14 
BULLETIN 1456, U. S. DEPARTMENT OF AGRICULTURE 
Table 2. — Highest water levels occurring in areas A, B, C, D, and E in October, 
1923 
Area A 
Area B 
Area C 
Area D 
AreaE 
Location 
Depth 
Location 
Depth 
Location 
Depth 
Location 
Depth 
Location 
Depth 
of test 
to 
of test 
to 
of test 
to 
of test 
to 
of test 
to 
well 
water 
well 
water 
well 
water 
well 
water 
well 
water 
Feet 
Feet 
Feet 
Feet 
Feet 
NW. corner 
NW. cor. 
W \i cor. 
SW. cor. 
NW. cor. 
sec. 19, T. 2 
sw. x 
sec. 13, T. 
NE. 14, 
sec. 6, T. 
N„ R. 1 E„ 
6.7 
SW. M 
1 N., R. 
sw. y, 
2 S., R. 
sec. 28, T. 
2E 
6.4 
sec. 21, T. 
5E._ 
3.0 
1 N., R. 
2 N., R. 
IE 
4.9 
3E 
3.6 
SW. corner 
NE. cor. 
SW. cor. 
W. 14 cor. 
W. y cor. 
sec. 33, T. 3 
sec. 20, 
sec. 15, 
sec. 28, 
sec. 35, 
N., R. IE. 
8.8+ 
T. 1 N., 
T. 1 N, 
T. 2 N., 
T. 1 S., 
R. 1. E... 
6.8 
R.2E... 
6.9 
R.4E... 
5.9 
R.4E... 
3.8 
W. 14 corner 
NW. cor. 
SW. cor. 
W. y cor. 
NW. cor. 
sec. 17, T. 
SW K, 
sec. 18, 
sec. 17, 
SW. y 
2N..E.1E. 
9.3 
NW. ]4 
T. 1 N., 
T. 2 N., 
sw. y 
sec. 20, 
R.3E... 
7.1 
R. 3E___ 
6.0 
sec. 31, 
T. 1J N., 
T. 1 S., 
R. 1 E._- 
7.0 
R. 5E__. 
4.1 
W. 14 corner 
W. }4 cor. 
S. M eor. 
NW. cor. 
W. 14 cor. 
sec. 20, T. 
sec. 29, 
sec. 7, T. 
SW. y 
sec. 31, 
2N.,R. IE. 
9.3+ 
T. 1 N., 
1 N., R. 
NE. y 
T. 1 S., 
R. 1 E__. 
7.9 
3E 
7.5 
sec. 21, T. 
2 N., R. 
3E 
6.1 
E.5E... 
4.9 
W. M corner 
NW cor. 
NW. cor. 
Center cor. 
NW. cor. 
sec. 29, T. 
SW. M, 
SW. M, 
sec. 19, 
SW. 14, 
2N..E.1E. 
10.5 
NW. y, 
NW. M, 
T. 2 N., 
SW. y, 
sec. 21, 
sec. 18, 
R.3E... 
6.1 
sec. -35, 
• 
T. 1 N., 
T. 1 N., 
T. 1 S., 
R. IE... 
8.7+ 
R.3E... 
7.8 
R.4E... 
5.9 
SW. corner 
NW. cor. 
W. y% cor. 
Center cor. 
SW. cor. 
sec. 31, T. 
sec. 21, 
sec. 14, 
sec. 29, 
ne. y±, 
2N., R. IE- 
12.2 
T. 1 N., 
T. 1 N, 
T. 2 N., 
sw. M, 
R. IE... 
9.0+ 
R. 2E___ 
7.9 
R. 4E... 
6.5 
sec. 34, 
T. 1 S., 
Average- - 
E.4E... 
6.3 
9.5- 
7.4- 
7.3- 
5.7 
4.7- 
TT 
The influence of pumping from individual wells upon surrounding 
ground-water levels was ascertained in areas D and E, which repre- 
sent the two extreme underground conditions met in the valley. 
Figure 13 shows the configuration of the ground-water level result- 
ing from the operation of the drainage pump on the east line of 
section 20, T. 2 N. 5 K. 3 E. This well was sunk to a depth of 285 
feet entirely in clay and caliche (fig. 7). The capacity of the pump- 
ing plant is 1.5 second-feet. Draw-down of the water surface in the 
well during operation of the pump is about 60 feet. Curve a in 
Figure 13 represents the ground- water level just before the drainage 
pump was first started, and curve b shows its position after four 
months of pumping, during which 193 acre-feet of water were re- 
moved. The performance of this well while being pumped and the 
effect of its operation on the ground-water level show that clay and 
caliche do not yield large quantities of water readily ; that drainage 
wells in such formations should be uniformly distributed at intervals 
of probably not more than one-half mile; and that only pumps of 
small capacity will be required. 
Figure 14 shows the effect on the water table of the operation of 
the drainage pump located at the northeast corner of section 11, T. 
1 S., R. 5 E. The coarse gravel and bowlder formation which ex- 
