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Show ILLUSTRATIONS Page Figure 1. Map of Great Salt Lake showing location of causeway, chemical- quality sampling lines, and dye- injection points 8 2. Photographs of causeway across Great Salt Lake and of one of the culverts in the causeway 10 3. Graph showing relationship of dissolved- solids concentration to stage of Great Salt Lake 11 4. Hydrograph showing variation in stage difference between north and south parts of Great Salt Lake 13 5. Graph showing approximate concentration gradients for south part of Great Salt Lake 14 6. Schematic drawing of Southern Pacific Co. causeway showing directions of flow 15 7. Hydrograph showing altitude and actual and theoretical dissolved- solids concentration of water in south part of Great Salt Lake 16 8. Graph showing ratio of magnesium to chloride in samples collected from Great Salt Lake before and after construction of the causeway 18 9. Graph showing representative velocity profiles for discharge in the east culvert 20 10. Graph showing relationship of discharge in the east culvert to stage difference across the causeway 21 11. Graph showing relation of lake stage to stage difference across the causeway during 1969 water year 22 12. Graph showing variation of load of dissolved solids in Great Salt Lake, 1959- 69 26 13. Graph showing relationship of volume and concentration of dissolved solids in the upper layer of brine in the south part of Great Salt Lake 27 4 |