Proceedings of Annual International Conference Syiah Kuala University - Life Sciences & Engineering Chapter
Vol 3, No 2 (2013): Engineering

Correlation of streamflow and sediment concentration at upstream and downstream Padang Watershed

Kemala Sari Lubis (Department Agroecotechnology University of North Sumatera)
Erwin Masrul Harahap (Unknown)
Abdul Rauf (Unknown)
Zainal Arifin Hasibuan (Department Information Technology University of Indonesia, Jakarta)



Article Info

Publish Date
15 Dec 2013

Abstract

Sediment concentration affected b streamflow at river body. This research was conducted to study correlation between streamflow and sediment concentration at upstream and downstream Padang watershed on July until December 2013. The research was conducted by using survey method at two outlet of Padang watershed were Padang sub watershed and Padang Hilir sub watershed. Sampling of water at two (2) outlets were conducted at stream surface by using depth intergrating suspended sediment sampler technique at three (3) points of river body. Sampling waters conducted at two times that were after rainand no rain. Sediment concentration (Cs) calculated by Cs = (G2 – G1) / V equation. Streamflow (Q) calculated by multiplying velocity and wide of river by Q = A x V equation. The results showed that no correlation between streamflow and sediment concentration at upstream when no rain (Cs = 0,0007 +0,0412 Q; R2 = 0,43) and at downstream when no rain (Cs = 0,0002 Q + 0,07157; R2 = 0,057). There were correlation between streamflow and sediment concentration at upstream after rain (Cs = 0,00041 Q +0,0611; R2 = 0,88) and at downstream after rain (Cs = 0,00015 Q + 0,03293; R2 = 0,9).

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