Res 2018-025/adopting the 2018 Hays County, Texas Hazard Mitigation Plan as the official plan of the City; authorizing the inclusion of the City of San Marcos Hazard Mitigation Plan as an appendix; designating the City Manager as the official authorized

Home Browse Search

Expansive Soils Expansive Soils: Description According to the 2013 State of Texas Hazard Mitigation Plan Update, expansive soils are defined as soils and soft rock that tend to swell or shrink due to changes in moisture content. Expansive Soils: Extent Scale Figure 2.3 illustrates the location of the United States Geological Survey (USGS) Expansive Soils Regions for Hays County. This dataset can be used to determine the extent of an area’s underlying soil’s swelling potential. Areas underlain with soils with high swelling potential are at more risk. Risk Assessment (USGS, 2017) ! Jurisdiction-specific data for location, previous occurrences, extent, probability, impact, and vulnerability are found in jurisdiction annexes. 53