The Bitterwater Planning Unit is bounded on the west by Death Valley National Monument, on the north and east by the California Nevada border, and on the south by the Inyo-san Bernadino County Line. The northern half of the Owlshead/ Amargosa Planning Unit is bounded on the north by Death Valley National Monument and the Inyo San Bernadino County line, on the west by the U.S. Ordnance Test Station and Camp Irwin Military Reservation, and includes the upper 1/3 of township 17 in the south