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Lake/Bay Elevation Sensors 103
100 Clear Lake 2nd Outlet @ SH 146
Key Map 620T
Sensor ID 103 104
Sensor Type USGS Bubbler USGS Bubbler
Sensor Position Clear Lake Galveston Bay
Installed 3/13/1998 3/13/1998
Top of Bank (TOB) 7.70' 7.70'
Bottom of Lake/Bay -11.87' -9.00'
Tip of Orifice -3.30' -5.22'
Measuring Plate 7.69' 7.61'
External Link USGS USGS
Benchmark 7.69' 7.69'
RM 010013 stamped A200 BM01 located on the upstream lake side top of concrete walkway at N end of outlet gates, 78 to 01 Adjustment -0.60'
As of July 1, 2007, the elevation datum was changed from 1929 NGVD, 1978 adjustment to the 1988 NAVD, 2001 adjustment.

Gate Status: CLOSED 5/13/2019 1:53 PM
The Lake/Bay Elevation  chart showing Lake/Bay Elevation Left series, Stream Elevation Right series.
Cross Section
Lake/Bay Elevation for sensors
Clear Lake is 2.86' on 5/19/2019 11:27 AM
Galveston Bay is 2.47' on 5/19/2019 1:27 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
1035/19/2019 11:27 AM2.86'
1035/19/2019 11:01 AM2.81'
1035/19/2019 10:21 AM2.75'
1035/19/2019 9:55 AM2.64'
1035/19/2019 9:21 AM2.51'
1035/19/2019 8:39 AM2.40'
1035/19/2019 8:03 AM2.30'
1035/19/2019 7:33 AM2.18'
1035/19/2019 7:19 AM2.08'
1035/19/2019 7:01 AM2.03'
1035/19/2019 6:43 AM1.97'
1035/19/2019 6:13 AM1.86'
1035/19/2019 5:37 AM1.74'
1035/19/2019 4:55 AM1.64'
1035/19/2019 3:43 AM1.53'
1035/19/2019 3:01 AM1.43'
1035/19/2019 1:31 AM1.56'
1035/19/2019 12:55 AM1.67'
1035/19/2019 12:53 AM1.68'
1035/19/2019 12:37 AM1.73'
1035/19/2019 12:27 AM1.77'
1035/19/2019 12:21 AM1.81'
1035/19/2019 12:05 AM1.88'
1035/18/2019 11:49 PM1.87'
1035/18/2019 11:33 PM1.91'
1035/18/2019 11:17 PM2.00'
1035/18/2019 11:07 PM1.97'
1035/18/2019 11:01 PM2.03'
1035/18/2019 10:45 PM2.07'
1035/18/2019 10:29 PM2.09'
1035/18/2019 10:27 PM2.09'
1035/18/2019 10:13 PM2.13'
1035/18/2019 9:57 PM2.18'
1035/18/2019 9:41 PM2.21'
1035/18/2019 9:31 PM2.21'
1035/18/2019 9:25 PM2.28'
1035/18/2019 9:09 PM2.32'
1035/18/2019 8:53 PM2.29'
1035/18/2019 8:37 PM2.33'
1035/18/2019 8:27 PM2.32'
1035/18/2019 8:21 PM2.40'
1035/18/2019 8:05 PM2.39'
1035/18/2019 7:49 PM2.42'
1035/18/2019 7:33 PM2.44'
1035/18/2019 7:17 PM2.45'
1035/18/2019 7:15 PM2.45'
1035/18/2019 7:01 PM2.50'
1035/18/2019 6:45 PM2.49'
1035/18/2019 6:29 PM2.52'
1035/18/2019 6:13 PM2.58'
1035/18/2019 5:57 PM2.59'
1035/18/2019 5:45 PM2.58'
1035/18/2019 5:41 PM2.61'
1035/18/2019 5:25 PM2.66'
1035/18/2019 5:09 PM2.60'
1035/18/2019 4:53 PM2.64'
1035/18/2019 4:37 PM2.66'
1035/18/2019 4:21 PM2.70'
1035/18/2019 4:07 PM2.68'
1035/18/2019 4:05 PM2.71'
1035/18/2019 3:49 PM2.75'
1035/18/2019 3:33 PM2.75'
1035/18/2019 3:17 PM2.79'
1035/18/2019 3:01 PM2.80'
1035/18/2019 2:51 PM2.80'
1035/18/2019 2:45 PM2.84'
1035/18/2019 2:29 PM2.86'
1035/18/2019 2:13 PM2.90'
1035/18/2019 1:57 PM2.88'
1035/18/2019 1:41 PM2.91'
1035/18/2019 1:25 PM2.94'
1035/18/2019 1:09 PM2.96'
1035/18/2019 12:53 PM2.96'
1035/18/2019 12:37 PM2.98'
1035/18/2019 12:21 PM2.95'
1035/18/2019 12:05 PM2.96'
1035/18/2019 11:49 AM2.99'
1035/18/2019 11:33 AM2.97'
1035/18/2019 11:17 AM2.95'
1035/18/2019 11:01 AM2.96'
1035/18/2019 10:45 AM2.93'
1035/18/2019 10:29 AM2.91'
1035/18/2019 10:27 AM2.91'
1035/18/2019 10:13 AM2.89'
1035/18/2019 9:57 AM2.82'
1035/18/2019 9:45 AM2.81'
1035/18/2019 8:51 AM2.69'
1035/18/2019 8:21 AM2.57'
1035/18/2019 7:45 AM2.45'
1035/18/2019 7:15 AM2.33'
1035/18/2019 7:01 AM2.26'
1035/18/2019 6:45 AM2.22'
1035/18/2019 6:15 AM2.12'
1035/18/2019 5:49 AM2.00'
1035/18/2019 5:03 AM1.90'
1035/18/2019 4:19 AM1.77'
1035/18/2019 3:01 AM1.63'
1035/18/2019 1:19 AM1.67'
1035/17/2019 11:45 PM1.79'
1035/17/2019 11:03 PM1.94'
1035/17/2019 11:01 PM1.97'
1035/17/2019 10:07 PM2.07'
1035/17/2019 8:57 PM2.20'
1035/17/2019 7:01 PM2.31'
1035/17/2019 3:01 PM2.32'
1035/17/2019 2:15 PM2.31'
1045/19/2019 1:27 PM2.47'
1045/19/2019 1:25 PM2.36'
1045/19/2019 1:13 PM2.32'
1045/19/2019 1:09 PM2.39'
1045/19/2019 1:07 PM2.46'
1045/19/2019 12:55 PM2.57'
1045/19/2019 12:53 PM2.62'
1045/19/2019 12:45 PM2.67'
1045/19/2019 12:37 PM2.60'
1045/19/2019 12:33 PM2.57'
1045/19/2019 12:21 PM2.66'
1045/19/2019 12:07 PM2.72'
1045/19/2019 12:05 PM2.65'
1045/19/2019 11:51 AM2.62'
1045/19/2019 11:49 AM2.75'
1045/19/2019 11:37 AM2.85'
1045/19/2019 11:33 AM2.84'
1045/19/2019 11:27 AM2.74'
1045/19/2019 11:19 AM2.62'
1045/19/2019 11:17 AM2.68'
1045/19/2019 11:01 AM2.76'
1045/19/2019 10:45 AM2.68'
1045/19/2019 10:31 AM2.64'
1045/19/2019 10:29 AM2.71'
1045/19/2019 10:15 AM2.78'
1045/19/2019 10:13 AM2.76'
1045/19/2019 9:57 AM2.73'
1045/19/2019 9:41 AM2.61'
1045/19/2019 9:25 AM2.63'
1045/19/2019 9:15 AM2.66'
1045/19/2019 9:09 AM2.55'
1045/19/2019 9:07 AM2.53'
1045/19/2019 8:53 AM2.39'
1045/19/2019 8:51 AM2.39'
1045/19/2019 8:39 AM2.50'
1045/19/2019 8:37 AM2.43'
1045/19/2019 8:21 AM2.43'
1045/19/2019 8:15 AM2.35'
1045/19/2019 8:09 AM2.21'
1045/19/2019 8:05 AM2.37'
1045/19/2019 8:01 AM2.38'
1045/19/2019 7:57 AM2.52'
1045/19/2019 7:49 AM2.38'
1045/19/2019 7:45 AM2.38'
1045/19/2019 7:37 AM2.27'
1045/19/2019 7:33 AM2.43'
1045/19/2019 7:31 AM2.39'
1045/19/2019 7:19 AM2.28'
1045/19/2019 7:17 AM2.25'
1045/19/2019 7:03 AM2.17'
1045/19/2019 7:01 AM2.13'
1045/19/2019 6:45 AM2.11'
1045/19/2019 6:29 AM2.05'
1045/19/2019 6:15 AM2.06'
1045/19/2019 6:13 AM2.04'
1045/19/2019 5:57 AM1.97'
1045/19/2019 5:55 AM1.94'
1045/19/2019 5:41 AM1.86'
1045/19/2019 5:33 AM1.82'
1045/19/2019 5:25 AM1.76'
1045/19/2019 5:19 AM1.70'
1045/19/2019 5:09 AM1.58'
1045/19/2019 5:03 AM1.48'
1045/19/2019 4:55 AM1.73'
1045/19/2019 4:53 AM1.69'
1045/19/2019 4:37 AM1.54'
1045/19/2019 4:25 AM1.63'
1045/19/2019 4:21 AM1.61'
1045/19/2019 4:15 AM1.53'
1045/19/2019 4:09 AM1.42'
1045/19/2019 4:07 AM1.57'
1045/19/2019 4:05 AM1.53'
1045/19/2019 3:49 AM1.51'
1045/19/2019 3:33 AM1.45'
1045/19/2019 3:17 AM1.44'
1045/19/2019 3:07 AM1.46'
1045/19/2019 3:01 AM1.37'
1045/19/2019 2:45 AM1.38'
1045/19/2019 2:29 AM1.27'
1045/19/2019 2:13 AM1.30'
1045/19/2019 2:03 AM1.32'
1045/19/2019 1:57 AM1.25'
1045/19/2019 1:55 AM1.20'
1045/19/2019 1:51 AM1.34'
1045/19/2019 1:41 AM1.17'
1045/19/2019 1:33 AM1.23'
1045/19/2019 1:27 AM1.36'
1045/19/2019 1:25 AM1.31'
1045/19/2019 1:09 AM1.27'
1045/19/2019 12:57 AM1.24'
1045/19/2019 12:53 AM1.14'
1045/19/2019 12:51 AM1.14'
1045/19/2019 12:45 AM1.03'
1045/19/2019 12:37 AM1.28'
1045/19/2019 12:27 AM1.32'
1045/19/2019 12:21 AM1.51'
1045/19/2019 12:19 AM1.49'
1045/19/2019 12:07 AM1.38'
1045/19/2019 12:05 AM1.48'
1045/19/2019 12:03 AM1.48'
1045/18/2019 11:55 PM1.58'
1045/18/2019 11:49 PM1.47'
1045/18/2019 11:43 PM1.44'
1045/18/2019 11:33 PM1.62'
1045/18/2019 11:31 PM1.57'
1045/18/2019 11:25 PM1.47'
1045/18/2019 11:17 PM1.68'
1045/18/2019 11:13 PM1.69'
1045/18/2019 11:01 PM1.55'
1045/18/2019 10:45 PM1.70'
1045/18/2019 10:29 PM1.84'
1045/18/2019 10:15 PM1.75'
1045/18/2019 10:13 PM1.91'
1045/18/2019 10:09 PM1.85'
1045/18/2019 10:01 PM1.74'
1045/18/2019 9:57 PM1.98'
1045/18/2019 9:41 PM1.96'
1045/18/2019 9:25 PM1.99'
1045/18/2019 9:19 PM1.94'
1045/18/2019 9:09 PM1.83'
1045/18/2019 9:03 PM2.06'
1045/18/2019 8:53 PM1.95'
1045/18/2019 8:49 PM1.94'
1045/18/2019 8:37 PM1.81'
1045/18/2019 8:33 PM1.83'
1045/18/2019 8:27 PM1.95'
1045/18/2019 8:21 PM2.13'
1045/18/2019 8:05 PM2.28'
1045/18/2019 7:49 PM2.25'
1045/18/2019 7:33 PM2.25'
1045/18/2019 7:21 PM2.25'
1045/18/2019 7:17 PM2.33'
1045/18/2019 7:01 PM2.41'
1045/18/2019 6:45 PM2.36'
1045/18/2019 6:29 PM2.39'
1045/18/2019 6:13 PM2.41'
1045/18/2019 5:57 PM2.38'
1045/18/2019 5:55 PM2.39'
1045/18/2019 5:43 PM2.29'
1045/18/2019 5:41 PM2.43'
1045/18/2019 5:33 PM2.44'
1045/18/2019 5:25 PM2.41'
1045/18/2019 5:13 PM2.33'
1045/18/2019 5:09 PM2.35'
1045/18/2019 4:53 PM2.41'
1045/18/2019 4:37 PM2.44'
1045/18/2019 4:31 PM2.58'
1045/18/2019 4:21 PM2.55'
1045/18/2019 4:09 PM2.47'
1045/18/2019 4:05 PM2.43'
1045/18/2019 3:57 PM2.36'
1045/18/2019 3:49 PM2.56'
1045/18/2019 3:33 PM2.46'
1045/18/2019 3:25 PM2.51'
1045/18/2019 3:17 PM2.66'
1045/18/2019 3:01 PM2.61'
1045/18/2019 2:45 PM2.54'
1045/18/2019 2:29 PM2.57'
1045/18/2019 2:13 PM2.69'
1045/18/2019 2:07 PM2.63'
1045/18/2019 1:57 PM2.57'
1045/18/2019 1:55 PM2.50'
1045/18/2019 1:41 PM2.67'
1045/18/2019 1:25 PM2.72'
1045/18/2019 1:09 PM2.74'
1045/18/2019 12:53 PM2.75'
1045/18/2019 12:43 PM2.74'
1045/18/2019 12:37 PM2.83'
1045/18/2019 12:21 PM2.81'
1045/18/2019 12:19 PM2.85'
1045/18/2019 12:05 PM2.71'
1045/18/2019 11:55 AM2.70'
1045/18/2019 11:49 AM2.92'
1045/18/2019 11:33 AM2.97'
1045/18/2019 11:21 AM2.97'
1045/18/2019 11:17 AM2.93'
1045/18/2019 11:01 AM2.89'
1045/18/2019 10:45 AM2.90'
1045/18/2019 10:29 AM2.85'
1045/18/2019 10:21 AM2.86'
1045/18/2019 10:13 AM2.83'
1045/18/2019 9:57 AM2.77'
1045/18/2019 9:45 AM2.74'
1045/18/2019 9:41 AM2.66'
1045/18/2019 9:33 AM2.62'
1045/18/2019 9:25 AM2.88'
1045/18/2019 9:13 AM2.86'
1045/18/2019 9:09 AM2.85'
1045/18/2019 8:53 AM2.77'
1045/18/2019 8:49 AM2.75'
1045/18/2019 8:39 AM2.59'
1045/18/2019 8:37 AM2.55'
1045/18/2019 8:25 AM2.45'
1045/18/2019 8:21 AM2.41'
1045/18/2019 8:15 AM2.35'
1045/18/2019 8:13 AM2.51'
1045/18/2019 8:07 AM2.62'
1045/18/2019 8:05 AM2.79'
1045/18/2019 8:01 AM2.75'
1045/18/2019 7:49 AM2.71'
1045/18/2019 7:33 AM2.63'
1045/18/2019 7:19 AM2.63'
1045/18/2019 7:17 AM2.62'
1045/18/2019 7:01 AM2.56'
1045/18/2019 6:55 AM2.53'
1045/18/2019 6:45 AM2.48'
1045/18/2019 6:31 AM2.42'
1045/18/2019 6:29 AM2.40'
1045/18/2019 6:13 AM2.34'
1045/18/2019 6:09 AM2.32'
1045/18/2019 5:57 AM2.22'
1045/18/2019 5:55 AM2.21'
1045/18/2019 5:41 AM2.08'
1045/18/2019 5:27 AM2.09'
1045/18/2019 5:25 AM2.06'
1045/18/2019 5:15 AM1.96'
1045/18/2019 5:09 AM1.91'
1045/18/2019 4:57 AM1.86'
1045/18/2019 4:53 AM1.75'
1045/18/2019 4:51 AM1.75'
1045/18/2019 4:37 AM1.80'
1045/18/2019 4:21 AM1.79'
1045/18/2019 4:15 AM1.85'
1045/18/2019 4:05 AM1.76'
1045/18/2019 4:01 AM1.74'
1045/18/2019 3:49 AM1.63'
1045/18/2019 3:45 AM1.63'
1045/18/2019 3:39 AM1.75'
1045/18/2019 3:33 AM1.65'
1045/18/2019 3:31 AM1.62'
1045/18/2019 3:19 AM1.51'
1045/18/2019 3:17 AM1.40'
1045/18/2019 3:15 AM1.40'
1045/18/2019 3:01 AM1.51'
1045/18/2019 2:55 AM1.50'
1045/18/2019 2:45 AM1.59'
1045/18/2019 2:43 AM1.60'
1045/18/2019 2:29 AM1.54'
1045/18/2019 2:19 AM1.46'
1045/18/2019 2:13 AM1.36'
1045/18/2019 2:09 AM1.34'
1045/18/2019 1:57 AM1.46'
1045/18/2019 1:41 AM1.53'
1045/18/2019 1:25 AM1.48'
1045/18/2019 1:09 AM1.37'
1045/18/2019 12:53 AM1.62'
1045/18/2019 12:45 AM1.58'
1045/18/2019 12:37 AM1.44'
1045/18/2019 12:31 AM1.61'
1045/18/2019 12:21 AM1.49'
1045/18/2019 12:05 AM1.52'
1045/18/2019 12:01 AM1.49'
1045/17/2019 11:51 PM1.37'
1045/17/2019 11:49 PM1.29'
1045/17/2019 11:45 PM1.25'
1045/17/2019 11:43 PM1.14'
1045/17/2019 11:39 PM1.41'
1045/17/2019 11:33 PM1.74'
1045/17/2019 11:17 PM1.72'
1045/17/2019 11:09 PM1.65'
1045/17/2019 11:01 PM1.54'
1045/17/2019 10:45 PM1.80'
1045/17/2019 10:29 PM1.80'
1045/17/2019 10:25 PM1.76'
1045/17/2019 10:15 PM1.62'
1045/17/2019 10:13 PM1.84'
1045/17/2019 10:01 PM1.79'
1045/17/2019 9:57 PM1.95'
1045/17/2019 9:41 PM2.01'
1045/17/2019 9:39 PM2.01'
1045/17/2019 9:27 PM1.91'
1045/17/2019 9:25 PM2.08'
1045/17/2019 9:09 PM2.03'
1045/17/2019 8:53 PM2.07'
1045/17/2019 8:45 PM2.01'
1045/17/2019 8:37 PM2.10'
1045/17/2019 8:27 PM2.12'
1045/17/2019 8:21 PM2.07'
1045/17/2019 8:07 PM2.01'
1045/17/2019 8:05 PM2.11'
1045/17/2019 7:57 PM2.19'
1045/17/2019 7:49 PM2.11'
1045/17/2019 7:39 PM2.09'
1045/17/2019 7:33 PM2.20'
1045/17/2019 7:31 PM2.19'
1045/17/2019 7:17 PM2.13'
1045/17/2019 7:01 PM2.13'
1045/17/2019 6:55 PM2.09'
1045/17/2019 6:45 PM2.23'
1045/17/2019 6:29 PM2.24'
1045/17/2019 6:13 PM2.27'
1045/17/2019 5:57 PM2.23'
1045/17/2019 5:49 PM2.25'
1045/17/2019 5:41 PM2.18'
1045/17/2019 5:25 PM2.04'
1045/17/2019 5:21 PM2.13'
1045/17/2019 5:15 PM2.03'
1045/17/2019 5:13 PM2.16'
1045/17/2019 5:09 PM2.10'
1045/17/2019 4:57 PM2.03'
1045/17/2019 4:53 PM1.98'
1045/17/2019 4:49 PM1.91'
1045/17/2019 4:37 PM2.27'
1045/17/2019 4:31 PM2.20'
1045/17/2019 4:21 PM2.15'
1045/17/2019 4:05 PM2.10'
1045/17/2019 4:03 PM2.10'
1045/17/2019 3:49 PM2.16'
1045/17/2019 3:39 PM2.25'
1045/17/2019 3:33 PM2.21'
1045/17/2019 3:19 PM2.13'
1045/17/2019 3:17 PM2.08'
1045/17/2019 3:07 PM2.01'
1045/17/2019 3:01 PM2.20'
1045/17/2019 2:45 PM2.17'
1045/17/2019 2:39 PM2.12'
1045/17/2019 2:29 PM2.06'
1045/17/2019 2:13 PM2.01'
1045/17/2019 2:09 PM2.00'
1045/17/2019 1:57 PM2.23'
1045/17/2019 1:43 PM2.23'
1045/17/2019 1:41 PM2.15'
Flood Frequency
Elevation
10% (10-year)5.80'
2% (50-year)9.90'
1% (100-year)11.60'
.2% (500-year)15.00'
Historical Storm
Date
Event
Elevation
9/16/2007Erin3.00'
9/16/2008Ike11.40'
4/18/2009 3.80'
8/27/2017Harvey6.00'
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.