Rakhi Gopal R and Kamble A., 2017. Marcoscale Landslide Susceptibility Mapping in parts of toposheets nos 58C/12, C/16, G/4 and G/8, Kollam and Pathanamthitta districts, Kerala. Unpub. GSI Report of FS 2016-17.
Upslope: Hills with plantation, Downslope: valley
Kottarathara Debris Flow
Kottarathara village
1). Diversion of drainage at the top of the slope. 2).  Retaining wall may be constucted across the drainage channel.
1). Reduction of strength on saturation of slope material due to heavy rain. 2). Planner failure