Figure 2. Houston area map showing active surface faults interpreted on lidar imagery and the locations of salt domes. Only known faults interpreted on the lidar are shown here. Houston is in Harris County, and most of Harris County is visible. Note that the faults in northwest Houston have a NE-SW trend, whereas some faults in southeast Houston radiate from salt domes. Salt domes are taken from O'Neill and Van Siclen (1984). Major fault systems of northwest Houston are shown: Hockley-Conroe Fault System; Addicks Fault System; Long Point-Eureka Heights Fault System. Locations discussed in the text are labeled: IAH—Bush Intercontinental Airport; B—Brownwood subdivision; AR—Addicks Reservoir; BR—Barker Reservoir. The locations of Figures 3, 4, and 12 are also shown.