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Stream Elevation Sensor 379
380 Sims Bayou @ Hiram Clarke Rd
Sensor ID 379
Sensor Type USGS Radar
Installed 6/18/1983
Flooding Likely 50.20'
Flooding Possible 47.20'
Bottom of Stream 26.30'
Tip of Orifice 53.64'
Measuring Plate 56.03'
External Link USGS
Benchmark 53.50'
RM 030115 stamped 030115R located on the downstream sidewalk at north end. 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -1.9'
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 379 is 26.20'
Reading on 9/17/2025 11:26 AM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
3799/17/2025 11:26 AM26.20'
3799/17/2025 7:26 AM26.22'
3799/17/2025 3:26 AM26.32'
3799/16/2025 11:26 PM26.31'
3799/16/2025 8:52 PM26.28'
3799/16/2025 7:26 PM26.23'
3799/16/2025 3:26 PM26.21'
3799/16/2025 11:26 AM26.17'
3799/16/2025 8:46 AM26.17'
3799/16/2025 7:26 AM26.20'
3799/16/2025 3:26 AM26.29'
3799/15/2025 11:26 PM26.28'
3799/15/2025 11:12 PM26.28'
3799/15/2025 7:26 PM26.21'
3799/15/2025 3:26 PM26.18'
Flood Frequency
Elevation
10% (10-year)41.20'
2% (50-year)45.80'
1% (100-year)47.90'
.2% (500-year)51.90'
Historical Storm
Date
Event
Elevation
5/21/1970 48.10'
9/10/1971 45.60'
9/20/1979David49.20'
5/3/1981 47.60'
6/5/1981 44.50'
8/31/1981 51.00'
8/18/1983Alicia49.10'
9/19/1983 50.70'
8/1/1989Chantal50.50'
10/18/1994 50.50'
3/12/1997 47.40'
6/7/2001Allison #249.90'
6/9/2001Allison #252.20'
6/19/2006 38.20'
9/13/2008Ike46.60'
8/27/2017Harvey46.80'
High water mark elevations are approximate.
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