Dive Aggregate Piles (Gravel Screening Plant), Lake Mead, Nevada

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A dive that takes you to the heart of the history of Lake Mead, this is the Gravel Screening Plant used in the building of Hoover Dam. River rock was extracted from dry beds over on the Arizona side of the river, transported by rail to this area, sorted into 4 different piles based on size, washed with water that was de-silted in the Water Clarifier "batch plant," and then transported again by rail to the dam site, where it was mixed with cement and poured. These piles are huge! You just can’t get a feel for their size until you drop down on them. Location: Dive site located on the Northwest side of Boulder Islands. Buoy lines with floats (assuming park service or boaters have not cut them) are set in 20 feet of water on piles # 1 and # 4. Use some sort of “cheat stick” to grab the tie-up line under the water, or just free-dive down to tie up your boat. Lots of boat traffic in the summer, so beware. Depth: 120 ft to bottom of buoy lines (depending on Lake elevations, this site may be shallower or deeper). TIPS: Pile # 1 buoy: From your anchor line drop down to a depth of 120ft. The anchor line leads to the start of a tunnel. DO NOT ENTER THIS TUNNEL! There is a block in the back and it is the only one that does not go through. String line leads you south towards Piles # 2 and # 4. String also leads west towards other items at the site. Pile # 4 buoy: From your anchor line, drop down to a depth of 120 ft. The anchor line leads to the start of a tunnel. This tunnel is one of the easiest to swim through (fewest obstructions). String leads north towards piles (# 3 and # 1). String also leads west towards other items at the site.

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