Revision History for SIM 3097 Mark C. Kasmarek, Robert K. Gabrysch, and Michaela R. Johnson Estimated Land-Surface Subsidence in Harris County, Texas, 1915–17 to 2001 ----------------------------------------------------- Version 1.0: Posted On-line December 31, 2009 ----------------------------------------------------- Version 1.1: Posted On-line February 08, 2010 Sheet 1 Section "Subsidence Map Compared with Contours of Measured Subsidence, 1906-2000," added to end of second sentence, "(fig. 6 inset area)". Section "Summary," sixth paragraph - Third sentence, replaced map shows subsidence with "map shows estimated subsidence." Fourth sentence, replaced mapped subsidence with "estimated mapped subsidence." Fifth sentence, replaced historical subsidence with "estimated historical subsidence." Figure 5, title, replaced elevations with "altitudes".