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Stream Elevation Sensor 413
410 Brays Bayou @ Lawndale Street
Sensor ID 413
Sensor Type Radar
Installed 4/10/1985
Flooding Likely 14.50'
Flooding Possible 11.50'
Bottom of Stream -15.40'
Tip of Orifice 33.40'
Benchmark 27.07'
RM 040030R stamped 040030R is located on the downstream sidewalk near north end bridge abutment. 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -0.6'
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 413 is 0.73'
Reading on 11/27/2025 4:32 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
41311/27/2025 4:32 PM0.73'
41311/27/2025 4:08 PM0.84'
41311/27/2025 3:14 PM0.95'
41311/27/2025 2:38 PM1.06'
41311/27/2025 2:28 PM1.08'
41311/27/2025 2:00 PM1.17'
41311/27/2025 1:24 PM1.27'
41311/27/2025 12:36 PM1.37'
41311/27/2025 12:16 PM1.48'
41311/27/2025 11:26 AM1.61'
41311/27/2025 10:28 AM1.74'
41311/27/2025 10:04 AM1.71'
41311/27/2025 8:58 AM1.83'
41311/27/2025 6:28 AM1.98'
41311/27/2025 6:22 AM1.96'
41311/27/2025 3:20 AM1.86'
41311/27/2025 2:36 AM1.76'
41311/27/2025 2:28 AM1.71'
41311/27/2025 2:04 AM1.66'
41311/27/2025 1:08 AM1.56'
41311/26/2025 11:32 PM1.45'
41311/26/2025 11:10 PM1.35'
41311/26/2025 10:50 PM1.25'
41311/26/2025 10:34 PM1.14'
41311/26/2025 10:28 PM1.02'
41311/26/2025 10:18 PM0.96'
41311/26/2025 10:00 PM0.85'
41311/26/2025 9:52 PM0.75'
41311/26/2025 9:32 PM0.65'
41311/26/2025 8:46 PM0.54'
41311/26/2025 8:08 PM0.42'
41311/26/2025 7:46 PM0.31'
41311/26/2025 7:24 PM0.16'
41311/26/2025 6:38 PM0.05'
41311/26/2025 6:28 PM-0.03'
41311/26/2025 4:54 PM-0.07'
41311/26/2025 3:02 PM0.06'
41311/26/2025 2:28 PM0.20'
41311/26/2025 2:02 PM0.17'
41311/26/2025 1:26 PM0.29'
41311/26/2025 12:48 PM0.42'
41311/26/2025 12:10 PM0.54'
41311/26/2025 10:56 AM0.66'
41311/26/2025 10:28 AM0.75'
41311/26/2025 9:20 AM0.78'
41311/26/2025 8:44 AM0.89'
41311/26/2025 8:30 AM0.99'
41311/26/2025 8:08 AM1.10'
41311/26/2025 7:38 AM1.20'
41311/26/2025 6:52 AM1.34'
41311/26/2025 6:28 AM1.44'
41311/26/2025 4:20 AM1.55'
41311/26/2025 2:52 AM1.65'
41311/26/2025 2:28 AM1.68'
41311/26/2025 12:54 AM1.75'
41311/26/2025 12:26 AM1.63'
41311/26/2025 12:08 AM1.53'
41311/25/2025 11:48 PM1.43'
41311/25/2025 11:20 PM1.32'
41311/25/2025 10:54 PM1.22'
41311/25/2025 10:28 PM1.11'
41311/25/2025 10:14 PM1.00'
41311/25/2025 9:58 PM0.88'
41311/25/2025 9:40 PM0.77'
41311/25/2025 9:28 PM0.66'
41311/25/2025 9:06 PM0.56'
41311/25/2025 8:48 PM0.45'
41311/25/2025 8:06 PM0.34'
41311/25/2025 6:28 PM0.20'
41311/25/2025 5:36 PM0.23'
41311/25/2025 4:34 PM0.33'
Flood Frequency
Elevation
10% (10-year)18.10'
2% (50-year)20.70'
1% (100-year)21.90'
.2% (500-year)24.70'
Historical Storm
Date
Event
Elevation
8/13/1983Alicia16.70'
9/19/1983 17.00'
8/1/1989Chantal13.90'
10/18/1994 17.60'
9/11/1998Frances17.90'
6/9/2001Allison #222.80'
11/17/2003 14.90'
9/13/2008Ike17.00'
4/28/2009 9.20'
1/9/2012 15.60'
5/26/2015 18.40'
4/18/2016 18.00'
1/18/2017 13.40'
8/27/2017Harvey20.70'
9/21/2020Beta12.70'
7/8/2024Beryl19.00'
High water mark elevations are approximate.
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