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Stream Elevation Sensor 1689
1690 Halls Bayou @ Airline Drive
Sensor ID 1689
Sensor Type Bubbler
Installed 2/1/1988
Flooding Likely 74.10'
Flooding Possible 71.10'
Bottom of Stream 59.70'
Tip of Orifice 60.91'
Measuring Plate 79.02'
Benchmark 77.73'
RM 150340 stamped P118 BM13 located on the downstream sidewalk at stream centerline, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -2.10'
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 1689 is 61.51'
Reading on 6/19/2022 3:53 PM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
16896/19/2022 3:53 PM61.51'
16896/19/2022 11:53 AM61.51'
16896/19/2022 7:53 AM61.52'
16896/19/2022 3:53 AM61.57'
16896/18/2022 11:53 PM61.58'
16896/18/2022 7:53 PM61.56'
Flood Frequency
Elevation
10% (10-year)75.20'
2% (50-year)76.10'
1% (100-year)76.50'
.2% (500-year)77.40'
Historical Storm
Date
Event
Elevation
10/1/1949 72.20'
5/21/1970 73.30'
6/11/1973 74.40'
4/18/1976 75.10'
8/18/1983Alicia71.70'
10/25/1984 75.00'
3/4/1992 76.20'
3/12/1997 72.30'
9/11/1998Frances72.50'
6/5/2001Allison #272.30'
6/9/2001Allison #275.90'
10/29/2002 73.50'
11/17/2003 73.60'
12/14/2005 72.10'
6/19/2006 73.60'
10/16/2006 74.40'
9/13/2008Ike76.00'
10/31/2015 72.00'
4/18/2016 75.30'
8/8/2017 74.50'
8/27/2017Harvey77.00'
9/19/2019Imelda75.70'
1/9/2022 74.30'
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.