Morphometry of Desert Wadi Drainage on the West Bank between Danffq and Dallas, Luxor-Qena Region, Egypt.

Abstract

Quantitative measurements of lineation and morphometric analyses of 24 wadi drainage basins on the west bank of the Nile between Danfiq and Ballas. Luxor-Oena region, reveal that (1) the drainage lines are mainly perpendicular to the course of the Nile and some variations in azimuth directions reflect adjustments to changes in the course of the Nile, (2) the relationship of stream length and stream numbers to stream order follows Horton's law, (3) the bifurcation ratio is 3.§2 and compares favourably with values of 3.8 and 3.78 from drainage basins east of Cairo, (4) the relationship between stream length (L) and stream area (A) is L = 3.87A07'' suggesting that basins tend to become elongated as they grow in area, (5) the average density is 1.85 ± 0.72 and compares favourably with low drainage density from other wash basins in Egypt; it is likely that the wadis were developed under an arid climate. (6) structural control was detected as a factor responsible for ntra-regional differences in drainage density and stream frequency, and (7) the relative frequency data suggest that the drainage systems have reached a stage of steady state equilibrium.