Use of GIS to Identify and Delineate Areas of Fluoride, Sulfate, Chloride, and Nitrate Levels in the Woodbine Aquifer, North Central Texas, in the 1950s, 1960s, 1970s, 1980s, and 1990s Page: 85
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3-D Map of Chloride Concentration
Difference between Decades
MEN"IChloride Difference
(Mg/L)
-1500- -1001
-1000- -501
I-500-0
0 -500
I 501 - 1000
S1000- 1500
1500-2000
2000 - 2500
-2500 - 3000
-No DataLayer 1 = Nine Counties
Layer 2 = 1960s - 1950s
Layer 3 = 1970s - 1960s
Layer 4 = 1980s - 1970s
Layer 5 = 1990s - 1980s
Z- Factor= 5Figure 41 Different Chloride Concentrations between Consecutive Decades
85
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Sanmanee, Sirichai. Use of GIS to Identify and Delineate Areas of Fluoride, Sulfate, Chloride, and Nitrate Levels in the Woodbine Aquifer, North Central Texas, in the 1950s, 1960s, 1970s, 1980s, and 1990s, thesis, August 2001; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc2869/m1/94/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .