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Hydrogeologic Framework and Simulation of Ground-Water Flow and Travel Time in the Shallow Aquifer System in the Area of Naval Support Activity Memphis, Millington, Tennessee 

Table 6. Measured water levels in the A1 aquifer, April 8-26 and October 23-25, 1996, mean water levels in the A1 aquifer, and water levels simulated for layer 1 of the calibrated flow model of the shallow aquifer system in the area of Naval Support Activity Memphis, Millington, Tennessee 
[Modified from Carmichael and others, 1997]
USGS 
local well
number
Altitude of
land
surface, in
feet above
sea level
Depth to
water, in
feet, on
April 8-26,
1996
Depth to water, in
feet, on
October 22-24, 1996
Mean depth to water
Mean water
level used for
model
calibration, in
feet above
sea level
Simulated
water level, in
feet above
sea level
Alluvium
Sh:V-117
267
7.27
    13.51
    10.39
    257
    256
Sh:V-121
267
10.82
    14.48
    12.65
    254
    255
Sh:V-124
267
15.31
    20.62
    17.96
    249
    251
Sh:V-127
270
9.55
    17.12
    13.34
    257
    255
Sh:V-130
267
3.95
    10.96
    7.46
    260
    259
Sh:V-133
267
3.29
    9.51
    6.40
    261
    258
Sh:V-134
269
4.90
    10.28
    7.59
    261
    260
Sh:V-173
270
17.94
    21.26
    19.60
    250
    250
Sh:V-175
267
13.92
    17.50
    15.71
    251
    249
Sh:V-176
268
17.95
    20.84
    19.40
    249
    248
Sh:V-187 
264
7.68
    12.50
    10.09
    254
    252
Fluvial deposits
Sh:U-33
263
47.98
    49.55
    48.76
    214
    216
Sh:U-101
275
17.64
    21.20
    19.42
    256
    256
Sh:U-107
266
12.90
    16.18
    14.54
    251
    249
Sh:U-110
268
11.55
    14.96
    13.26
    255
    252
Sh:U-112
267
9.73
    12.95
    11.34
    256
    254
Sh:U-115
269
17.96
    21.43
    19.70
    249
    247
Sh:U-119
282
53.08
    54.35
    53.72
    228
    230
Sh:U-121
274
28.66
    30.46
    29.56
    244
    243
Sh:U-133
278
23.17
    25.64
    24.40
    254
    254
Sh:U-135
264
14.82
    17.69
    16.26
    248
    248
Sh:U-138
291
46.18
    46.73
    46.46
    245
    248
Sh:U-152
265
46.42
    Not measured
    Not measured
    218
    217
Sh:U-153
292
41.88
    43.84
    42.86
    249
    250
Sh:V-81
294
48.20
    49.43
    48.82
    245
    244
Sh:V-83
284
28.31
    31.20
    29.76
    254
    254
Sh:V-85
272
9.06
    13.18
    11.12
    261
    258
Sh:V-89
284
24.90
    27.81
    26.36
    258
    258
Sh:V-107
296
34.34
    38.36
    36.35
    260
    259
Sh:V-112
300
46.02
    48.24
    47.13
    253
    252
Sh:V-113
313
53.48
    56.08
    54.78
    258
    257
Sh:V-114
269
9.28
    12.03
    10.66
    258
    260
Sh:V-115
290
34.33
    36.48
    35.40
    255
    253
Sh:V-164
282
33.68
    35.07
    34.38
    248
    249
Sh:V-166
289
36.00
    37.23
    36.62
    252
    251
Sh:V-168
297
38.21
    40.81
    39.51
    257
    255
Sh:V-171
285
26.94
    29.45
    28.20
    257
    255
Sh:V-180
269
8.37
    9.87
    9.12
    260
    260
Sh:V-189
320
63.47
    63.92
    63.70
    256
    256
Cockfield Formation
Sh:V-108
289
23.46
    28.68
    26.07
    263
    258
Sh:V-110
320
36.69
    38.63
    37.66
    282
    283
Sh:V-111
321
34.90
    35.80
    35.35
    286
    284
 

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