Hydrological characteristics of Sri Lanka. Urgent! ! !

If we want to analyze hydrological characteristics, we must first know its main influencing factors. 1. Climate 2. With the periodic change of climate, the recharge status, water level and flow rate of rivers change accordingly within one year. According to hydrological characteristics, it can be divided into flood season, normal season, dry season or freezing period. Sri Lanka lies between north latitude 10 and the tropic of cancer. Controlled by winter and summer monsoon alternately, it belongs to tropical monsoon climate, with high temperature all year round, divided into dry season and rainy season. Rivers in Sri Lanka are mainly replenished by rainwater, and the runoff changes with the seasonal variation of precipitation. To sum up, it can be seen that the hydrological characteristics are large interannual changes, less precipitation in dry season, difficulties in river water supply, reduced flow, decreased water level, and more precipitation in wet season, which is easy to induce floods.