WSP07190

• File Number: 8220.124.A
• Description: Pine River
• State: CO
• Basin: San Juan/Dolores
• Water Division: 7
• Date: 1/1/1942
• Title: Preliminary Investigation Proposed Pine River Irrigation Project: Preliminary Report
• Water Supply Pro - Doc Type: Report/Study

Table .3 gives the peroentage of yields (table 1 yields) expected from

various lands under three grades of management.

Class 1 lands are not rated 100 per oent beoause part of the areas ia-

elude soils that are too heavy in texture to readily produoe high yields,

especially under the lower gre~es of management.

Table 2. Yields (in percentage of that for "best" soils)
lllxpeoted under !L'hree Grades of Management

Land Olass

Grades Gf Manall:emen\
Best Good Averall:e

No. 1
No. 2

100
90

95
80

90
70

Aoreas:es of La:il.d Classes and of
Project Area

No. 1 land (below proposed ditch) . . . .
No. :3 land (below propGsed ditch) . . . .
Irrigated land~ . . . . . . . . ... .".
No. 1 land non-irrigated (25% of irrigated,
No. 2 land non-irrigated (7~ of irrigated,
Tote.1N'o. 1 land (irrigated andirrigable). . .
Tota.l No.2 lend (irrigated and irrigable).
~otal irrigated and irrigable . . . . . . . . . . .
NGn-irrigable in projeot below ditoh

(No. 6 land). . . . . . . .. . . . . . . . . .
Total area of FSA portion of project

above ditch . . . . . . . . . . . . . . " . . . .
in project below d,iton. . . . . . . . . . . . ..

. . . .

. .

2,332 acres
7,119 acres
5,534 acres
1,383 acres
4,150 acres
3,715 aores
11,269 acres
14,985 acres

. .

. .

. . . . . . .
estimated). .
estimated). .

.

. .

. .

. . . .

. .

. .

13,977 acres

. .

5,358 acres
28,962.aores

. .

Soil Manall:ement Problems

Soil~ Glassed No. 1

Soils in this class are deep, friable, moderate to somewhat heavy in texture

and ooour in large areas ot gentle slope. They can be leveled for trrigat-

1ng without noticeable effect on the produetive capaoity of the soil.