The economy of nearby Page, AZ is critically linked to the water level in Lake Powell, with its two-story houseboats and deep-throated speedboats. Paddling a kayak from Wahweap Marina (on left) to Antelope Island (due east) requires dealing with wake from all angles, evoking an excursion on Nantucket Sound. The sapphire lake contrasts with pink sandstone mesas: a hot, bright playground for world tourists. Still, it’s hard not to think about evaporation and critical water demands that the Colorado River cannot meet. This play pool will dry up.