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A FAST RECURSIVE GIS ALGORITHM FOR COMPUTING STRAHLER STREAM ORDER IN BRAIDED AND NONBRAIDED NETWORKS1
Authors:Alexander Gleyzer  Michael Denisyuk  Alon Rimmer  Yigal Salingar
Abstract:ABSTRACT: Stream ordering is a useful property of every river network, having a wide range of applications. A method for determining stream orders that quickly and easily addresses various network topologies and magnitudes is therefore needed. This paper introduces a general recursive stream ordering framework for vector hydrography. It also presents a linear, O(n), stream ordering procedure for braided river networks, which is a major improvement to the existing quadratic, O(n2), procedure. The discussion includes results and interpretations, and the appendices present procedure pseudocodes and thorough line by line explanations.
Keywords:Strahler stream order  geographic information system  recursive algorithm  software  drainage  braided networks
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