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Subsidence Mapping in Harris County, Texas

Subsidence Mapping in Harris County, Texas. Taryn Tigges CE 394K – GIS in Water Resources Fall 2012. Project Background. Compaction. Methods: Water Level Mapping. Data Sources. Water Levels. Base Maps. Model. Well Types. Frequency of Water Level Meaurements.

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Subsidence Mapping in Harris County, Texas

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  1. Subsidence Mapping in Harris County, Texas TarynTigges CE 394K – GIS in Water Resources Fall 2012

  2. Project Background

  3. Compaction

  4. Methods: Water Level Mapping

  5. Data Sources Water Levels Base Maps

  6. Model

  7. Well Types

  8. Frequency of Water Level Meaurements

  9. Water Levels in Harris County 1980 - 2011

  10. Methods: Clay Compaction Mapping

  11. Data Sources Clay Compaction Measurements

  12. Frequency of Clay Compaction Meaurements

  13. Summary • Water management has helped Houston increase groundwater levels since 1973 • Subsidence has increased in Harris County since 1973 • More monitoring points exist for water level measurements than for clay compaction measurements • Groundwater levels and subsidence are related

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