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Stream Elevation Sensor 439
440 Brays Bayou @ Rice Avenue
Key Map 531U
Sensor ID 439
Sensor Type Radar
Installed 8/10/1984
Flooding Likely 51.30'
Flooding Possible 48.30'
Bottom of Stream 25.88'
Tip of Orifice 60.41'
Benchmark 57.71'
Floodplain Reference Mark Number 040160T is a Brass Disk stamped HCFCD CONTROL on bridge at South Rice Avenue and Brays Bayou located on downstream, east sidewalk of bridge, at stream centerline. NAVD 1988, 2001 Adjusted.
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 439 is 28.64'
Reading on 11/30/2022 6:32 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
43911/30/2022 6:32 PM28.64'
43911/30/2022 3:46 PM28.64'
43911/30/2022 2:32 PM28.69'
43911/30/2022 10:32 AM28.70'
43911/30/2022 6:32 AM28.73'
43911/30/2022 4:18 AM28.75'
43911/30/2022 2:32 AM28.83'
43911/29/2022 10:32 PM28.85'
43911/29/2022 6:32 PM28.88'
43911/29/2022 2:32 PM28.89'
43911/29/2022 11:08 AM28.85'
43911/29/2022 10:32 AM28.88'
43911/29/2022 6:32 AM28.94'
43911/29/2022 4:12 AM28.97'
43911/29/2022 2:32 AM29.02'
43911/28/2022 10:32 PM29.04'
Flood Frequency
Elevation
10% (10-year)50.80'
2% (50-year)52.90'
1% (100-year)54.30'
.2% (500-year)55.70'
Historical Storm
Date
Event
Elevation
6/18/1973 49.10'
8/18/1983Alicia47.40'
9/19/1983 52.50'
8/1/1989Chantal49.00'
10/18/1994 51.40'
9/11/1998Frances47.50'
6/9/2001Allison #250.40'
11/17/2003 51.00'
9/13/2008Ike47.90'
4/28/2009 47.60'
1/9/2012 50.30'
5/26/2015 52.90'
4/18/2016 51.70'
1/18/2017 49.80'
8/27/2017Harvey54.10'
9/21/2020Beta48.10'
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.