The meandering is considered morphometrically on some rivers in Hokkaido. Fig. 2A shows the inclination and the river width of free meandcr, which stand in the relation of hyperbola as Prof. G. Imamura said on the inclination and the width of meanderbelt. In Fig. 2A the depth of river is not considered, but as the depth increases, the inclination of river becomes gentle. Figt. 2B and 2C represent the meanderindex:
Stream-distance-Axial-distance/Axial-distance×100
and the wavelength of meander. (Distance ac in Fig. 1).
According to Fig. 2C we find that the river winds with a certain wavelngth and the width of meanderbelt is nearly half of the wavelength.
