Water flow measurements in Turkey's rivers and evaluation of alternative methods

Year 2013, Volume: 17 Issue: 3, 477 - 481, 01.06.2013

Ramazan Meral Ahmet Benli

Abstract

The accuracy and sustainability in the flow measurement of rivers has a great importance for the water management, planning of water storage structures and prediction of floods. Flow measurements include some difficulty due to the variability of many hydrologic factors. Current rivers flow measurement in Turkey is generally based on the use of limnograph and discharge rating curve and, advances has mostly been made the improvement of reading of limnograph. In this study, at the stage of the discharge measurement, giving priority to the improvement in the measurements of flow velocity and cross-section has been emphasized. Then, while obtaining discharge rating curve, it was expressed that not only the depth of water but also flow velocity values have to be taken into account for the preparing and using the discharge rating curve. A field study conducted by the acoustic method sampled for the assessments that were made. From findings, It was concluded that the use of flow velocity values for the discharge rating curve gives better estimate results.

Keywords

Flow, discharge rating curve, flow meter, acoustic

Türkiye akarsuları akım ölçümlerinde mevcut durum ve alternatif yöntemlerin değerlendirilmesi

Abstract

The accuracy and sustainability in the flow measurement of rivers has a great importance for the water management, planning of water storage structures and prediction of floods. Flow measurements include some difficulty due to the variability of many hydrologic factors. Current rivers flow measurement in Turkey is generally based on the use of limnograph and discharge rating curve and, advances has mostly been made the improvement of reading of limnograph. In this study, at the stage of the discharge measurement, giving priority to the improvement in the measurements of flow velocity and cross-section has been emphasized. Then, while obtaining discharge rating curve, it was expressed that not only the depth of water but also flow velocity values have to be taken into account for the preparing and using the discharge rating curve. A field study conducted by the acoustic method sampled for the assessments that were made. From findings, It was concluded that the use of flow velocity values for the discharge rating curve gives better estimate results.

Keywords

Akım, debi anahtar eğrisi, muline, akustik

References

• (REFERENCES) Sen, Z. (2003) Su Bilimi ve yöntemleri, Su Vakfı Yayınları.
• Bayazıt, M. (1998) Hidroloji, İTÜ Matbaası, İstanbul.
• EİE, (2008) Türkiye Akarsularında Su kalitesi Gözlemleri, EİE Genel Müdürlüğü, Ankara.
• Şekil 1. Su derinliği ve hızı ile debi değerleri arasındaki ilişkiler ( The relationship between the depth and speed of water and the flow rate ) DSİ, (2012) DSİ web sayfası, http://www.dsi.gov.tr/
• Turan, V. (2003) SKY de EİE Konumu Sorunlar ve Hidrometri Gözlem Ağı ve 3N+1K yaklaşımı, FAO Toprak ve Su kaynakları Mobilizasyonu ve Kullanımı Çalıştayı, Ankara.
• Whalley, N., Iredale, R. S. and Clare, A. F. (2001) ‘Reliability and Uncertainty in Flow Measurement Techniques - Some Current Thinking’, Phys. Chem. Earth , vol. 26, no. 10-12, pp. 743-149.
• De Doncker, L., Troch, P. and Verhoeven, R. (2008) ‘Accuracy of discharge measurements in a vegetated river’, Flow Measurement and Instrumentation, vol. 19, pp. 29–40.
• Duvert, C. and Gratiot, N. (2010) Construction of the stage-discharge rating curve and the SSCturbidity calibration curve in San Antonio Coapa (2009) hydrological season, Institu de recherche pour le development [September 2010].
• Choo,T. H., Park, S. K., Jin Lee, S. and Su Oh , R. (2011) ‘Estimation of river discharge using mean velocity equation’, KSCE Journal of Civil Engineering, vol. 15, no. 5, pp. 927-938.
• Corato, G., Moramarco, T. and Tucciarelli, T. (2011) ‘Discharge estimation combining flow routing and occasional measurements of velocity’, Hydrol. Earth Syst. Sci., vol.15, pp. 2979–2994.
• Chanson, H., Trevethan, M. and Aoki, S. ( 2008) ‘Acoustic Doppler velocimetry (ADV) in small estuary: Field experience and signal postprocessing’, Flow Measurement and Instrumentation, vol. 19, no. 5, pp. 307-313.
• Kostaschuk, R., Best, J., Villard, P., Peakall, J. and Franklin, M. (2005) ‘Measuring flow velocity and sediment transport with an acoustic Doppler current profiler’, Geomorphology , vol. 68, pp. 25–
• Takeda, Y. (2002) Ultrasonic Doppler method for flow measurement. In: International symposium on advanced fluid information. pp. 69–76.
• Yau Lu, J., Chiang Su, C. and Yi Wang, C. (2006) ‘Application of a portable measuring system with acoustic Doppler current profiler to discharge observations in steep rivers’, Flow Measurement and Instrumentation, 17, pp.179–192.
• Voulgaris, G. and Trowbridge, J.H. (1998) ‘Evaluation of the acoustic doppler velocimeter (ADV) for turbulence measurements’, Journal of Atmospheric and Oceanic Technology; 15:272–
• Mueller, D.S. (2002) Use of acoustic Doppler instruments for measuring discharge in streams with appreciable sediment transport, in: Proceedings of Hydraulic Measurements and Experimental Measurements, American Society of Civil Engineers.
• SonTek/YSI Inc, (2007) FlowTracker, Handheld ADV, Technical manual. SonTek/YSI Inc, USA. Meral, R. (2010). Farklı Sediment Materyali ve Su Ortamı Koşullarında Süspanse Sediment Taşınımının Geleneksel ve Akustik Yöntemlerle Ölçümü ve Değerlendirilmesi. Proje No: 107O432, TUBİTAK
• Sahoo,G.B. and Ray, C. (2006) ‘Flow forecasting for a Hawaii stream using rating curves and neural Networks’, Journal of Hydrology, vol. 317, no.12 , pp. 63–80.