16 
BULLETIN 1456, TJ. S. DEPARTMENT OF AGRICULTURE 
making such observations, and represent conditions in the immediate 
vicinity of the drain. The locations of the test wells are shown in 
Figure 10. 
Table 3. — Highest water levels in area F, October, 1920, and Octooer, 1923 
Location of test well 
Depth to water 
October, 1920 
Depth to water 
October, 1923 
S. M corner sec. 8, T. 1 S., R. 2 E _. 
Feet 
3.0 
13.8 
4.5 
2.8 
2.9 
4.3 
Feet 
3.1 
W. M corner sec. 9, T. 1 S., R. 2 E 
4.7 
NE. corner SE. U SW. y A sec. 8, T. 1 S., R. 2 E 
NW. corner SW. \i NE. 34 sec. 9, T. 1 S., R. 2 E 
5.0 
5.0 
N. V± corner sec. 9, T. 1 S., R 2E _ __ 
5.0 
NW. corner SW. M SW. M sec. 9, T. 1 S., R. 2 E 
6.0 
3.6 
4.8 
<20 
40 
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2000 1000 1000 2000. 
Oistance.Easf and West from Pumping Planter. Feet 
i Water level October, 1919, used for this well because the October, 1920, reading of 8 feet appears to be 
erroneous. 
Hence between October, 1920, and October, 1923, the drain had 
effected a lowering of the water level of only 1.2 feet. The curve for 
this area shown in Figure 12, which is based on the records of 13 
test wells, shows an even 
smaller drop in the water level 
between these two dates. The 
small improvement in this area 
has been due in part at least to 
the presence of a second deep 
open drain through lower lands 
outside the project but adjoin- 
ing area F on the north. The 
bottom of this second drain is 
some 25 or 30 feet lower than 
the land surface in area F, thus 
affording an unusual depth of 
drainage for these lands. 
A further indication that 
gravity ditches are not suffi- 
ciently effective wherever a thick 
stratum of relatively tight sub- 
soil is encountered is present in 
the water-logged lands adjoin- 
ing area E on the west. An 
open ditch about 7 miles long 
and averaging about 9 feet in 
depth was constructed through this district 10 years or more ago. 
A marked improvement in the productivity of soil in portions of 
this area has resulted, but landowners are not entirely satisfied with 
the results, and have requested that their farms be taken into the 
Salt Eiver project in order to benefit from the effective drainage 
afforded by pumping from wells. It should be stated, however, that 
the drain referred to was never completed as original plans provided. 
Plate 3 shows two recent views of lands in this area which are 
badly water-logged and damaged by alkali. The view shown as Plate 
«k 0- 
Ql 
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40. 
2C 
00 
10 
00 
3 
10 
DO 
20C 

Disfanoe,Nopfh and South from Pumping Rant, tri Fe et 
Fig. 13. — Fluctuations of water level sur- 
rounding pumping plant in area D 
