From: "Roger Bettess" To: Cc: Subject: Rivers-List: River engineering problems for the 21st Century Date: 07 November 2000 14:47 First I would like to thank all those people who responded to the earlier list of problems. I notice that not everybody stuck by the rules of no more than 12 problems and that the problems should be in river engineering. Particular thanks must go to Bob Milhous for suggesting problems to drop from the list. On the basis of the comments I have come up with a revised list built on my interpretation of people's comments. If I have ignored your suggestion or modified it beyond all recognition, I apologise and suggest that you try again. The hope is that either people will agree or we can have further rounds of comments. Problems 1 Flow resistance and resistance coefficients for channels of arbitrary shape 2 Representation of turbulence 3 Determination of the discharge coefficient for a structure of arbitrary shape 4 Prediction of the movement of solid particles in turbulent flow Note that this includes both steady and unsteady sediment transport, bed load, suspended load and wash load 5 Prediction of local and general scour 6 Theory or theories for fluvio-morphology This includes both plan form and geometry of stable alluvial channels 7 Analytical solutions to the Navier Stokes equations 8 Suitable strategies for modelling overbank flow in natural rivers with floodplains 9 Development of methods for integrated river basin management Note that this includes but is not limited to floods, water resources, quality and ecology 10 Develop an approach that quantifies the link between the hydraulics and channel morphology of a river and the ecology of the river 11Development of measurement techniques at all spatial and temporal scales, particularly during floods 12 Strategies for raising the awareness of society to the value of river engineers Note this implies that society currently undervalues river engineers, I hope that we don't find that river engineers are currently overvalued. Roger Bettess HR Wallingford "Faxes and emails are used by HR Wallingford as a convenience for confidential, and often legally privileged, business communications both within the firm and with Clients. Disclosure to parties other than addressees through for example forwarding, copying, printing, distribution etc requires HR Wallingford's specific consent. HR Wallingford is not liable for unauthorised disclosures nor for subsequent actions or omissions in reliance upon them. If you have received this message in error please notify us immediately and destroy all copies of it."