(GP/GT) for Additional Water Supply in the Lower Rio Grande

TABLE 5
TEXAS WATER DEVELOPMENT BOARD
GROUND WATER DATA SYSTEM
GROUND WATER QUALITY SAMPLES
MAX PH
MIN PH
PH
8.4 MEAN
6.8 SrD DmmON
MAX READING
MIN READING
GROUP 1
SILICA CALCIUM MAGNESIUM SODIUM POTASSIUM CARBONATE BICARB SULFATE CHLORIDE FLOURIDE NITRATE DISSOLVED HARDNE!
ISi021 ICal IMql INal IKI IC031 IHC031 ISO() lell IFI INO!,I SOLIDS as C.C[
"GIL MG/L MG/L MG/L MG/L rG/L MGIL MG/L MG/L MG/L "GIL MGIL MGIL
34.9 104.5 46.4 m.4 1.8 0.2 466.1 531.1 487.7 1.2 ' <
i.." 1972.8 448.
6.56 83.02 28.99 301. 99 5.03 1.00 114.56 304.14 415.76 0.59 5.6.3 1024.34 321. t
52.0 456.0 146.0 1390.0 28.0 8.0 961. 0 1630.0 1855.0 3.5 42.9 4967.0 1691.
21. 00 13.00 9.00 107.00 (1.00 0.00 143.00 105.00 88.00 0.00 0.00 706.00 O. (
GROUP 2
7.9 IONLY 1 LISTING) 31 140 56 606 0 359 457 773 1.3 3.9 2245 5f
MAX PH
MIN PH
8.3
7.1
GROUP 3
MEAN 38.2 107.3 41.4 525.4 6.2 0.0 332.6 333.4 677.1 2.4 19.2 1914.2
STD DEVIATION 22.67 62.50 17.35 299.91 8.65 0.00 87.25 263.42 397.27 4.15 23.53 920.45
MAX READING 86 356 87 1230 29 I) 574 975 1680 22 85.7 4056
MIN READING 15 30 13 185 0 0 204 66 233 0.4 0 8:,5
4H.
221,(
11'
MAX
PH
mPH
8.3
7.7
GROUP 4
MEAN 16.6 62.4 24.0 622.4 5.7 0.0 243.3 294.0 799.3 1.1 3.7 1949.4
STD DEVIATION 5.88 55.54 17.92134.78 6.82 0.00 57.33 97.50 313.34 0.67 5.63 543.(19
MAl READING 23 174 48 808 19 0 320 446 1156 2.S 14.6 2562
MIN READING 0 • 2 1 410 0 0 120 192 324 0.1 0 1111
256.
205. ~
61
Notes: Please refer to Figure 25 entitled Approximate Productive Areas of the Major Sources of
Groundwater in the Lower Rio Grande Valley for proper identification of Groups 1-4.