H-GAC 13-County Flood Prone Areas
Infrastructure Inside 100 Year Floodplain
Population Inside 100 Year Floodplain (2005)
Population Inside 100 Year Floodplain (2035)
Infrastructure Impacted by 25 Feet Sea Level Rise (2005)
Population Impacted by 25 Feet Sea Level Rise (2005)
Population Impacted by 25 Feet Sea Level Rise (2035)
Sea Level Rise Animation (1–35 feet)
Hurricane Ike High Water Measurements
Hurricane Ike Track and Landfall
Hurricane Ike SLOSH Model (normal speed)
Hurricane Ike SLOSH Model (slow speed, non looping)

Hurricane Ike MEOW Surge Levels
Hurricane Ike Analysis Zone (GTE 10 ft)
Wastewater Treatment Plants Impacted (GTE 10 ft)
Hospitals Impacted (GTE 10 ft)
K-12 Schools Impacted (GTE 10 ft)

Universities Impacted (GTE 10 ft)
Power Sub-Stations Impacted (GTE 10 ft)
Land Use Impacted (GTE 10 ft)
Households Impacted (GTE 10 ft)
Businesses Impacted (GTE 10 ft)
Hurricane Ike Imagery Analysis
Hurricane Ike Evacuation Areas

These products are for informational purposes and may not have been prepared for or be suitable for legal, engineering, or surveying purposes. They do not represent an on-the-ground survey and represents only the approximate relative location of property boundaries. Mapping may not reflect on the ground conditions. The Houston-Galveston Area Council makes no further claims as to the accuracy or reliability of the data, and neither assumes, nor will accept liability for their use. All maps within this Map Book are the copyright of H-GAC and should not be sold, reproduced, or published without the written consent of H-GAC.

Map Name: H-GAC 13-County Flood Prone Areas   H-GAC 13-County Flood Prone Areas
Map Description: Shows floodplains and Category 1-5 hurricane surge zones for the H-GAC 13-county region  
Date Updated: October 8, 2012  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Data_Development\Maps\Flood_Prone_Areas\
HGAC_13_County_Flood_Prone_Areas.mxd
 
Notes/Comments: 100 year floodplain, NOAA National Hurricane Center SLOSH MOM model results (High Tide) for Galveston (February 2012) and Matagorda Bay (Mach 2008) Basins, and Evacuation Zones  
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Map Name: Infrastructure inside 100 Year Floodplain   Infrastructure Inside 100 Year Floodplain
Map Description: Shows critical infrastructure that is located inside 100 year floodplain areas  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\
Floodplain\Maps\Points_of_Interest_FP.mxd
 
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects project  
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Map Name: Population Inside 100 Year Floodplain (2005)   Population Inside 100 Year Floodplain (2005)
Map Description:
Date Updated:
Shows population per square mile (2005) and the 100 year floodplain
September 2008
 
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\
Floodplain\Maps\Population_2005_FP.mxd
 
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects  
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Map Name: Population Inside 100 Year Floodplain (2035)   Population Inside 100 Year Floodplain (2035)
Map Description:
Date Updated:
Shows population per square mile (2035) and the 100 year floodplain
September 2008
 
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\
Floodplain\Maps\Population_2035_FP.mxd
 
Notes/Comments:

Produced as part of the Foresight Panel on Environmental Effects project.

 
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Map Name: Infrastructure Impacted by 25 Feet Sea Level Rise (2005)   Infrastructure Impacted by 25 Feet Sea Level Rise (2005)
Map Description:
Shows infrastructure (2005) impacted by 25 feet of sea level rise, assuming current elevations.  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\ Floodplain\Maps\Points_Of_Interest_SLR.mxd  
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects Project.  
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Map Name: Population Impacted by 25 Feet Sea Level Rise (2005)   Population Impacted by 25 Feet Sea Level Rise (2005)
Map Description:
Date Updated:
Shows population per square mile (2005) impacted by 25 feet of sea level rise, assuming current elevations.  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\ Floodplain\Maps\Population_2005_SLR.mxd  
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects Project.  
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Map Name: Population Impacted by 25 Feet Sea Level Rise (2035)   Population Impacted by 25 Feet Sea Level Rise (2035)
Map Description: Shows population per square mile (2035 forecast) impacted by 25 feet of sea level rise, assuming current elevations  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\Climate_Change\
Floodplain\Maps\Population_2035_SLR.mxd
 
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects Project.  
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Map Name: Sea Level Rise Animation (1 - 35 Feet)   Sea Level Rise Animation
Map Description: Animated illustration of a 1 to 35 foot sea level rise, and the area potentially inundated.  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: Not available  
Notes/Comments: Produced as part of the Foresight Panel on Environmental Effects Project.  
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AVI 135M
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Map Name: Hurricane Ike High Water Measurements  
Map Description: High water measurements (feet above sea level) as collected by the National Weather Service  
Date Updated: March 2009  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Data_Development\Maps\Ike\
High_Water_Measurements.mxd
 
Notes/Comments: Elevations based on NAVD88 Datum. This data was collected and released by the National Weather Service.  
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Map Name: Hurricane Ike Track and Landfall   Hurricane Ike Track and Landfall
Map Description:
Date Updated:
Shows overall track of hurricane Ike and landfall area.
March 2009
 
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\IKE\Maps\Track\
Hurricane_Ike_Overview.mxd
 
Notes/Comments: None  
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Map Name: Hurricane Ike SLOSH Model
(normal speed)
 
Map Description: NOAA NHC SLOSH model of estimated
surge levels (prior to landfall).
Plays at normal speed with looping.
NOAA = National Oceanic and
Atmospheric Administration;
NHC = National Hurricane Center;
SLOSH= Sea, Lake and Overland Surges
from Hurricanes
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: Not available  
Notes/Comments: Ends with Maximum Envelope of Water (MEOW)  
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Map Name: Hurricane Ike SLOSH Model
(slow, no loop)
 
Map Description:
NOAA NHC SLOSH model of estimated
surge levels (prior to landfall).
Plays at half-speed from original, and without looping.
NOAA = National Oceanic and Atmospheric Administration;
NHC = National Hurricane Center;
SLOSH= Sea, Lake and Overland Surges from Hurricanes
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: Not available  
Notes/Comments: Hurricane Ike Impact Area
Ends with Maximum Envelope of Water (MEOW)
 
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GIF17M
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Map Name: Hurricane Ike MEOW Surge Levels   Hurricane Ike MEOW Surge Level
Map Description: Shows MEOW from SLOSH model.
SLOSH= Sea, Lake and Overland Surges
from Hurricanes
; MEOW= Maximum
Envelope of Water
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Hurricane Ike Analysis Zone (GTE 10 Feet)   Hurricane Ike Analysis Zone
Map Description:
Shows extent of area that was expected to experience 10 feet of storm surge. Used as a basis for further analysis. GTE=greater than or equal  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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PDF 837K  JPG 935K  PNG 329K
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Map Name: Wastewater Treatment Plants Impacted
(GTE 10 Feet)
  Wastewater Treatment Plants Impacted
Map Description: Shows locations of wastewater treatment plants that were within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Hospitals Impacted (GTE 10 Feet)   Hospitals Impacted
Map Description: Shows locations of hospitals that were within area expected to experience 10 feet of storm surge. GTE=greater than or equal  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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PDF 2M  JPG 936K  PNG 330K
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Map Name: K-12 Schools Impacted (GTE 10 Feet)   K-12 Schools Impacted
Map Description: Shows locations of K-12 schools that were within area expected to experience 10 feet of storm surge. GTE=greater than or equal  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Universities Impacted (GTE 10 Feet)   Universities Impacted
Map Description: Shows locations of universities that were within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Power Sub-Stations  Impacted (GTE 10 Feet)   Power Sub-Stations Impacted
Map Description: Shows locations of power sub-stations that were
within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\IKE\
Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Land Use Impacted (GTE 10 Feet)   Land Use Impacted
Map Description:
Shows land use for areas that were within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Households Impacted (GTE 10 Feet)   Households Impacted
Map Description: Shows household locations for areas that were within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Businesses Impacted (GTE 10 Feet)   Businesses Impacted
Map Description:
Shows business locations for areas that were within area expected to experience 10 feet of storm surge.
GTE=greater than or equal
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\IKE\
Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments: None  
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Map Name: Hurricane Ike Imagery Analysis   Hurricane Ike Imagery Analysis
Map Description: Shows areas that have been reviewed using post-Ike imagery and pre-Ike imagery. Classified into:
- Not Assessed (transparent)
- Change (purple)
- No Change (green)
 
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments:

Hurricane Ike Impact Area
None

 
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Map Name: Hurricane Ike Evacuation Areas   Hurricane Ike Evacuation Areas
Map Description: Shows areas that were evacuated prior to Hurricane Ike landfall.  
Date Updated: September 2008  
Contact:
Contact Phone:
Contact e-mail:
Community & Environmental Planning
(713) 627-3200
CEGIS@h-gac.com
 
MXD: V:\Forecast_Group\Projects\
IKE\Maps\Analysis\
Impacts_V1.mxd
 
Notes/Comments:

Hurricane Ike Impact Area, Coastal region
None

 
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PDF 3M  JPG 838K   PNG 304K
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