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Stream Elevation Sensor 438
435 Willow Water Hole @ Willowbend Boulevard
Sensor ID 438
Sensor Type Pressure Transducer
Installed 1/24/2002
Flooding Likely 51.10'
Flooding Possible 48.10'
Bottom of Stream 34.40'
Tip of Orifice 34.70'
Measuring Plate 51.68'
Benchmark 51.69'
RM 040350 stamped D112 0350D located on the downstream sidewalk of west bound lanes at stream centerline, 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 438 is 34.69'
Reading on 11/8/2024 2:32 AM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
43811/8/2024 2:32 AM34.69'
43811/7/2024 10:32 PM34.69'
43811/7/2024 6:32 PM34.69'
43811/7/2024 2:32 PM34.69'
43811/7/2024 10:32 AM34.69'
43811/7/2024 6:32 AM34.69'
Flood Frequency
Elevation
10% (10-year)47.20'
2% (50-year)49.80'
1% (100-year)50.70'
.2% (500-year)52.90'
Historical Storm
Date
Event
Elevation
9/13/2008Ike47.80'
4/28/2009 43.20'
1/9/2012 49.10'
4/27/2013 48.10'
5/26/2015 51.70'
4/18/2016 50.70'
1/18/2017 48.80'
8/27/2017Harvey53.60'
9/21/2020Beta46.70'
7/8/2024Beryl48.40'
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.