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Stream Elevation Sensor 643
640 Lateral @ Sens Road
Key Map 540S
Sensor ID 643
Sensor Type Pressure Transducer
Installed 9/16/2004
Flooding Likely 18.00'
Flooding Possible 15.00'
Bottom of Stream 5.90'
Tip of Orifice 8.23'
Measuring Plate 20.74'
Benchmark 20.55'
RM 060005 stamped 060005R located on the downstream sidewalk at south end of bridge. 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -0.4'
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 643 is 8.60'
Reading on 4/26/2024 3:58 AM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
6434/26/2024 3:58 AM8.60'
6434/25/2024 11:58 PM8.61'
6434/25/2024 7:58 PM8.61'
6434/25/2024 3:58 PM8.62'
6434/25/2024 11:58 AM8.62'
6434/25/2024 7:58 AM8.62'
6434/25/2024 3:58 AM8.61'
6434/24/2024 11:58 PM8.61'
6434/24/2024 7:58 PM8.62'
6434/24/2024 3:58 PM8.62'
6434/24/2024 11:58 AM8.62'
6434/24/2024 7:58 AM8.61'
Flood Frequency
Elevation
10% (10-year)18.50'
2% (50-year)19.10'
1% (100-year)19.50'
.2% (500-year)20.50'
Historical Storm
Date
Event
Elevation
8/16/2007Erin13.20'
9/13/2008Ike13.30'
4/18/2009 11.90'
8/27/2017Harvey16.50'
High water mark elevations are approximate.
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