The organization of drainage basins shows some reproducible phenomena. as exemplified by self-similar fractal river network structures and typical scaling laws. and these have been related to energetic optimization principles. such as minimization of stream power. https://www.diegojavierfares.com/hot-savings-Gates-OE-Replacement-Timing-Belt-Fits-1993-1998-Toyota-Supra-2JZ-2JZGE-2JZGTE-mega-choice/