Underwater Work

Information about work performed under water to maintain dams and hydro facilities, such as dam inspection, dewatering, repairs and routine maintenance.

Underwater Work
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Latest Underwater Work News

Case Studies: Accomplishing Work Under Water


This article features three case studies of work performed under water at dams and hydro facilities in North America. The case studies illustrate challenges faced and lessons learned that other project owners can apply.

MapTech wins contract for dam surveying, mapping work


Water resource management firm MapTech Inc. has won a $10 million contract to perform surveying, mapping and dam deformation studies for the U.S. Army Corps of Engineers in the southern United States and possibly worldwide.

Teledyne BlueView, EIVA release underwater imaging software


Underwater imaging technology manufacturer Teledyne BlueView and engineering company EIVA have released a new scanning system designed to quickly assess underwater surfaces.

Pakistan seeks sediment management strategy for 243-MW Warsak hydro project


Pakistan's Water and Power Development Authority (WAPDA) invites expressions of interest from consultants to help develop a sediment management strategy as part of rehabilitation of the 243-MW Warsak hydroelectric project on Pakistan's Kabul River.

Diver dies at Nova Scotia tidal facility

Diver dies while inspecting Canadian tidal facility


A diver died while inspecting the 20-MW Annapolis Royal tidal barrage owned by Nova Scotia Power Wednesday, according to news reports.

U.S. extends call for fishway temperature improvements at 810-MW Lower Granite Dam


The U.S. Army Corps of Engineers has extended the deadline for bids to build structures to provide fishway temperature improvements at 810-MW Lower Granite Dam on the Snake River in Washington.

U.S. seeks dam safety construction at Addicks, Barker dams in Texas


The U.S. Army Corps of Engineers has scheduled a site visit and a pre-bid conference on proposed dam safety construction at Addicks and Barker dams, which protect the Houston area from flooding. 

Corps awards contract for Great Lakes & Ohio River Division surveying work


The U.S. Army Corps of Engineers has awarded a US$5 million contract to Geo Consultants LLC to perform foundation pressure relief well and geophysical survey services at civil works projects in its Great Lakes and Ohio River Division.

Mosul Dam

U.S. seeks firms for grouting program at Iraq's 750-MW Mosul Dam


The U.S. Army Corps of Engineers seeks information on firms capable of carrying out a 24-hour-a-day grouting program at Iraq's 750-MW Mosul Dam on the Tigris River.

Energy Department prize challenge incentivizes wave energy conversion next generation ideas


In April, the U.S. Department of Energy announced its launch of the Wave Energy Prize competition “as a means to use a prize challenge to help dramatically improve the performance of wave energy conversion (WEC) devices, providing a pathway to game-changing reductions in the cost of wave energy.”  

Technical audit sought for plunge pool rehab at Africa's Kariba Dam


The European Union invites applications for pre-qualification to conduct regular technical audits of dam safety work to reshape the plunge pool of Kariba Dam, site of three hydroelectric projects on the border of Zambia and Zimbabe.

Hydro equipment manufacturer Fisher passes away

Jack W. Fisher, president of underwater equipment manufacturer JW Fishers Mfg., passes away


Jack W. Fisher, president of underwater equipment manufacturer JW Fishers Mfg., passed away on Feb. 20, 2015. He was 73 years old.

Buckeye Lake Dam

Corps releases Buckeye Lake Dam safety report


The U.S. Army Corps of Engineers has identified "serious problems" and a "significant risk to the public" at Ohio's Buckeye Lake Dam, according to a report released this week.

Kyrgyzstan seeks underwater inspection of 1,200-MW Toktogul hydro project


Kyrgyzstan utility Electric Power Plants (EPP) seeks bids to perform underwater inspection services for rehabilitation of the 1,200-MW Toktogul hydroelectric project on Kyrgyzstan's Naryn River.

French hydro utility seeks rehabilitation of Balme de Rencurel Dam


Electricite de France (EDF) seeks bids for reinforcement of Balme de Rencurel Dam in France by grout injections and other civil rehabilitation work.

India state seeks trash rake for 111-MW Sawra Kuddu hydro project


India's Himachal Pradesh Power Corp. Ltd. (HPPC) seeks bids to supply a trashrack cleaning machine for the 111-MW Sawra Kuddu hydroelectric project in Himachal Pradesh State.

French agency seeks bottom outlet refurbishment at 5.9-MW Panneciere hydro project


France's Seine River Basin agency seeks bids to rehabilitate the bottom outlet valve of the 5.9-MW Panneciere hydroelectric project on the Yonne River in France's Nievre Department.

French engineer seeks trashrack, fish passage for 8-MW Pebernat hydro project


Hydropower engineer Hydrostadium seeks bids to supply and install a trashrack and downstream fish passage at the 8-MW Pebernat hydroelectric project on the Ariege River in France's Ariege Department.

Nepal seeks trash rake for rehabilitation of 144-MW Kali Gandaki A hydro project


Nepal Electricity Authority (NEA) seeks bids to supply a trashrack cleaning machine as part of rehabilitation of the 144-MW Kali Gandaki A hydroelectric project on the Kali Gandaki River in western Nepal.

U.S. seeks dam safety geotechnical, drilling work


The U.S. Army Corps of Engineers' Huntington District invites expressions of interest to perform dam safety geotechnical and drilling work at Corps facilities throughout the United States.