'Surviving Grand Canyon: It's All About Water' is Part 1 of 5 in the series based on 'A Walk in the Deep Big Empty: The Science for Surviving Grand Canyon.' Survival topics discussed all revolve around the importance of Water: (1) Dehydration, (2) Hyperthermia, (3) Hyponatremia, (4) Voluntary Dehydration, (5) Water Discipline and Water Rationing, (6) Should you Drink Urine? (7) Getting Water-and-Salt Calibrated, (8) What the Desert 'Experts' recommend, (9) Water Quality and Sources at Grand Canyon, (10) Breccia pipes and Radioactivity, (11) To Drink or Not, (12) Canyon geology and finding water (13) Seeps, Puddles, and Potholes, (14) How to treat water to make it safe, (15) Flash floods, (16) Trapped in a Waterfall, (17) Water Management and Planning your Hike.Successful and tragic 'thirsty hiker' scenarios are analyzed for what went right--and what went wrong.