**1. Introduction**

Internal sedimentary bed forms such as dunes and ripples, which are believed to be truncated in the preserved geologic record, can now have their full heights estimated from cross bedding-sets and cosets within quantitative uncertainty and order of magnitude [1–4]. Recent researches provide a methodology to evaluate paleo dimensions and flow dynamics of ancient fluvial systems [5–7]. Fluvial paleo-channels can be scaled from numerical equations based on grain size along with channel depth and width measurements and augmented by flow depth estimated from estimated dune bed form height from cross bedding set thickness using data of cross bedding set thickness [2, 3, 8]. Calculated parameters include mean bed form height, channel depth, channel belt width, channel width, paleoslope, boundary shear stress; Darcy-Weisbach friction factor, paleoflow velocity, and paleo discharge provide insight into basin analysis.

An attempt is made to scale the paleo-dimensions and flow dynamics of fluvial channels of Early Permian Barakar River. These parameters together with sedimentary rock record provide meaningful interpretations of fluvial architecture, the evolution of fluvial style.
