Abstract

Kolong River is recognized as an immensely degraded and flow deficit river of India. Installation of the Hatimura embankment as an ad-hoc flood control measure had restricted the entry of water into the river channel from its source thus converting it into a flow deprived polluted river. Significance of this work lies in the identification of the impacts of the Hatimura embankment on the planform morphology of the river. An attempt has been made in the present study to analyze the channel planform during the past 103 years (1912 to 2015). The river was found to be highly meandering with highest sinuosity index (SI) value of 2.18 observed during 1912. River planform seems to have a weak tendency of channel straightening, supported prominently by decreasing SI value from 1912 through 2015. The average migration rate of the meandering channel of the Kolong River was estimated to be 0.11 m y⁻¹.

摘要

戈隆河被认为是印度的一条退化严重且流量不足的河流。Hatimura堤防作为临时防洪措施的安装，限制了水从其源头进入河道，从而将其转化为无流量的污染河流。这项工作的意义在于确定Hatimura路堤对河流平面形态的影响。本研究已尝试分析过去103年（1912年至2015年）的渠道规划。人们发现这条河蜿蜒曲折，在1912年观察到最高的窦性指数（SI）为2.18。河流平面形貌似乎不太容易矫正河道，这主要是由于1912年至2015年SI值下降所致。^-1。