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Stream Elevation Sensor 1843
1840 Gum Gully @ Diamond Head Boulevard
Sensor ID 1843
Sensor Type Radar
Installed 4/1/1986
Flooding Likely 25.10'
Flooding Possible 22.10'
Bottom of Stream 5.00'
Tip of Orifice 38.02'
Benchmark 35.00'
RM 170035 stamped R102 BM01 located on the downstream sidewalk at stream centerline, 1988 NAVD, 2001 adjustment. 78 to 01 Adjustment -0.2'
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 1843 is 8.51'
Reading on 6/15/2025 1:31 PM
Export to Excel
2 Days
Sensor
Reading Date
Elevation
18436/15/2025 1:31 PM8.51'
18436/15/2025 12:13 PM8.62'
18436/15/2025 11:57 AM8.65'
18436/15/2025 11:03 AM8.73'
18436/15/2025 10:09 AM8.83'
18436/15/2025 9:15 AM8.94'
18436/15/2025 8:27 AM9.04'
18436/15/2025 7:57 AM9.11'
18436/15/2025 7:39 AM9.15'
18436/15/2025 6:57 AM9.25'
18436/15/2025 6:07 AM9.36'
18436/15/2025 5:27 AM9.46'
18436/15/2025 4:43 AM9.57'
18436/15/2025 4:01 AM9.67'
18436/15/2025 3:57 AM9.68'
18436/15/2025 3:11 AM9.78'
18436/15/2025 2:25 AM9.88'
18436/15/2025 1:41 AM9.99'
18436/15/2025 12:59 AM10.09'
18436/15/2025 12:17 AM10.20'
18436/14/2025 11:57 PM10.26'
18436/14/2025 11:39 PM10.30'
18436/14/2025 10:57 PM10.41'
18436/14/2025 10:23 PM10.51'
18436/14/2025 9:47 PM10.62'
18436/14/2025 9:09 PM10.73'
18436/14/2025 8:35 PM10.84'
18436/14/2025 7:57 PM10.95'
18436/14/2025 7:27 PM11.05'
18436/14/2025 6:53 PM11.16'
18436/14/2025 6:25 PM11.26'
18436/14/2025 5:49 PM11.37'
18436/14/2025 5:17 PM11.48'
18436/14/2025 4:47 PM11.58'
18436/14/2025 4:09 PM11.69'
18436/14/2025 3:57 PM11.73'
18436/14/2025 3:37 PM11.79'
18436/14/2025 3:01 PM11.90'
18436/14/2025 2:25 PM12.00'
18436/14/2025 1:43 PM12.11'
18436/14/2025 1:01 PM12.21'
18436/14/2025 12:15 PM12.32'
18436/14/2025 11:57 AM12.36'
18436/14/2025 11:33 AM12.42'
18436/14/2025 10:45 AM12.53'
18436/14/2025 10:05 AM12.63'
18436/14/2025 9:25 AM12.74'
18436/14/2025 8:43 AM12.84'
18436/14/2025 8:05 AM12.95'
18436/14/2025 7:57 AM12.98'
18436/14/2025 7:29 AM13.05'
18436/14/2025 6:49 AM13.16'
18436/14/2025 6:15 AM13.26'
18436/14/2025 5:39 AM13.37'
18436/14/2025 5:07 AM13.48'
18436/14/2025 4:37 AM13.58'
18436/14/2025 4:03 AM13.69'
18436/14/2025 3:57 AM13.71'
18436/14/2025 3:33 AM13.79'
18436/14/2025 3:03 AM13.90'
18436/14/2025 2:37 AM14.00'
18436/14/2025 2:07 AM14.11'
18436/14/2025 1:37 AM14.23'
18436/14/2025 1:13 AM14.34'
18436/14/2025 12:47 AM14.45'
18436/14/2025 12:21 AM14.57'
18436/13/2025 11:59 PM14.67'
18436/13/2025 11:57 PM14.68'
18436/13/2025 11:35 PM14.78'
18436/13/2025 11:13 PM14.88'
18436/13/2025 10:49 PM14.99'
18436/13/2025 10:25 PM15.09'
18436/13/2025 10:01 PM15.20'
18436/13/2025 9:39 PM15.30'
18436/13/2025 9:13 PM15.41'
18436/13/2025 8:47 PM15.51'
18436/13/2025 8:21 PM15.62'
18436/13/2025 7:57 PM15.71'
18436/13/2025 7:51 PM15.73'
18436/13/2025 7:21 PM15.83'
18436/13/2025 6:39 PM15.93'
18436/13/2025 5:59 PM16.04'
18436/13/2025 3:57 PM16.20'
18436/13/2025 3:31 PM16.15'
18436/13/2025 3:09 PM16.04'
18436/13/2025 2:55 PM15.93'
18436/13/2025 2:43 PM15.80'
18436/13/2025 2:35 PM15.68'
18436/13/2025 2:29 PM15.58'
Flood Frequency
Elevation
10% (10-year)23.60'
2% (50-year)25.10'
1% (100-year)25.80'
.2% (500-year)27.60'
Historical Storm
Date
Event
Elevation
3/4/1992 26.10'
10/18/1994 29.90'
10/31/2015 25.50'
4/18/2016 16.90'
5/27/2016 22.30'
8/27/2017Harvey34.00'
9/19/2019Imelda27.10'
5/2/2024 22.50'
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.