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Cumulative Compaction of Subsurface Sediments (2016) in 13 Extensometers Completed in the Chicot and Evangeline Aquifers in the Houston-Galveston Region, Texas


Publication Date
Time Period


Ramage, J.K., 2017, Cumulative compaction of subsurface sediments (2016) in 13 extensometers completed in the Chicot and Evangeline Aquifers in the Houston-Galveston Region, Texas: U.S. Geological Survey data release,


Please note: a more recent version of this dataset is available. Users are strongly advised to access the newer version of the dataset at The U.S. Geological Survey in cooperation with the Harris‐Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, and Lone Star Groundwater Conservation District has produced this dataset of compaction values in the Chicot and Evangeline aquifers in the Houston‐Galveston region, Texas. This dataset shows compaction values of subsurface sediments (mostly in the fine-grained silt and clay layers because little compaction occurs in sand layers) in the Chicot and Evangeline aquifers that were recorded continuously by using analog technology at [...]


Attached Files

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“Extensometer sites”
1.37 KB
“Addicks extensometer”
9.01 KB
“Texas City extensometer”
9.3 KB
“Southwest extensometer”
7.75 KB
“Seabrook extensometer”
9.43 KB
“Pasadena extensometer”
8.86 KB
“Northeast extensometer”
7.72 KB
“Lake Houston extensometer”
7.69 KB
“Johnson Space Center extsnometer”
9.27 KB
“East End extensometer”
9.33 KB
“Clear Lake Shallow extensometer”
8.58 KB
“Clear Lake Deep extensometer”
8.61 KB
“Baytown Shallow extensometer”
10.09 KB
“Baytown Deep extensometer”
10.4 KB
Original FGDC Metadata

18.56 KB


Most of the land-surface subsidence in the Houston-Galveston region, Texas, occurs as a direct result of groundwater withdrawals for municipal supply, commercial and industrial use, and irrigation that depressured and dewatered the Chicot, Evangeline, and Jasper aquifers, thereby causing compaction of the aquifer sediments, mostly in the fine-grained silt and clay layers. This dataset was created by the U.S. Geological Survey to provide resource managers, public officials, researchers, and the general public with ready access to accurate, impartial, scientific information regarding groundwater‐level changes and altitudes in Harris, Galveston, Fort Bend, Montgomery, Brazoria, Chambers, Grimes, Liberty, San Jacinto, Walker, and Waller Counties, Texas


Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner whenever applicable. The data have been approved for release and publication by the U.S. Geological Survey (USGS). Although the data have been subjected to rigorous review and are substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, the data are released on the condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from authorized or unauthorized use. Although the data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Users of this data are advised to read all metadata and associated documentation thoroughly to understand appropriate use and data limitations.

Additional Information


Type Scheme Key
DOI doi:10.5066/F7PC30KC

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