7420

• UCREFRP Catalog Number: 7420
• Author: U.S. Bureau of Reclamation.
• Title: Colorado River Basin Salinity Control Project, Stage One Development, Grand Valley Unit Definite Plan Report.
• USFW Year: 1978.
• USFW - Doc Type: \
• Copyright Material: NO

• FIGURES
Hydrosalinity
Number P-~
1 USGS gaging stations located in the vicinity of Grand
Valley .
• 6
2 sedimentation, Stage One area,
Exposed shale and bottom
Government Highline Canal 24
3 Schematic cross section of the Grand Valley, Cola.. • 35
4 Stage One area, subsurface geology. 36
5 Drain cut adjacent to the Government Highline Canal 39
6 Areas with water table and artesian conditions. 42
7 Ground water observation well AP 27 43
8 Potentiometric contour map, irrigation season, Reed
Wash study area • 44
9 Water table difference between irrigation and non-
irrigation seasons.
•
• 45
48
10 in Reed Wash
quality
Stiff diagrams showing water
11 Composite fluctuation of piezometric surface vs. change
in electrical conductivity in artesian wells in the
Reed Wash study area. 51
12 Composite fluctuation of water table depth vs. elec-
trical conductivity in alluvial wells (APES) in the
Reed Wash study area. . 52
13 in unweathered
quality
water
showing
Stiff diagrams
• •
•
•
•
•
shale
54
14 Location of sections used in calculation of aquifer
-
capacity, Reed Wash study area. 56
15 Major drainage subbasins . • 59
16 Average flow, total dissolved solids, and tonnage for
Grand Valley drainage system. 62
17 Stage One existing drains 64
18 Reed Wash study area, water budget, preproject. 67
19 Reed Wash study area, salt budget, preproject 68
20 Stage One area, water budget, preproject. 69
21 Stage One area, salt budget, preproject 70
22 Reed Wash study area, water budget, postproject 71
23 Reed Wash study area, salt budget, postproject. 72
24 Stage One area, water budget, postproject 73
25 Stage One area, salt budget, postproject. 74
26 Flow at Reed Wash 75
•
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