Original photograph: 18 x 13 cm, black & white photo, caption under photo reads "KP-1533-R2 - Klamath Project. Coppock Bay. M-2-a-2 Lateral and parallel drain, showing ground water in drain and uncompacted embankment of Type "C" Lining. Dorwin Grise, Photographer. August 29, 1947", from Black Binders Digital reproduction of photograph: KP-1533-R2 - Klamath Project, Black Binders, Bureau of Reclamation