This paper explores the role of riffle-pool bedforms in functional eco-hydraulic river rehabilitation designs and addresses the need for quantitative means of generalizing flow behaviour. Riffle hydraulic performance is modelled using a cross-sectionally disaggregated form of broad crested weir equation. For a given channel reach, geostatistical analysis of mapped flow velocity at contrasting flow stages is then used to identify coherent flow behaviour which might be related to channel bedform morphology and hydraulic function. Finally, observed and inferred flow characteristics are reviewed against the data requirements of habitat simulation models and with respect to the application flow simulation modelling. By coupling morphology, flow characterization and habitat modelling, the aim is to provide a simple, but scientifically sound approach for assessing the ecohydraulic performance of channel bedforms to improve both project design and post-project audit of rehabilitation schemes.