Ground-water development in East St. Louis area, Illinois. Urbana, IL ...

Table 23 (Continued)
Water level changes
Water level changes
Water levels, June 1962 (ft) Water levels, June 1962 (ft)
Elevation
Elevation
of meas- Mean sea From From No- of meas- Mean sea From From Nouring
Depth to level June 1961 vember 1961 uring Depth to level June 1961 vember 1961
WPII Point watpr elevation to to Well point water elevation to to
number (ft) (fQ (ft) June 1962 June 1962 number (ft) (ft) (ft) June 1962 June 1962
3N10W-(Continued)
2N9W-( Continued)
26.7d 411.2 10.21 400.98 +1.24 +1.60 23.6g 397.5 4.04 393.46 +3.63 +1.37
26.8e 411.1 10.16 400.94 +1.53 +1.81 23.7a 406.5 24.59 381.91 +0.89 +0.72
26.8h 411.8 10.80 401.00 +1.57 +1.76 23.7b 408.2 20.63 387.57 +0.84 +1.97
35.6f 401.8 0.97 400.80 +4.21 +5.22 26.1gl 411.37 72.50 338.87
35.6h 404.6 4.19 399.60 +1.02 26.1g2 411.24 65.50 345.74 +2.50 —1.90
36.5h 414.25 13.29 400.96 +3.16 +3.81 26.2e 413.70 61.67 352.03 —0.83
STC
26.3g 411.80 55.33 356.47
2N8W-
26.5h 408.76 34.30 374.46 +1.22 +0.15
6.1d 425 17.20 407.80 +2.02 +4.28 27.2hl 415.65 62.25 353.40 —9.85
6.8d 429.27 15.00 414.27 +1.00 +7.00 33.2f 409.35 13.11 396.24 +2.94 +2.34
7.2h2 430 22.63 407.37 +5.72 34.7c 399.1 5.25 393.85 +0.14 +2.52
34.8b 398.0 3.58 394.42 —0.08 +2.60
2N9W-
2.4e
3.4g
3.8a
418.5
422
424
6.85
15.44
23.01
411.65
406.56
400.99
+0.95
+0.56
+1.98
+3.05
+3.25
+2.67
1N9W-
4.5e
6.2a
411
416.
8.49
18.43
402.51
397.57
+0.84
—0.39
+3.42
+2.20
7.5e 420 33.60 386.40 +2.98 +2.56 1N10W-
7.6e 420 34.03 385.97 +5.37 4.1g 399.0 3.99 395.01 —0.49 +2.15
11.7h 419 11.85 407.15 +1.71 +3.53 4.2e 396.4 1.04 395.36 —0.34 +1.76
12.5d 420 7.88 412.12 +0.76 +4.66 4.3b 398.6 2.95 395.65 —0.17 +1.08
13.6c 421.70 12.00 409.70 +1.00 +4.33 4.3c 397.7 2.27 395.43 +0.50 +1.10
14.5c 425 18.38 406.62 +3.17 +3.39 4.7b 409.4 12.85 396.55 +0.95 +2.47
15.3b 413 8.16 404.84 +3.21 +4.74 8.2h 407.8 11.11 396.69 +0.72 +2.76
15.7a 420 18.32 401.68 +2.13 +2.97 8.5c 405.1 8.27 396.83 —0.27 +3.64
17.2d 415 17.60 397.40 +1.76 +0.88 8.7a 406.3 9.89 396.41 —0.23 +2.00
17.8f 417.21 24.12 393.09 +2.43 +1.37 9.1f 403.63 5.65 397.98 +0.84 +1.97
18.3a 416.5 22.60 393.90 +2.89 +1.41 9.2h 404.55 6.94 397.61 +0.52 +1.68
19.8e 418.78 31.24 387.54 +0.81 9.4h 409.9 13.93 395.97 +0.78 +1.83
21.7h 410 15.18 394.82 +2.38 +2.14 10.1c 403.29 5.14 398.15 +0.94 +1.94
23.4a 423.86 10.98 412.88 —1.98 +4.87 10.4c 402.24 4.23 398.01 +0.82 +1.89
24.6e 428 16.42 411.58 —0.89 +4.14 12.5b 401.74 3.09 398.65 —0.23 +0.95
26.7f 424.18 15.24 408.94 —0.07 +2.86 13.3h 402.25 3.43 398.82 —0.32 +0.68
26.8f 421.39 12.78 408.61 —0.01 +2.84 16.2g 411.5 10.96 400.54 +2.66 +3.26
27.8g 415 9.44 405.56 +2.36 17.1e 400 3.75 396.25 —0.71 +3.67
28.4g 409 1.55 407.45 +2.15 19.6f 406.4 10.21 396.19 —1.03 +2.52
30.6d 415 25.53 389.47 +0.88 +1.94 21.1a 410 13.63 396.37 +0.68 —3.38
32.2c 408 12.28 395.72 +0.73 +2.58 21.4f 412.01 13.85 398.16 +2.92
34.4h 417 12.06 404.94 —0.02 +2.18 28.6a 405 9.54 395.46 +0.38 +2.93
1.2h 412 20.15 391.85 +2.42 +3.38 30.6h 405.3 9.30 396.00 —0.99 +2.54
1.3al 418.4 31.0 387.40 32.3e 414 18.81 395.91 +4.19 +5.10
12.3c 418.54 29.62 388.92 +2.53 +6.92 MON—
12.7g 410 23.91 386.09 +1.06 +2.41 1N10W-
23.4c 399.72 19.94 379.78 +1.25 +1.43 30.8b 408.1 12.01 396.01 —0.85 +2.34
23.6f 415.7 23.49 392.21 +3.30 +5.37 31.4d 407 10.55 396.45 +1.14 +3.30
pumping centers and exceeded 30 feet per mile within
the Monsanto cone of depression. Gradients averaged
about 10 feet per mile within the Alton, Granite City,
National City, and Wood River cones of depression.
Along Canteen Creek and Cahokia Canal east of
Horseshoe Lake, Long Lake, and Grand Marais State
Park Lake, the piezometric surface was higher than the
surface-water elevation and ground water was discharged
into these streams and lakes. Below the confluence of
Canteen Creek and Cahokia Canal south of Horseshoe
Lake the piezometric surface was lower than surfacewater
elevations of Cahokia Canal at places where water
levels have declined as the result of heavy pumping.
Surface water in the Cahokia Diversion Channel south of
the Wood River is kept above the piezometric surface at
an elevation of 413 feet by a low water dam near the
outlet of the channel. Surface-water levels are also controlled
in Chain of Rocks Canal by Lock No. 27 near
Granite City and were higher than the piezometric surface
adjacent to the canal. The piezometric surface in
the vicinity of Wood River near Alton and Prairie Du
Pont Creek south of Monsanto was slightly higher than
the surface-water elevations of the streams. At the
lower end of Horseshoe Lake north of National City,
43