Analysis of drainage networks in the Ras Sidr area

1-The total  number of streams in studied basins is about 57692km  first order and second order represent 95 % of the total of streams in the study area The remain of streams are 4.8 %.
2- The total  lengths of streams in studied basins is 16617 km while first and second orders is76% of the total of lengths km The remain of orders are 3.9 % from third and ninth.
3- Bifurcation ratio in studied basins is between 5.1in wadi lahata , 4.9 in wadi Gharndal ,4.3 in wadi Wardan and 3.9 in wadi Sudr.
4- Density in the studied basins is between 5.2 km / km² in wadi Lahata , 5.5 km / km²  in wadi Gharndal and Sudr while density in wadi Wardan is 5.6 km / km²_.
5 -Topographic Texture in wadis are between 6.932 stream / km for wadi  Lahata , 15.712 streams / km for wadi Wardan because several streams orders of wadi Wardan , the mean of Topographic Texture is 11.50 stream / km in studied basins.
6- Frequency in studied basins is between 18.4 stream / km² in wadi Lahata and 19.4 stream / km² in wadi Wardan.
7- It was chosen 10 morphometric  parameters to determine the most waids dangerous  for flash flood  such as Abo ragem for wadi Sudr and wadi Sig for wadi Wardan and wadi Wata tributaires of wadi Gharndal.

8- Wadis orientations are affected by faults directions ( NE- SW, NW-SE ).