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Relation of morphometric parameters and river flow

The functional relationships among various network characteristics, including the relationships between discharge on the one hand and drainage area, channel width, and length of main stem on the other, encourage the continued exploration of streamflow in relation to basin geometry. Attention has concentrated especially on peak flows, the forecasting of which is of practical importance; and since many basins are gaged either poorly or not at all, it would be advantageous to devise means of prediction that, while independent of gaging records, are yet accurate enough to be useful.
https://www.britannica.com/science/river/Morphometry-of-drai...