Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems

Béré Benjamin Bantchina; Kemal Sulhi Gündoğdu

Research Article

Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems

Year 2021, Volume: 15 Issue: 45, 27 - 34, 22.10.2022

Béré Benjamin Bantchina Kemal Sulhi Gündoğdu

Abstract

Precipitations and discharges are keys data in river watershed studies. In Nilüfer Dam Watershed, the flow values are measured every hour, whereas the cumulative rainfall values are recorded daily by the Public Water Management Department (DSİ). This study aimed to determine the characteristics of Nilüfer Dam Watershed and Synthetic Unit Hydrographs using Geographical Information Systems. The DSI synthetic method, Mockus method, and Snyder synthetic method were used in this study. For these three methods, the results showed a slightly significant difference between the discharge peaks of the resulting unit hydrographs. The highest discharge peak was achieved by the DSI Synthetic method (Qp = 4.40 m3/sec/mm) and the smallest by the Mockus method (Qp = 3.75 m3/sec/mm). The Mockus method achieved the longest basin lag time (Tp = 5.95 hours), and the shortest basin lag time was acquired by the Snyder method (Tp = 4.8 hours). This study suggests using synthetic methods for unit hydrographs determination in watersheds where there is no measured data.

Keywords

Geographical information systems, rainfall, synthetic unit hydrograph, watershed

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There are 10 citations in total.

Details

Primary Language	English
Subjects	Agricultural Biotechnology (Other)
Journal Section	Articles
Authors	Béré Benjamin Bantchina Kemal Sulhi Gündoğdu
Publication Date	October 22, 2022
Published in Issue	Year 2021 Volume: 15 Issue: 45

Cite

APA	Bantchina, B. B., & Gündoğdu, K. S. (2022). Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems. Journal of Biological and Environmental Sciences, 15(45), 27-34.
AMA	Bantchina BB, Gündoğdu KS. Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems. JBES. October 2022;15(45):27-34.
Chicago	Bantchina, Béré Benjamin, and Kemal Sulhi Gündoğdu. “Watershed Characteristics and Synthetic Unit Hydrographs Determination Using Geographical Information Systems”. Journal of Biological and Environmental Sciences 15, no. 45 (October 2022): 27-34.
EndNote	Bantchina BB, Gündoğdu KS (October 1, 2022) Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems. Journal of Biological and Environmental Sciences 15 45 27–34.
IEEE	B. B. Bantchina and K. S. Gündoğdu, “Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems”, JBES, vol. 15, no. 45, pp. 27–34, 2022.
ISNAD	Bantchina, Béré Benjamin - Gündoğdu, Kemal Sulhi. “Watershed Characteristics and Synthetic Unit Hydrographs Determination Using Geographical Information Systems”. Journal of Biological and Environmental Sciences 15/45 (October 2022), 27-34.
JAMA	Bantchina BB, Gündoğdu KS. Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems. JBES. 2022;15:27–34.
MLA	Bantchina, Béré Benjamin and Kemal Sulhi Gündoğdu. “Watershed Characteristics and Synthetic Unit Hydrographs Determination Using Geographical Information Systems”. Journal of Biological and Environmental Sciences, vol. 15, no. 45, 2022, pp. 27-34.
Vancouver	Bantchina BB, Gündoğdu KS. Watershed Characteristics and Synthetic Unit Hydrographs Determination using Geographical Information Systems. JBES. 2022;15(45):27-34.