P12-201-4531 NA Klamath Project, OR-CA. View shows open gates on Ady Canal after they had been closed to make 84" RCP crossing under Straits Drain; February 1978; USBR ph[...]

P12-201-4425 NA Klamath Project, OR-CA. Ady Canal--Showing Hwy 97 tunnel west side of 94" tunnel liner plate enclosing 84" CMP carrier pipe; September 9, 1977; USBR pho[...]

P12-201-4455 NA Klamath Project, OR-CA. Ady Canal--View of siphon pipe laying operation looking from hwy. west toward RR. Pettibone 30 Multicrane used for lifting; Sept[...]

P12-201-4429 NA Klamath Project, OR-CA. Ady Canal, U.S. Hway 97 and SPRR siphon--View looking east of west portal of tunnel under Hwy 97. Bobcat loader. Contractor's ve[...]

P12-201-4400 NA Klamath Project, OR-CA. Ady Canal Siphon--Bulkhead shoring on west side of U.S. 97. Piling used are surplus douglas fir from Plant EE jobsite. Shoring ti[...]

P12-201-4428 NA Klamath Project, OR-CA. Ady Canal--due to damaged gates, contractor building a bulkhead for dewatering Ady Canal to excavate for siphon; August 29, 1977[...]

P12-201-4413 NA Klamath Project, OR-CA. Ady Canal--View of existing road surface prior to tunneling under U.S. Hwy. 97; August 4, 1977; USBR photo by D.J. Kline

P12-201-4422 NA Klamath Project, OR-CA. Ady Canal--1'x1' steel H beam was used between kickers and tunnel cribbing; August 25, 1977; USBR photo by D.J. Kline

P12-201-4403 NA Klamath Project, OR-CA. Ady Canal Siphon--Excavation and shoring on west side of SP RR track. Shoring here consists of two 2"x12" timbers nailed together[...]

P12-201-4416 NA Klamath Project, OR-CA. Ady Canal--Entrance way into tunnel. Mining operations have just begun; August 9, 1977; USBR photo by D.J. Kline