63.82'
7645/9/2025 7:35 AM63.79'
7645/9/2025 5:59 AM63.72'
7645/9/2025 3:43 AM63.61'
7645/9/2025 3:35 AM63.58'
7645/9/2025 2:13 AM63.51'
7645/9/2025 12:29 AM63.40'
7645/8/2025 11:35 PM63.34'
7645/8/2025 10:43 PM63.30'
7645/8/2025 8:45 PM63.19'
7645/8/2025 7:35 PM63.12'
7645/8/2025 3:35 PM63.07'
7645/8/2025 11:35 AM63.10'
7645/8/2025 11:29 AM63.09'
7645/8/2025 7:35 AM63.16'
7645/8/2025 5:13 AM63.19'
7645/8/2025 3:35 AM63.22'
7645/7/2025 11:35 PM63.28'
Flood Frequency
Elevation
10% (10-year)82.40'
2% (50-year)88.20'
1% (100-year)90.40'
.2% (500-year)94.90'
Historical Storm
Date
Event
Elevation
8/29/2017Harvey94.90'
9/19/2019Imelda79.80'
5/2/2024 88.70'
High water mark elevations are approximate.
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