A technical reference guide and instruction text for the estimation of flood and drainage water levels in rivers‎,‎ waterways and drainage channels‎.‎ It is written as a user‎'‎s manual for the openly available innovative Conveyance and Afflux Estimation System ‎(‎CES‎-AES‎)‎ software‎,‎ with which water levels‎,‎ flows and velocities in channels can be calculated‎.‎ The impact of factors influencing these levels and the sensitivity of channels to extreme levels can also be assessed‎.‎ Approaches and solutions are focused on addressing environmental‎,‎ flood risk and land drainage objectives‎.‎ Practical Channel Hydraulics is the first reference guide that focuses in detail on estimating roughness‎,‎ conveyance and afflux in fluvial hydraulics‎.‎ With its universal approach and the application of metric units‎,‎ both book and software serve an international audience of consultants and engineers dealing with river modelling‎,‎ flood risk assessment‎,‎ maintenance of watercourses and the design of drainage systems‎.‎Suited as course material for training graduate Master‎'‎s students in civil and environmental engineering or geomorphology who focus on river and flood engineering‎,‎ as well as for professional training in flood risk management issues‎,‎ open channel flow hydraulics and modelling‎.‎ The CES‎-AES software development followed recommendations by practitioners and academics in the UK Network on Conveyance in River Flood Plain Systems‎,‎ following the Autumn 2000 floods‎,‎ that operating authorities should make better use of recent improved knowledge on conveyance and related flood ‎(‎or drainage‎)‎ level estimation‎.‎ This led to a Targeted Programme of Research aimed at improving conveyance estimation and subsequent integration with other research on afflux at bridges and culverts at high flows‎.‎ The CES‎-AES software tool aims to improve and assist with the estimation of‎:‎ * hydraulic roughness * water levels ‎(‎and corresponding channel and structure conveyance‎)‎ * flow ‎(‎given slope‎)‎‎;‎ section‎-average and spatial velocities * backwater profiles upstream of a known flow‎-head control e‎.‎g‎.‎ weir ‎(‎steady‎)‎ * afflux upstream of bridges and culverts * uncertainty in water level The CES‎-AES software and tutorial are openly available at www‎.‎river‎-conveyance‎.‎net ‎(‎see also Downloads & Updates tab‎)‎‎.‎