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101 Object thumbnail
View of Hoover Dam from downstream on the Colorado River View of Hoover Dam from downstream on the Colorado River. The Nevada and central power houses are seen at the base of the dam face. Water is discharged from the outlet works of the Arizona valve house on the right....
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Hoover Dam from the downstream side View of face of dam showing water coming out of the outlet works on the Arizona side. A bridge, a cableway above the dam, the mouths of several diversion tunnels, the Nevada power house, and construction equipment are visible. The...
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Hoover Dam from downstream side Shows the face of the dam with water streaming from the outlet works on both sides. Also shows the central power house, the mouth of a diversion tunnel on the Nevada side, and Fortification Hill in the background.
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Aerial view of Hoover Dam Aerial view of Hoover Dam showing water spewing from the outlet works in the valve houses on both sides of the dam. The reservoir (Lake Mead) is beginning to fill above the dam. The Arizona and the central power houses...
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Outlet works -- Hoover Dam Close-up view of the outlet works spewing water at the dam. Appears to have been taken at dusk. The entrances to two of the diversion tunnels are visible.
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Aerial view of Hoover Dam Aerial view of Hoover Dam and the surrounding area. The outlet works are open, spewing water. The portals to three of the diversion tunnels are visible. The tops of the intake towers, the central power house, and...
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Aerial view of Hoover Dam Aerial view of Hoover Dam and the surrounding area. Part of the Colorado River, Lake Mead, and Fortification Hill are visible. The outlet works are open, spewing water. Several of the portals of the diversion tunnels can...
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Construction of Hoover Dam View of Hoover Dam under construction. A portal to a diversion tunnel is visible at lower left. The power houses can be seen as well as several buildings in the lower right of the photo on the cofferdam.
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Looking upstream at the upper end of no. 1 plug, showing forms for the intake... Rebar inside a diversion tunnel under construction. A blurry image of two construction workers is at the top of the picture.
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Looking upstream into no. 1 plug, showing the placing of the high pressure valves and... Placing of the high pressure valves in one of the diversion tunnels. There are two construction workers in the picture, and the tunnel is illuminated with electric lights.
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Agitators dumping concrete into buckets Construction workers are operating machinery (agitators) which dump concrete into buckets. Location is the interior of a diversion tunnel at the Hoover Dam construction site.
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Upstream face of Hoover Dam, and the Nevada intake towers Shows construction on the two Nevada intake towers. Also shows part of the upstream face of Hoover Dam with construction going on on the top of the dam. A cableway, construction equipment such as derrick cranes, and tunnel...
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Hoover Dam Expansive view of Hoover Dam showing the power houses, the waters of the Colorado River below the power houses, two of the portals to the diversion tunnels, transmission towers on the cliffs above, and a cable across the top...
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Dowstream face -- Hoover Dam Photo taken from quite a distance down Black Canyon, showing the downstream face of the dam, the power houses, the Colorado River, and one of the portals of the diversion tunnels.
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Hoover Dam and surrounding area This is a re-touched photo of Hoover Dam and the surrounding area. The Colorado River can be seen below the power houses. The intake towers are visible behind the downstream face. The reservoir (Lake Mead) can be...
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Construction -- Hoover Dam View of the construction of Hoover Dam showing the upstream face, the power houses, and some of the portals to the diversion tunnels. Part of the Colorado River is visible.
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Hoover Dam construction View from a distance of Hoover Dam and the canyon. The upstream face, the power houses, and one of the portals to the diversion tunnels can be seen. There are buildings on the cofferdam and part of the...
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Blasting at Hoover Dam site View of construction in Black Canyon at the Hoover Dam site. Construction workers are standing by the railroad tracks looking at a dynamite blast that is taking place in the distance. The Colorado River is visible as...
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Inside a diversion tunnel -- Hoover Dam construction Shows a construction worker and power shovel inside a diversion tunnel at the Hoover Dam construction site.
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Construction in diversion tunnel -- Hoover Dam View of the drilling jumbo working in one of the diversion tunnels during the construction of Hoover Dam.
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Construction of diversion tunnel at Hoover Dam Shows a drilling jumbo and other construction vehicles inside a diversion tunnel during the construction of Hoover Dam.
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Construction workers in diversion tunnel, Hoover Dam site Shows construction workers posing on the drilling jumbo inside a diversion tunnel during the construction of Hoover Dam. Other men are standing on the floor of the tunnel looking up at the jumbo. Electric lights illuminate the tunnel.
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Diversion tunnel under construction at Hoover Dam site View of the interior of one of the diversion tunnels during construction at Hoover Dam. Electric lights illuminate the scene.
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Construction of Hoover Dam diversion tunnel View looking upstream through diversion tunnel no. 2 at intersection with inclined tunnel from upstream Nevada intake tower (inscription on back of photo). Shows concrete pouring forms and one construction worker standing looking up the tunnel at bottom...
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Construction -- Hoover Dam -- Diversion tunnel Shows the construction of one of the diversion tunnels at Hoover Dam.
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Construction of Hoover Dam diversion tunnel Shows a dump truck and construction workers framed at the mouth of a diversion tunnel during the construction of Hoover Dam.
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Construction of Hoover Dam diversion tunnel and portal "View of upper portals tunnel #1. showing R.R. trestle and gate works." (inscription on back of photo) Concrete pouring forms are visible in the diversion tunnel.
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Construction of Hoover Dam Shows a truck and wood forms inside a diversion tunnel during the construction of Hoover Dam.
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Construction workers inside Hoover Dam diversion tunnel Shows a power shovel dumping concrete into a dump truck inside a diversion tunnel during the construction of Hoover Dam. Construction workers are visible at work.
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Portals, Hoover Dam construction "Shows men placing dynamite to flood entrance blocks away from #3 and #4 Arizona side."(inscription on back of photo) The portals to the diversion tunnels are visible. The Colorado River is shown below the portals and buildings and trucks...
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Preliminary construction at Hoover Dam site "Down-stream from Observation Point -- note tunnel in center of picture. Trucks hauling muck from Nevada portals must go through this tunnel to dumping grounds one mile away. [150 feet to river straight down]"-- [hand-written inscription on back...
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Hoover Dam construction "Upstream toward lower portals." [hand-written inscription on back of photo] This view shows the Colorado River in Black Canyon during the early stages of the construction of Hoover Dam. A suspension bridge across the river can be...
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Hoover Dam construction -- various phases This postcard shows the construction of Hoover Dam in four different stages. All views were taken from the same point looking upstream. The first image shows Black Canyon and the Colorado River at the very beginning of construction...
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Construction of Hoover Dam "First load of muck used in coffer dam [sic]. Looking at Arizona portals #3 & #4. Water now flowing thru these." (hand-written inscription on back of photo) Shows a dump truck dumping the muck and construction...
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Diversion tunnel -- Hoover Dam Shows a man standing inside a diversion tunnel at the Hoover Dam site.
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Construction -- Hoover Dam Handwritten inscription on back of photo: "Rex motor mixer that has been picked off a white truck and being swung into position at tunnel #1 with load of cement." Shows hoisting machinery, railroad tracks, a steam locomotive, a...
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Hoover Dam construction Panoramic view of the Hoover Dam construction site. One of the lower portals to a division tunnel can be seen. Buildings, trucks, and the cofferdam are also visible. A portion of the Colorado River is...
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Hoover Dam construction Shows one of the portals to the diversion tunnels. A portion of the Colorado River is visible as well as construction workers and construction buildings.
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Hoover Dam construction Handwritten inscription on back of photo: "Looking upstream into Black Canyon toward Boulder damsite after river had been diverted thru diversion tunnels Nos. 3 and 4. Temporary back-wash dike seen immediately upstream from tunnel out..." Portals to...
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Aerial view of Hoover Dam and surrounding area Aerial view of the completed dam showing the downstream face and powerhouses. Lake Mead (reservoir) can be seen as it fills behind the dam. Water is spilling from the outlet works and one of the lower portals to...
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Aerial view of Hoover Dam and surrounding area Aerial view of Hoover Dam showing the upstream face, the power houses, one of the portals to a diversion tunnel, and the intake towers. Lake Mead (the reservoir) is filling and a portion of the Colorado River is also...
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Hoover Dam construction Panoramic view of Black Canyon and Hoover Dam under construction. Two of the portals to the diversion tunnels are visible. The face of the dam is nearing completion and the concrete pouring forms can be seen. Part...
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Aerial view -- Hoover Dam construction Aerial view of Hoover Dam, Black Canyon, and the Colordo River during the construction of the dam. Two portals of the diversion tunnels are visible. There are trucks and buildings on the cofferdam. The face of the...
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View showing method of finishing slabs in invert lining. Construction workers are operating machinery to finish slabs in the invert lining of a diversion tunnel at the Hoover Dam site.
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Hoover Dam -- retouched photo Panoramic view of Hoover Dam and area including Fortifiction Hill in background. The photo was taken looking towards the downstream face and shows the power houses, some of the portals to the diversion tunnels, the Colorado River, and Lake...
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Hoover Dam -- retouched photo View of Hoover Dam and surrounding area with Fortification Hill in the background. This is a postcard with the following printed on the front: "This is an actual photo of the retouched photograph from which engraving for the...
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Trucks hauling concrete in the diversion tunnel This photo shows trucks and equipment used for hauling and pouring concrete to form the invert lining in a diversion tunnel at Hoover Dam. Also shows some construction workers.
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Aerial view of Hoover Dam Aerial view of the completed Hoover Dam and the surrounding area showing the Colorado River below the dam and Lake Mead (the reservoir) above the dam. Water is flowing from the outlet works, and some of the portals to...
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Boulder Canyon dam : the essence of the Swing-Johnson Bill ; Boulder Dam : from... Discussion of the proposals in Congress to create Boulder (Hoover) Dam. Includes maps and illustrations.
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Colorado River problem Discusses possible uses of the Colorado River for water supply, irrigation, and power. Also discusses flood control on the Colorado. Recommends a comprehensive plan for development. Reprinted from Transactions, American Society of Civil Engineers, v. 88. "Presented at the...
 

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