Browse Items (1410 total)

Second panoramic view of canyon showing earth fill conveyor. Gallery Tunnel, lower cutoff wall, pump sump and contact of earth fill and gravel section of dam

Panoramic view of canyon showing earth fill conveyor, Gallery Tunnel, lower cutoff wall, pump sump and contact of earth fill and gravel section of dam

View showing Gallery Tunnel in various phases of construction. Lower part or section is first completed before upper section can be made.

Downstream side of dam after concrete has been poured. Forms are being removed and lower part of wall has already received its coat of of coal tar paint for protection against the elements and for water proofing.

General views of dam taken from upper coffer dam. Lower, intermediate, and upper cutoff walls show various phases of construction.

Construction view of lower and cutoff wall; taken from downstream side of dam. In lower part of picture forms for Gallery are being completed.

This view taken from upstream side of dam showing pump sump and peculiar pocket formation of bedrock.

This view taken from downstream side of dam shows reinforcement steel being placed in upper cutoff wall.

View taken from south side of canyon showing final cleanup work prepratory to placing earth fill. View also shows upper and intermediate cutoff walls, and in lower right hand corner you can see the placing of the earth fill

View showing a construction phase in building the upper cutoff wall on the North side of canyon. Note the reinforcement that goes into each cutoff wall