WSP00118

• File Number: 8449.921
• Description: Lower Platte Tri-County Project Water Demand & Power Studies
• State: NE
• Basin: South Platte
• Date: 1/1/1923
• Author: Univer. Of Nebraska
• Title: Report of Certain Investigations on the Central Nebraska Supplemental Irrigation Project
• Water Supply Pro - Doc Type: Publication

230

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REPORT OF' SECRETARY

samples~ The average results for the six feet are shown in Table 11,
for each point studied. Froin these determinations there is shown the
calculated field carrying capacity of the soil and the available water
capacity in inches for tr.e total six feet.

The determinations made thruout the area show that the. soils
have a uniformly high water holding capacity. The total water
capacity in the upper six feet is 22.86 inches. Of this more than
half.-12.28 inches,-would be available for the use 'of the crop. This
is a high available water capacity. It means that on the llverage

TABLE NO. IO.-Relation of Mohcture Equivalent to Fjeld Carrying CapacJq
In ltlulched Saturation Pits.

Depth
in
Feet

1
2
3
4
5
6
Ave

....

1
2
3
4
5
6
Ave

1
2
3
4
5
6
Ave

'.-

Percent
Water
June 25

Ratio
F.e.C.

Percent
Water
June 25

M.E.

Ratio
F.C.C.

Moisture
EquIvalent

Moisture
Equivalent

Holdrege
27.1
26.7
26.1
26.0
25.2
26.3
.26.9

M.E..

Hastings College
30.4 29.1 1.04
26.8 30:6 ..88
23.0 29.3 .78
22.0 25.8 .85
21.8 24.9 .88
22.4 25.4 .88
24.4 ..27.5 .89

31.1
24.4
21.9
22.6
23.2
23.3
f4.4

1.15
.91
.84
.87
.92
.89
.93

'-

29.~
26.2
24.8
22.2
21.2
22.8
24.5

Ingleslde
26.7
28.9
29.8
29.2
26.3
. 25.6
27.8

.'

Swedish MIM!don
31.2 27.4
24.5 27.1
20.9 27.5
21.2 25.8
21.4 25.0
21.8 23.5
23.5 26.1

1.11
.91
.83
.76
.81
.89
.90

1.14
.90
.76
.82
.86
.93
.90

30.5
26.6
27.2
24.9
25.2
24.2
26.4

Norman
25.0
26.7
29.3
29.1
29.2
27.1
27.7

29.0
24.4
21.2
21.2
20.9
.21.0
23.0

Bertrand
24.5
27.9
24.3
. 24.4
22.6
22.5
24.4

1.18
.88
.87
.87
.92
.93
.94

1.22
1.00
.93
.86
.86
.89
.96

~.....

more than 2 inches of available water can be stored in each foot
section of the soil and that it is possible to carry in the soil a total
of 12 inches of water within the root zone of most of the farm crops.

The Feeding Depth of Crop Plats.

It will be noted that the water carrying capacity of the soil.
was determined for a six foot column of soil. This was. done. in order-
to include the root zone for the common farm crops.. Most of the
farm crops feed deeper than is ordinarily supposed and are able to
recover any available water within the limit of their root zone,

,.--"