"2649 View of the Nevada Intake Towers, taken from the Arizona side. April 28th, 1934.
2648 View taken from Himix trestle, showing the Arizona Intake Towers, and Arizona Spillway in background. April 27th, 1934.
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"2918 Upper portal trashrack for Diversion Tunnel No. 1, on the Nevada side. October 30th, 1934.
2916 Looking upstream in No. 2 Diversion Tunnel, showing the concrete pipe line from the pumpcrete gun to the
upstream plug. October 30th,...
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"2400 Nevada Spillway Weir. October 30th, 1933.
2412 Nevada Intake Towers. October 31st, 1933.
2410 Arizona Intake Towers and Spillway. October 31st, 1933."
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In 1931, Utah joined Six Companies Inc. to raise the surety required to bid for the Boulder (Hoover) Dam contract. One of the world’s largest dams, Hoover Dam was completed in 1936 at a cost of $49 million. These scrapbooks document through...
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3233 View from the top of Boulder Dam, looking down on the Power House Structure. April 25th, 1935.
3226 From the top of Boulder Dam, looking upstream into the reservoir. Note the upper portal steel bridge is covered and little remains of Nos....
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"2963 No. 5 Intake Tower finished to Elevation 1232, showing curtain wall. December 5th, 1934
2980 Looking upstream at the upper end of No. 1 Plug, showing forms for the Intake Transition. December 19th, 1934.
3009 Telephoto looking...
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"2727 Downstream face of Boulder Dam, taken from Lookout Point. June 16th, 1934.
2743 Looking down the transition into No. 4 Raise. June 21st, 1934.
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"3042 Telephoto view, looking downstream into the Arizona Spillway, showing the bridge under construction.
January 28th, 1935
3044 Looking downstream into the Nevada Spillway. January 29th, 1935.
3020 Arizona Valve House, from the Government...
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"3401 Boulder Dam and Intake Towers, from the Arizona side. August 26th, 1935.
3391 Looking upstream toward Boulder Lake, from Observation Point. August 21st, 1935.
3408 Looking upstream toward the Nevada Spillway drainage flume and...
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"2720 Form work in Units 8 and 9, Arizona Power House. June 14th, 1934.
2730 Night photograph of Power House construction. June 19th, 1934.
2733 Nevada Power House layout. June 21st, 1934.
2732 Arizona Power House layout. June...
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"3324 Looking upstream at Boulder Dam and the Power House, from the lower portals road. June 24th, 1935.
3340 Looking downstream from the top of Boulder Dam. Note the Valve Houses in the backgrund. June 25th, 1935.
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"3224 Boulder Dam, looking upstream from the lower portals road. The lower coffer¬dam excavation has nearly been completed. Power House structures and Arizona Valve House shown. April 25th, 1935.
3220 Looking downstream at Boulder Dam, from...
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"2228 Looking upstream at the Nevada Spillway. June 2nd, 1933.
2227 Looking upstream at the Arizona Spillway. June 2nd, 1933.
2236 Dumping first grout into Block J-3, Hoover Dam. June 6th, 1933"
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"2286 Hoover Dam July 26th, 1933.
2277 Looking upstream at the Arizona Spillway July 22nd, 1933.
2278 Looking upstream at the Nevada Spillway July 22nd, 1933."
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"1816 - 1817 Panoramic view of the Upstream Cofferdam, taken looking downstream. December 20th, 1932.
1834 - 183 5 Panoramic picture, looking downstream, showing Upstream Cofferdam. December 20th, 1932."
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"1500 Enlarged sections of the Diversion Tunnels, which are later filled with Concrete Plugs, are lined with concrete, and at the same time made to conform to an exact 50-foot circular section, by means of temporary wooden panel forms, which...
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"1304 Cloudburst in the water-shed of Las Vegas Wash assumed such proportions as to wash out a section of the railroad fill. July 12th, 1932.
1306 Twelve hours later the stream-bed is perfectly dry, but the force of the flood is graphically...
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"1349 The highway which will cross the dam, under construction. Lookout Point is shown in the center of the picture. Method of riprapping fill shown in foreground. July 18, 1932
1300 Looking downstream from Lookout Point at the highway under...
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"1343 Caterpillar tractors with bull-dozer attachment building road near Lookout Point to site of cableway bench.
July 18th, 1932.
1344 Construction of the bench for traveling cableway tower necessitates the demolition of Lookout Point, the...
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Analysis of historical nutrient data for Lake Mead indicates that the fertility of the reservoir has decreased which may be the cause for a corresponding decline in the largemouth bass population. However, it appears that fertility can be...
1979-01-01
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The response to periodic desiccation of periphyton communities developed in eddy environments or in areas exposed to variable, direct current was examined. Algal communities were incubated on clay tiles for between 2 and 12 weeks in the Colorado...
1984-12-01
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A pamphlet printed June 19, 1931 for use at exhibits, meetings, and general distribution regarding the Colorado River Aqueduct and the Boulder Canyon Dam.
1931-06-19
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Newspaper clipping of article quoting the entire text of an editorial published in the Washington Times regarding the debate around the All American Canal and the Kettner Bill. The quoted editorial article supports the All American Canal and the...
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Scale [ca. 1:221,760. 1 in. to approx. 3.5 miles] ; 1 map : col. ; 51 x 62 cm ; Relief shown by contours and spot heights ; "Prepared in Washington Office from compilation made in Las Vegas Office." ; "Map no. 24000." ; Includes township and range...
2024-04-17
2024-04-17 |