Subsidence Mapping in Harris County, Texas

Subsidence Mapping in Harris County, Texas

Taryn TiggesCE 394K GIS in Water ResourcesFall 2012

Project Background

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Compaction4Methods: Water Level Mapping5Data SourcesWater LevelsBase Maps6Model

7Code Well Type MMineO Observation POil or GasRRechargeS Spring T Test hole W Withdrawal

Well Types8Frequency of Water Level Meaurements

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11Water Levels in Harris County 1980 - 2011

12Methods: Clay Compaction Mapping13Data SourcesClay Compaction Measurements14

Frequency of Clay Compaction Meaurements15

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19SummaryWater management has helped Houston increase groundwater levels since 1973Subsidence has increased in Harris County since 1973More monitoring points exist for water level measurements than for clay compaction measurementsGroundwater levels and subsidence are related20