“Drowned City” is a captivating graphic novel that recounts the events and effects of Hurricane Katrina. It starts off with a wind leaving Africa and follows the story through the devastation in Florida, Mississippi and ending with the catastrophe that devastated New Orleans. Drawn in watercolor, the pictures tell a broader story than the sparse text on the page. This is a compelling recount not only the extraordinary weather pattern, but also the aftermath, government blunders and the heroism of volunteers and rescue workers.