Report 186 by E.T. Baker, Jr., C.R. Follett, G.D. McAdoo, and C.W. Bonnet, U.S. Geological Survey | September 1974

  • Report 186 - Ground-Water Resources of Grimes County, Texas (pdf - 5.14MB)
  • Figure 2 (pdf - 2.66MB) - Geologic Map
  • Figure 3 (pdf - 2.58MB) - Section Showing Correlation of Geologic Units and Quality of Water Along Line A-A'
  • Figure 4 (pdf - 2.24MB) - Approximate Altitude of the Top of the Sparta Sand
  • Figure 6 (pdf - 2.48MB) - Approximate Altitude of the Top of the Yegua Formation
  • Figure 8 (pdf - 2.68MB) - Approximate Altitude of the Top of the Jackson Group
  • Figure 10 (pdf - 2.33MB) - Approximate Altitude of the Top of the Catahoula Sandstone
  • Figure 13 (pdf - 2.14MB) - Approximate Altitude of Water Levels in Wells in the Yegua and Fleming Formations, 1970-71
  • Figure 18 (pdf - 4.58MB) - Depths of Wells Tapping Various Aquifers, and Iron Content and Specific Conductance of Water from Wells
  • Figure 20 (pdf - 2.20MB) - Approximate Thickness of Sand Containing Fresh to Slightly Saline Water in the Sparta Sand
  • Figure 21 (pdf - 2.34MB) - Approximate Thickness of Sand Containing Fresh to Slightly Saline Water in the Yegua Formation
  • Figure 22 (pdf - 2.71MB) - Approximate Thickness of Sand Containing Fresh to Slightly Saline Water in the Jackson Group
  • Figure 23 (pdf - 2.56MB) - Approximate Thickness of Sand Containing Fresh to Slightly Saline Water in the Catahoula Sandstone
  • Figure 24 (pdf - 4.83MB) - Approximate Thickness of Sand Containing Fresh to Slightly Saline Water in the Fleming Formation
  • Figure 26 (pdf - 4.92MB) - Locations of Wells and Springs
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