A generalized kinematic catchment model

The model requires the division of the catchment into a (branched) network of subcatchments or reservoirs. Rainfall on these elements of the model is distributed to a surface or a groundwater storage which, in turn, at differing rates, provides inflow into the channel network. The flows in the channels are simulated by a kinematic wave equation which is solved using an implicit finite difference scheme. Typical parameter estimates for catchments of varying sizes are presented. The model is considered to have particular potential for flood forecasting as well as being a useful adjunct to design.