To find binary base map data for a specific geographic area, click on the appropriate 30 by 60 minute quadrangle on the state map below. A Web page containing a graphic of the 30 by 60 minute quadrangle will display eight subdivided 15 by 15 minute quadrangles. Alternatively, you can choose from an alphabetical text list of available 30 by 60 minute quadrangles.

| Amboy | Beatty | Big Bear Lake | Blythe | Borrego Valley | Cambria | Coalinga | Cuddeback Lake | Cuyama | Darwin Hills | Davis Dam | Death Valley Junction | Delano | Eagle Mountains | El Cajon | El Centro | Fresno | Isabella Lake | Ivanpah | Laguna Harbor | Lancaster | Las Vegas | Long Beach | Los Angeles | Mendota | Mesquite | Monterey | Mount Whitney | Needles | Newberry Springs | Oceanside | Owlshead Mountains | Palm Springs | Parker | Paso Robles | Point Conception | Point Estero | Point Sur | Ridgecrest | Saline Valley | Salton Sea | San Bernardino | San Clemente | San Diego | San Luis Obispo | San Nicolas | Santa Ana | Santa Barbara | Santa Catalina Island | Santa Cruz | Santa Maria | Santa Rosa Island | Sheep Hole Mountains | Soda Mountains | Taft | Tehachapii | Threeri | Trigomo | Victorville | Visalia | Yuma |