AUS Projects

South Fork Intake Bulkhead Installation

By Mark | Oct 19, 2017

The South Fork Reservoir is located outside Elko Nevada. AUS was contracted to install two dewatering bulkheads on the intake structure located in the bottom of the reservoir to allow repairs on the guardian gates. AUS lifted and installed two each 10,000 pound bulkheads at an altitude of 5300 feet and successfully dewatered the intake … Read more

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Argentina Project

By Mark | Aug 24, 2017

Obra-RC005-Lot3 Emisario planta RIachuela Associated Underwater Services under contract to Impregalla Healy provided consulting design and direct supervision of the underwater concrete placement in the four drop shafts required for the implementation of the tunnel machine. Emisario planta RIachuela project came together as AUS assisted in the development of the underwater requirements including safety plan, excavation, … Read more

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Box Canyon Dam

By Mark | Oct 17, 2016

As per of the FERC Relicense Process, Box Canyon Dam, which is located on the Pend Oreille River near Ione, WA is required to provide upstream passage for the Bull Trout, West slope Cutthroat, and the Mountain Whitefish.  Associated Underwater Services is providing the dive support for the project working for the General contractor, J.W. … Read more

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Twin Falls Powerhouse

By Mark | Oct 13, 2016

AUS conducted a survey of the Twin Falls Powerhouse tail race tunnel between August 6 and August 8, 2013. The condition of the tunnel was documented by ROV video and scanning and imaging sonars. The tunnel was found to be in good condition with no significant evidence of sediment accumulation or ceil collapse.

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Ryan Dam

By Mark | Jun 27, 2016

In the winter of 2014, AUS spent 2 1/2 months in Great Falls, MT overhauling the waste gates at Ryan Dam. We removed the gates and gate stems, installed new gate guides and replaced the reworked gates and stems. Utilizing Nitrox breathing mixture throughout the project, we made 194 dives to a depth of 66′. … Read more

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520 Bridge Now Open

By Mark | Apr 18, 2016

After nearly six years of construction, AUS is proud to announce the opening of the new highway 520 floating bridge that helps travelers across Lake Washington. The new route 520 bridge is the world’s longest floating bridge at 7,710 feet long, bringing it 132 feet longer than the old highway 520 bridge. Once the new … Read more

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Spokane River “Barge” Cleanup

By Mark | Sep 27, 2015

The river cleanup was part of a series of events in September designed to help people “fall in love with the Spokane River.” Pictured to the right is Keith Nelson of AUS pulling a bike from the river.   Here’s an article and video from A week in the waters of the Spokane River trolling … Read more

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Northern Water Colorado Water Conservatory

By Mark | Feb 28, 2015

ROV PENETRATION INSPECTIONS Farr Pump Plant, Willow Creek Intake and Grandby Lake Intake Project completed August 2014 Farr plant intake inspection: Required the internal and external inspection of the intake structure utilizing a SEAEYE Falcon ROV. The structure was located in 113 feet of water at an altitude of 8200 feet. A wet diver team was … Read more

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Nine Mile Dam Project

By Mark | Feb 16, 2015

AUS has multiple dive teams working on the nine mile dam project. The underwater work is part of a large refurbishment project for Avista corporation. AUS is performing underwater operations including wall sawing, core drilling, welding, burning, anchor bolt installation steel setting, grouting, bulkhead guides and bulkhead installation and removal. The difficult working conditions require a team effort and … Read more

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