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Stream Elevation Sensor 484
485 Brays Bayou @ SH 6
Sensor ID 484
Sensor Type Bubbler
Installed 1/21/1999
Flooding Likely 81.00'
Flooding Possible 78.00'
Bottom of Stream 67.00'
Tip of Orifice 67.36'
Measuring Plate 85.69'
Benchmark 82.35'
RM 040295R2 stamped 040295R2 located on the downstream side on top of a concrete pad north side of channel. , 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -2.0'
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 484 is 67.71'
Reading on 11/18/2020 10:38 PM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
48411/18/2020 10:38 PM67.71'
48411/18/2020 6:38 PM67.68'
48411/18/2020 2:38 PM67.68'
48411/18/2020 10:38 AM67.65'
48411/18/2020 6:38 AM67.63'
48411/18/2020 2:38 AM67.68'
Flood Frequency
Elevation
10% (10-year)80.70'
2% (50-year)82.60'
1% (100-year)82.90'
.2% (500-year)83.90'
Historical Storm
Date
Event
Elevation
8/18/1983Alicia78.70'
9/19/1983 79.40'
10/18/1994 78.60'
9/11/1998Frances79.30'
11/17/2003 77.70'
9/13/2008Ike76.30'
4/28/2009 78.80'
1/9/2012 77.30'
5/26/2015 77.40'
4/18/2016 76.80'
1/18/2017 74.60'
8/27/2017Harvey79.40'
9/21/2020Beta75.80'
High water mark elevations are approximate.
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