Every July and August, the Arizona skies darken, the thunder rolls, and the monsoon rains pour down. While the rain is a welcome relief from the scorching desert heat, it completely changes the game for local divers heading to Lake Pleasant. Wondering why your favorite dive site suddenly looks like chocolate milk, or where the clear water is hiding? Here is your hyper-local guide to understanding monsoon runoff, shifting visibility, and how to plan your late-summer dives.