Main Article Content

Abstract

Discharge rating curve is a curve that shows the relationship between water level and river flow so that it can be used to predict the amount of discharge in the river. The purpose of this research was to find the equation of the discharge rating curve in the Deli watershed. This research was carried out by analyzing river water discharge and taking water level data using a water level logger with a minimum of twice a week. River water discharge at the study location has a varied value i.e 0,74 – 3,28 m3/sec with an average of 1,06 m3/sec. The determination of the equation of the discharge rating curve uses several methods namely linear, polynomial, power function, logarithmic, and exponential. The results of the study show that the equation with the second order polynomial method has the best level of correlation (r) and RMSE with value r 0.986 and RMSE 0.011. The rating curve equation obtained was Q = 18,97 (h)2 – 1,372(h) + 0.190.

Keywords

watershed discharge rating curve water level

Article Details

Author Biography

Edi Susanto, Universitas Sumatera Utara

Program Studi Keteknikan Pertanian

References

  1. Badan Pusat Statistik. (2016). Produksi Tanaman Perkebunan menurut Kabupaten/Kota dan Jenis Tanaman di Provinsi Jawa Timur, 2016 (Ton). Diakses dari https://jatim.bps.go.id/statictable/ 2017/06/19/570/produksi-tanaman-perkebunan-menurut-kabupaten-kota- dan-jenis-tanaman-di-provinsi-jawa-timur-ton-2016.html
  2. Budijanto, S., Hasbullah R., Prabawati, S., Setyadjit, Sukarno, & Zuraida, I. (2008). Identifikasi dan Uji Keamanan Asap Cair Tempurung Kelapa untuk Produk Pangan. J. Pascapanen, 5 (1), 32-40.
  3. Ditjenbun. (2017). Statistik Perkebunan Indonesia 2015-2017 Kelapa. Available at http://ditjenbun.pertanian.go.id/tinymcpuk/gambar/file/statistik/2017/Kelapa-2015-2017.pdf
  4. Fauzan & Ikhwanus, M. (2017). Pemurnian Asap Cair Tempurung Kelapa Melalui Distilasi dan Filtrasi Menggunakan Zeolit dan Arang Aktif. Prosiding Semnastek: Fakultas Teknik Universitas Muhammadiyah Jakarta, 1-5.
  5. Kailaku, S.I., Syakir, M., Mulyawanti, I., & Syah, A. (2017). Antimicrobial Activity of Coconut Shell Liquid Smoke. IOP Conf. Ser.: Mater. Sci. Eng. 206. doi:10.1088/1757-899X/206/1/012050
  6. Pranata, J. (2007). Pemanfaatan Sabut dan Tempurung Kelapa serta Cangkang Sawit untuk Pembuatan Asap Cair sebagai Pengawet Makanan Alami. Skripsi. Teknik Kimia Universitas Malikussaleh. Lhoksumawe.
  7. Sakin A., Karagoz, I., Ergul, M., Demirtas, U., & Savas, F.H. (2017). An investigation into the use of a cyclone separator in the intake air system and its influence on the engine performance. Proceedings the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, Vol. 232 (5): 667-678.
  8. Zuraida, I., Sukarno, Budijanto, S. (2011). Antibacterial Activity of Coconut Shell Liquid Smoke (CS-LS) and its Application on Fish Ball Preservation. International Food Research Journal, Vol. 1 (18): 405-410.