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Harris‐Galveston Subsidence District
www.hgsubsidence.org
2016 Groundwater Report
George Bush Intercontinental Airport
William P. Hobby Airport
Galveston
HGSD Exhibit 1
HGSD Exhibit 2 National Oceanic and Atmospheric Administration
HGSD Exhibit 3 National Oceanic and Atmospheric Administration
HGSD Exhibit 4 National Oceanic and Atmospheric Administration
HGSD Exhibit 5
HGSD Exhibit 6
HGSD Exhibit 7
HGSD Exhibit 8
HGSD Exhibit 9
HGSD Exhibit 10
HGSD Exhibit 11
HGSD Exhibit 17
HGSD Exhibit 18 Feet per decade
HGSD Exhibit 19 Feet per decade
HGSD PAM 29 Vertical GPS Data 2007‐2016
Pam 29 is operated by the HGSD and is located near the City of Katy
‐0.6
‐0.5
‐0.4
‐0.3
‐0.2
‐0.1
0
0.1
2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017
Vertical (ft)
Decimal‐Year
Vertical land surface deformation at PA29, 2007‐2016
Fit line
HGSD Exhibit 20
HGSD PAM 17 Vertical GPS Data 2011‐2016
Pam 17 is operated by the HGSD and is located near the City of Tomball
‐1.05
‐1
‐0.95
‐0.9
‐0.85
‐0.8
‐0.75
‐0.7
‐0.65
‐0.6
‐0.55
2011 2012 2013 2014 2015 2016 2017
Vertical (ft)
Decimal‐Year
Vertical land surface deformation at PA17, 2011‐2016
Fit line
HGSD Exhibit 21
HGSD PAM 08 Vertical GPS Data 1999‐2016
Pam 08 is operated by the HGSD and is located north of the City of Houston near Woodgate.
‐1.5
‐1.25
‐1
‐0.75
‐0.5
‐0.25
0
0.25
1999 2001 2003 2005 2007 2009 2011 2013 2015 2017
Vertical (ft)
Decimal‐Year
Vertical land surface deformation at PA08, 1999‐2016
Fit line
HGSD Exhibit 22
HGSD PAM 47 Vertical GPS Data 2007‐2016
Pam 47 is operated by the HGSD and is located near the City of Spring
Decimal-Year
HGSD Exhibit 23
Addicks Extensometer
HGSD Exhibit 24
Southwest Houston Extensometer
HGSD Exhibit 28
Northeast Houston Extensometer
HGSD Exhibit 25
Pasadena Extensometer
HGSD Exhibit 26
East End Extensometer
HGSD Exhibit 27
Lake Houston Extensometer
HGSD Exhibit 29
Baytown Shallow Extensometer
HGSD Exhibit 30
Baytown Deep Extensometer
HGSD Exhibit 31
Seabrook Extensometer
HGSD Exhibit 32
NASA Extensometer
HGSD Exhibit 33
Clear Lake Shallow Extensometer
HGSD Exhibit 34
Clear Lake Deep Extensometer
HGSD Exhibit 35
Texas City Extensometer
HGSD Exhibit 36
Harris‐Galveston Subsidence District
www.hgsubsidence.org
2016 Groundwater Report