Abstract
Employing the theory of minimum stream power and the principle of maximum entropy as well as field data, this paper develops relationships between the river channel pattern and river functions. It is deduced that the channel pattern with a sinuosity of S=1.4–1.6 and a meander wave length L m≈12 times the channel width is the optimal channel pattern for environmentally sound training and management of alluvial rivers. Taking into account (i) the optimal channel pattern, (ii) the principle of sustainable development of river systems, and (iii) field investigation on river functions and environment, the paper proposes a river management model, which is characterized by (a) a low flow channel with optimal channel pattern, (b) ecotype river banks, (c) riparian forests, (d) embankment dams located at an optimum distance away from river banks, and (e) accessibility to watersides. A river system possessing these characteristics produces maximum societal, economic, and environmental benefits.
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