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Microseismic monitoring technique for dams and reservoirs
09 June, 2021
Microseismic technology applies high sensitivity geophones to monitor ground motions around them and wave propagation velocity change in the medium. Report by Camilla Tavares Rodrigues, Amanda Queiroz de Paula, Leonardo Santana Dias and Marilene Lopes Araújo of Tetra Tech South America

Tailings dams: the path to zero failure
19 August, 2015
Tailings dams are complex and unforgiving systems which evolve over a period of years. The recent failure of Mount Polley tailings facility in Canada has brought global attention to the fact that the reliability of tailings dams is dependent on consistent and thorough planning, design, monitoring and effective operation at every level. After an independent inquiry into what has been described as Canada’s largest industrial accident of its kind, the industry is being steered on a path towards zero failure. Suzanne Pritchard reports.

Soil Instruments Ltd
26 December, 2012

Lest we forget: learning from international dam incidents
28 October, 2010
The combination of ageing dams, retirement of experienced dam engineers and increased consequences of dam failure due to downstream development underscore the need to better ensure the future safety of dams worldwide. Past experience must not be forgotten and lessons learned must be captured for future generations. The Centre for Energy Advancement through Technological Innovation (CEATI International) is paving the way forward in global communication, coordination and collaboration through their Dam Safety Interest Group (DSIG). A selection of case studies from the organisation’s recent workshop on international dam incidents and failures is presented below

CFRDs in highly seismic regions
14 April, 2010
Until the Wenchuan earthquake of 12 May 2008 no large concrete face rockfill dam (CFRD) was subjected to strong ground shaking. Quite a few dam engineers were of the opinion that CFRDs are inherently safe against earthquakes, because any leakage in the concrete face would not lead to the failure of the dam. Even if such a state could be achieved excessive leakage could not be tolerated and the reservoir would have to be drawn down if severe damage of the concrete face and/or the water proofing system has to be assumed. In this paper the main measures to be considered to achieve a safe CFRD in highly seismic regions are discussed

Uncovering Samanalawewa
01 April, 2010
Kamal Laksiri gave IWP&DC a detailed report on the story behind Sri Lanka’s 100m high Samanalawewa dam

Some new perspectives on climate change: report of a national meeting
15 February, 2010
A joint meeting of the Royal Meteorological Society and British Hydrological Society took place on Saturday 13th February 2010 at the Blackett Lecture Theatre in London, organised by James Dent. Frank Farquharson introduced the meeting saying that it was important for members of both societies to come together and discuss climate change. He pointed out the great variability of temperature, rainfall and riverflow and wondered how the effects of man’s activities could be discerned from past, present, and future observations: it was a challenge for everyone.

Under the influence - 60 most influential people in the industry
06 October, 2009
Welcome to International Water Power & Dam Construction’s list of the 60 most influential people in the industry. These people have helped shape the course of the global hydro and dams business over the last 60 years. This list – in alphabetical order – is the result of nominations from contacts and readers around the world, and was decided by a panel of industry experts

Technical and design innovations in run-of-river projects
17 March, 2009
Since engineering its first hydroelectric scheme in 1926, Knight Piésold has gained considerable experience in the design of power generation facilities. In the 21st century, the company is working with its partners to create a legacy of clean, renewable energy through run-of-river hydro projects

Measuring GHG emissions - the use of eddy covariance techniques
23 September, 2008
Eddy covariance techniques are being used at the Eastmain-1 reservoir in Canada for hydroelectric reservoir CO2 flux measurements. Marie-Claude Bonneville and Dr Ian B Strachan explain how this will help assess the impact of reservoir impoundment on GHG emissions

Seismic performance of CFRDs
28 March, 2007
Martin Wieland and R Peter Brenner present a qualitative assessment of the seismic performance of concrete face rockfill dams under strong ground shaking, and discuss possible problems and deficiencies

Monitoring movements at Toulnustouc
17 May, 2005
Toulnustouc dam and power plant received state-of-art geotechnical instrumentation including submersible tiltmeters for monitoring settlement, writes Gary R Holzhausen and Stéphane-Éric Thivierge

Optical allusions
10 December, 2004
Experiments have been undertaken in Sweden that utilise optical fibre technology to measure the problem of seepage in a series of embankment dams, explain Dan Watley and Sam Johansson

Weighing the ways to fix a dam
25 August, 2004
Robert B Jansen takes a look at the different options available when certain rehabilitation work becomes necessary on dams

Constructing Kannaviou dam
15 July, 2004
Demos Antoniou, Paul Legg and Dimitris Glavas discuss the main issues related to the construction of Kannaviou dam, the first CFRD dam in Cyprus.

Company showcase
25 May, 2004
IWP&DC talked to a few of the companies exhibiting at the British Dam Society’s 13th Biennial conference to discover what they have in store for visitors

A modern addition - uncovering Samanalawewa
04 May, 2004
Kamal Laksiri gives a detailed report on the story behind Sri Lanka’s 100m high Samanalawewa dam

Inside Enciso hydro project
22 April, 2004
Work is underway on a Spanish dam with the aim of meeting water demand in La Rioja

Dam risk and the owner’s dilemma
15 September, 2000
Recent literature on risk analysis for dams suggests that the historic controversies concerning practical quantification of risk have yet to be resolved. Des Hartford takes a look back at why the presently unacceptable situation has arisen, and charts the future path necessary to establish sound risk analysis which can be used confidently in dam safety practice

The key to success
17 July, 2000
Los Vaqueros dam in the US is a key component in a major water project that has improved water quality and addressed environmental concerns. Gil M Lawton reports

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