Interesting and beautiful depiction of the Mississippi River. Each color marks a different course that the river has taken throughout its history. (Fisk, Map of ancient courses of the Mississippi River, Cape Girardeau, MO - Donaldsonville, LA.
Drew Beck suggested that I make this. The data is from the archive of SFPD reports since "Sex" = prostitution and non-forcible sex offenses "Drugs" = drugs and narcotics "Rock & Roll" = drunkenness and disturbing the peace