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Stream Elevation Sensor 479
480 Keegans Bayou @ Roark Road
Sensor ID 479
Sensor Type USGS Bubbler
Installed 4/26/1984
Flooding Likely 71.60'
Flooding Possible 68.60'
Bottom of Stream 58.50'
Tip of Orifice 59.68'
Measuring Plate 76.34'
External Link USGS
Benchmark 76.35'
RM 040406 stamped D118 BM02 located on the downstream concrete curb at stream centerline, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -2.8'
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 479 is 60.22'
Reading on 11/17/2020 11:36 PM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
47911/17/2020 11:36 PM60.22'
47911/17/2020 10:38 PM60.21'
47911/17/2020 6:38 PM60.19'
47911/17/2020 2:38 PM60.14'
47911/17/2020 12:52 PM60.12'
47911/17/2020 6:38 AM60.22'
47911/17/2020 2:38 AM60.24'
47911/17/2020 12:52 AM60.22'
Flood Frequency
Elevation
10% (10-year)72.10'
2% (50-year)73.50'
1% (100-year)74.10'
.2% (500-year)75.20'
Historical Storm
Date
Event
Elevation
10/18/1994 73.20'
11/17/2003 73.40'
9/13/2008Ike69.40'
4/28/2009 68.90'
1/9/2012 73.30'
5/26/2015 74.50'
4/18/2016 74.30'
8/27/2017Harvey74.20'
9/21/2020Beta72.60'
High water mark elevations are approximate.
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