Spillway and drum gate construction--observation point

View of the dam with newly constructed observation building in the foreground

1941-07-04

Riverbanks and slope protection--initial run of the floating caisson

Specifications No. 2475, March, 23, 1949. This is picture No. 4 of a series of thirteen showing movements of the floating caisson on its initial trial run from the drydock to the spillway bucket. The caisson is at station A29+98.38/B5+97.92 at...

1949-03-23

Site preparation--excavation

A view of early excavation operations at Grand Coulee

2024-04-19

Equipment failures--scoring on brake piston

Scoring of the leading side of generator break piston #1 due to its tilting during jacking of the rotor. Top of piston is in lathe chuck--leather is removed from the bottom of piston. Unit L-1, Grand Coulee Power Plant

1946-10-16

Riverbanks and slope protection--anchored caisson

Specification No. 2475, March 24, 1949. When this photograph was taken the floating caisson was anchored by its ""A"" frame to the spillway bucket section. The caisson barge with machinery for operating the caisson is between the towers. At the...

1949-03-24

Riverbanks and slope protection--submerging the floating caisson

Specifications No. 2475, March 24, 1949. This photograph was taken as the floating caisson was being submerged in the spillway bucket during its initial trial operation. The caisson barge with operating equipment is shown floating between the...

1949-03-24

Equipment failures--thrust bearing discs for unit L-3

View of eight thrust bearing discs for unit L-3. The discs are laying upside down to indicate worn spots in the centers where the jack screws had made contact. The depth of these holes varied from 0.005"" to 0.007"" Grand Coulee Power...

1945-10-22

Employee housing-- 1941

Shot with a wide angle lens, a view of the dam with employee housing on both sides of the Columbia

1941-05-22

Site preparation--machinery used for excavation

A 5-yard electric shovel, 10-yard dump buggy and 75 H.P. diesel Caterpillar used for excavating in the west side river diversion channel

1936-07-30

Powerhouse construction--East Powerhouse foundation [02]

Progress photos of the East Powerhouse as of date.

1941-08-07

Powerhouse construction--powerhouse bays

Bays 1-2 and 3 in East Powerhouse.

1942-02-23

Spillway and drum gate construction--hoisting elevator shaft

Hoisting elevator shaft form into place. 3 men riding load.

1941-06-30

Spillway and drum gate construction--aligning the drum gates

Aim crosshairs for aligning drum gates.

1941-03-06

Spillway and drum gate construction--drum gate #1 [01]

Drum gate number one

1940-12-07

Installation of turbines and generators--concrete breaker

Concrete breaker used to tighten bolts on L-6 scroll case

1943-05-26

Equipment for construction, transportation, and maintenance--truck-mounted equipment

A centrifugal oil purifier, a filter, and automatic electric heater, and meter, pumps, gauges, pipes, and necessary appurtenances are mounted on a simple truck for use in various parts of the plant. The unit is designed to handle lubricating,...

1941-09-10

Installation of turbines and generators--man wipes wicket gates [01]

Wicket gates for L-8 turbine resting on generator deck. Mr. H.R. Ramm, U.S.B.R. cleaning and inspecting shafts

1947-06-28

Site preparation-- men install piping

Men install piping during early phase of construction.

1936-11-09

Powerhouse construction--powerhouse and transformer deck

View of East Powerhouse and transformer deck with outlet tubes in background.

1942-04-28

Construction of pipelines, syphons and tunnels--main canal headworks

South Coulee Dam--Main Canal Headworks--View over top of barrel section taken from east upstream and west. The ladder-like templates in the middle left of the view support reinforcing steel in the hinge part of the gate section of the two west...

1948-09-02

Spillway and drum gate construction--east spillway

East spillway, showing elevator shaft.

1941-06-30

Spillway and drum gate construction--view of the spillway section [05]

View of the spillway section from the left bank

1941-03-03

Spillway and drum gate construction--drum gate #1 [03]

Drum gate number one

1940-12-05

Spillway and drum gate construction--transition form for inlet

Transition form for inlet to 57-inch supply pipe for drum gate control. One of these water supply inlets is in each pier for a total of 11. A 57"" butterfly valve will be connected to this inlet for control of water supply.

1940-06-12

Installation of turbines and generators--lowering the needle valve

Needle valve being lowered to base in R-8 of East Powerhouse

1944-11-24