Abstract
Micro hydropower projects and diversion based irrigation projects are dependent on the amount of water flowing in the river of concern. Analyses of historical River Flow information are crucial to understand its pattern, frequency and predictability. Statistical analysis is the basis for a better scientific comprehension of the river flow system. Based on this information designing of such projects as well as making management plans for any future eventualities are possible. In this paper historical discharge information for a period of 19 years is collected and analyzed. Based on the water level and volume of discharge information of the river for the year 1995, various stage discharge rating curves are prepared. The best fitted curve is used for the estimation of the discharge for the remaining years where only the stage information is available. Daily discharge hydrographs for 19 years is prepared along with annual discharge computation for each of the 19 years of observation period. Preparation of flow duration curve helped to understand what is to be expected minimum from the river and what could be the most risky situation for a river project in this river and make necessary allowances for designing such project. Finally seasonal and monthly time series models are prepared so that the future discharge could be scientifically forecasted for predicting the future of such projects.
Highlights
The Tipling River is a West to East flowing stream in the Tinsukia District of Assam
It flows through the District till it confluences with the Burhi Dihing River that is flowing South to North to meet the mighty Brahmaputra
Hydrograph of the Tipling River for 19 years: Based on the linear stage discharge rating curve and its mathematical relationship, discharge values were calculated for the available stage information of the Tipling River for the period of 1994 to 2012
Summary
Statistical analysis is the basis for a better scientific comprehension of the river flow system. Based on this information designing of such projects as well as making management plans for any future eventualities are possible. Based on the water level and volume of discharge information of the river for the year 1995, various stage discharge rating curves are prepared. Introduction:The Tipling River is a West to East flowing stream in the Tinsukia District of Assam. Apart from collecting daily stage information of the river flow since 1994, the station has collected the Discharge Data for the year 1995 by measuring daily water level (stage), cross-section and average velocity with the help of float method.
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