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Stream Elevation Sensor 468
465 Brays Bayou @ Beltway 8
Sensor ID 468
Sensor Type Bubbler
Installed 1/21/1999
Flooding Likely 66.40'
Flooding Possible 63.40'
Bottom of Stream 41.80'
Tip of Orifice 45.69'
Measuring Plate 73.23'
Benchmark 70.62'
Floodplain Reference Mark Number 040223 is a Brass Disk stamped D100 BM291 on bridge at Beltway 8 feeder N-bound and Brays Bayou located on downstream, east concrete sidewalk of bridge, at stream centerline. 78 to 01 Adjustment -3.0'
As of July 1, 2007, the elevation datum was changed from 1929 NGVD, 1978 adjustment to the 1988 NAVD, 2001 adjustment.

The Stream Elevation chart showing Stream Elevation Left series.
Cross Section
Stream Elevation for sensor 468 is 45.69'
Reading on 2/7/2025 10:34 AM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
4682/7/2025 10:34 AM45.69'
4682/7/2025 6:34 AM45.69'
4682/7/2025 2:34 AM45.69'
4682/6/2025 10:34 PM45.69'
4682/6/2025 6:34 PM45.69'
4682/6/2025 2:34 PM45.69'
Flood Frequency
Elevation
10% (10-year)66.20'
2% (50-year)69.00'
1% (100-year)69.60'
.2% (500-year)71.10'
Historical Storm
Date
Event
Elevation
10/18/1994 63.50'
9/11/1998Frances59.00'
11/17/2003 65.00'
9/13/2008Ike58.70'
4/28/2009 60.90'
1/9/2012 59.60'
5/26/2015 65.90'
4/18/2016 65.80'
1/18/2017 59.10'
8/27/2017Harvey67.50'
9/21/2020Beta57.90'
7/8/2024Beryl60.00'
High water mark elevations are approximate.
The Harris County Flood Control District (HCFCD) provides information via this website as a public service. While HCFCD makes every effort to ensure information is up-to-date, accurate and complete, HCFCD makes no representations, guarantees, or warranties as to the availability, accuracy, completeness, currency or suitability of the information provided via this website. HCFCD specifically disclaims any and all liability for any claims or damages that may result from providing the website or the information it contains. All liability with respect to actions taken or not taken based on the contents of this site is hereby expressly disclaimed.