Agency
v
Subscribe to
Real-time Alerts
Location
v
Last
v
Reported from
v
Show Current Conditions
Stream Elevation Sensor 1643
1640 Greens Bayou @ US 59
Sensor ID 1643
Sensor Type USGS Radar
Installed 5/11/1984
Flooding Likely 55.00'
Flooding Possible 52.00'
Bottom of Stream 35.40'
Tip of Orifice 64.92'
Measuring Plate 65.61'
External Link USGS
Water Level Forecast Information NWS
Benchmark 65.63'
RM 150097 stamped HCFCD located on the downstream sidewalk of north bound feeder at stream centerline, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -1.5'
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 1643 is 39.60'
Reading on 1/31/2025 6:44 PM
Export to Excel
24 Hours
Sensor
Reading Date
Elevation
16431/31/2025 6:44 PM39.60'
16431/31/2025 5:34 PM39.60'
16431/31/2025 2:44 PM39.65'
16431/31/2025 10:46 AM39.71'
16431/31/2025 10:44 AM39.72'
16431/31/2025 8:34 AM39.81'
16431/31/2025 6:44 AM39.92'
16431/31/2025 5:10 AM40.02'
16431/31/2025 3:38 AM40.14'
16431/31/2025 2:44 AM40.20'
16431/31/2025 1:58 AM40.25'
16431/31/2025 12:26 AM40.37'
16431/30/2025 10:44 PM40.49'
16431/30/2025 7:16 PM40.48'
Flood Frequency
Elevation
10% (10-year)60.60'
2% (50-year)62.30'
1% (100-year)63.10'
.2% (500-year)64.10'
Historical Storm
Date
Event
Elevation
10/1/1949 60.30'
9/11/1961Carla60.80'
3/21/1972 60.40'
6/11/1973 59.80'
4/18/1976 56.90'
9/20/1979David60.00'
8/18/1983Alicia60.30'
10/25/1984 61.20'
5/19/1989 62.80'
6/26/1989Allison #162.40'
3/4/1992 60.90'
10/18/1994 61.70'
6/5/2001Allison #259.80'
6/9/2001Allison #263.50'
10/29/2002 62.70'
11/17/2003 58.00'
12/14/2005 58.40'
6/19/2006 58.10'
10/16/2006 58.10'
9/13/2008Ike58.50'
10/31/2015 56.60'
4/18/2016 59.80'
8/27/2017Harvey62.70'
9/19/2019Imelda59.40'
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.