This collection is from the Southern California Office of DWR. They donated many primary and original documents used to write DWR reports and studies. The Collection is a sizeable gift and covers all three of our watersheds of interest; Santa Ana Watershed, Mojave Watershed, and the Salton Sea/Whitewater/ Coachella area. It covers a time period of 1960’s to present day. It contains reports, maps, studies, photos, plans and historic data.