Analysis of trends in streamflow and its linkages with rainfall and anthropogenic factors in Gomti River basin of North India
Trend analysis of hydro-climatic variables such as streamflow, rainfall, and temperature provides useful information for effective water resources planning, designing, and management. Trends in observed streamflow at four gauging stations in the Gomti River basin of North India were assessed using the Mann–Kendall and Sen’s slope for the 1982 to 2012 period. The relationships between trends in streamflow and rainfall were studied by correlation analyses. There was a gradual decreasing trend of annual, monsoonal, and winter seasonal streamflow (p < 0.05) from the midstream to the downstream of the river and also a decreasing trend of annual streamflow for the 5-year moving averaged standardized anomalies of streamflow for the entire basin. The declining trend in the streamflow was attributed partly to the increased water withdrawal, to increased air temperature, to higher population, and partly to significant reducing trend of post monsoon rainfall especially at downstream. Upstream gauging station showed a significant increasing trend of streamflow (1.6 m3/s/year) at annual scale, and this trend was attributed to the significant increasing trend of catchment rainfall (9.54 mm/year). It was further evident in the significant coefficient of positive correlation (ρ = 0.8) between streamflow and catchment rainfall. The decreasing trend in streamflow and post-monsoon rainfall especially towards downstream area with concurrent increasing trend of temperature indicates a drying tendency of the Gomti River basin over the study period. The results of this study may help stakeholders to design streamflow restoration strategies for sustainable water management planning of the Gomti River basin.
KeywordsStreamflow Monsoon Season Entire Basin Annual Streamflow Monthly Streamflow
We wish to thank the CWC Government of India for providing streamflow data and to the Department of Agriculture, Uttar Pradesh, for providing crop production data. We wish to acknowledge geospatial modeling and DSS laboratory in WTC, IARI, for providing the MATLAB code for performing the trend analysis reported in this study. This study was funded in part by “National Initiative on Climate Resilient Agriculture” (NICRA) project.
- Bhutiyani MR, Kale VS, Pawar NJ (2008) Changing streamflow patterns in the rivers of northwestern Himalaya: implications of global warming in the 20th century. Curr Sci 95(5):618–626Google Scholar
- Dutta VD, Srivastava RK, Yunus M, Ahmed S, Pathak VV, Rai L, Prasad N (2011) Restoration plan of Gomti River with designated best use classification of surface water quality based on river expedition, monitoring and quality assessment. Earth Sci India 4(III):80–104, http://www.earthscienceindia.info/. Accessed 25 July 2013Google Scholar
- Foster S, Choudhary NK (2009) Groundwater resource use and strategic planning needs, project task managers: Javier Zuleta & Sanjay Pahuja. Case profile collection number 23 sustainable groundwater management, lessons from practice, Global Water Partnership Associate Program, http://www.un-igrac.org/dynamics/modules/SFIL0100. Accessed 15 July 2012
- McCabe GJ, David M (2013) Temporal and spatial variability of the global water balance. Clim Change 120:375–387Google Scholar
- Jarvis A, Reuter HI, Nelson A, Guevara E (2008) Hollow filled SRTM for the globe version 4. Available from CGIAR-CSI SRTM 90m database, http://srtm.csi.cgiar.org. Accessed 20 July 2012
- Kendall MG (1975) Rank correlation methods. Griffin, LondonGoogle Scholar
- Maurya US (2013) Environmental implications of anthropogenic activity on Gomti River morphology at Lucknow, the Ganga plain, India. Int J Geol Earth Environ Sci 3(2):90–96Google Scholar
- Rai RK, Upadhyay A, Sarkar S, Upadhyay AM, Singh VP (2009) GIUH based transfer function for Gomti River basin of India. J Spat Hydrol 9:24–50Google Scholar
- Rao AR, Hamed KH, Chen HL (2003) Nonstationarities in hydrologic and environmental time series. Water Sci Technol Libr 1:4020–4027Google Scholar
- Rao AR, Azli M (2010) On the variability of trend test results. Paper presented at the International Conference on Sustainable Built Environment (ICSBE-2010), Kandy, Sri Lanka, 13-14 December 2010. http://www.civil.mrt.ac.lk/ICSBE_2010/vol_02/64.pdf. Accessed 20 July 2013