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• CONTENTS (Continued) Hydrosalinity (Continued) Page Chapter IV G round water geohydrology (continued) Aquifer characteristics (continued) Ground water observation system. 38 Gradients . 41 Transmissivity and permeability. 41 Storage . 47 Ground water quality 47 Chapter V S alinity mechanisms. . 55 Water and salt mechanisms in the Reed Wash study area. 55 Outflow hydrology . 58 Water and salt budgets . 66 Selected bibliography 76 Attachments Attachment 1 Stiff diagram-base flow conditions--Colorado River at Cameo . 78 Attachment 2 Stiff diagram-base flow conditions--Plateau Creek at sampling station GV-6. 79 Attachment 3 Stiff diagram-base flow conditions--Gunnison River at sampling station GV-140.5. 80 Attachment 4 -Colorado Stiff diagram-base flow conditions • • • , River at State line 81 Attachment 5 Grand Valley Unit seepage from canals 82 Attachment 6 Schematic cross-section of AP wells along Q Road, Section A-A'. • 83 Attachment 7 AP wells along Schematic cross-section of 0~ Road, Section B-B' . 84 Attachment 8 Schematic cross-section of AP wells along 14 Road, Section C-C' 85 Attachment 9 Geologic log of drill Hole AP-Z 86 Attachment 10 Geologic log of drill Hole AP-11. . 87 Attachment 11 Geologic log of drill Hole AP-22. 88 Attachment 12 Total dissolved solids, irrigation season, Reed Wash study area. 89 Attachment 13 TDS difference between nonirrigation and irrigation seasons . . 90 Attachment 14 Salt load comparisons between 1974-75 and 1975 seepage runs 91 Attachment 15 Comparison of flows, 1975-76 seepage run. 92 Attachment 16 Comparison of total dissolved solids, 1975-76 seepage run 93 Attachment 17 Comparison of salt load, 1975-76 seepage run. 94 Attachment 18 Column explanations for the water budget. 95-97 Attachment 18 Reed Wash study area water budget values, preproject budget 1976. . 98 Attachment 19 values, Reed Wash study area salt budget • . • preproject budget 1976. 99 ii