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Stream Elevation Sensor 273
270 Willow Spring Bayou @ Fairmont Parkway
Key Map 578G
Sensor ID 273
Sensor Type Pressure Transducer
Installed 9/15/2004
Top of Bank (TOB) 19.50'
Bottom of Stream 3.21'
Tip of Orifice 4.06'
Measuring Plate 22.42'
Benchmark 18.91'
RM 020250 stamped 020250 located on the downstream corner abutment below bridge deck of the west bound lanes at southeast corner, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -0.10'
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 273 is 5.10'
Reading on 5/19/2019 12:15 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
2735/19/2019 12:15 PM5.10'
2735/19/2019 11:21 AM5.15'
2735/19/2019 10:45 AM5.20'
2735/19/2019 7:21 AM5.28'
2735/19/2019 3:21 AM5.26'
2735/18/2019 11:21 PM5.30'
2735/18/2019 11:07 PM5.30'
2735/18/2019 7:21 PM5.25'
2735/18/2019 3:21 PM5.27'
2735/18/2019 11:57 AM5.20'
2735/18/2019 11:21 AM5.25'
2735/18/2019 10:35 AM5.30'
2735/18/2019 7:21 AM5.33'
2735/18/2019 3:21 AM5.38'
2735/18/2019 12:07 AM5.40'
2735/17/2019 11:21 PM5.38'
2735/17/2019 7:21 PM5.26'
2735/17/2019 3:21 PM5.27'
2735/17/2019 1:53 PM5.30'
Flood Frequency
Elevation
10% (10-year)18.00'
2% (50-year)19.00'
1% (100-year)19.50'
.2% (500-year)20.90'
Historical Storm
Date
Event
Elevation
4/1/1973 21.50'
7/25/1979Claudette17.30'
9/20/1979 20.10'
6/5/1981 20.00'
8/18/1983Alicia18.40'
6/9/2001Allison21.20'
6/19/2006 17.10'
10/16/2006 19.70'
8/16/2007Erin19.70'
9/13/2008Ike17.40'
4/18/2009 18.60'
8/27/2017Harvey21.40'
High water mark elevations are approximate.
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