P-12-200-4233NA Klamath Project - Oregon-California. Rotary drill rig drilling wells for dewatering Pumping Plant "EE" site. Site was excavated to elev. 4070± and 24" wells were drilled 30± feet; 10" perforated pipe was installed, the back-filled with coarse sand. Perforated pipe can be seen in foreground; September 1976 USBR photo by D. W. Stein