Kathmandu. According to the bulletin issued by the Flood Forecasting Department on Wednesday morning, water levels in the country's main and subsidiary rivers are predicted to rise significantly for the next three days.As per the measurement this morning, the flow in Koshi, Narayani, Bagmati, Karnali, Mahakali and their subsidiary rivers, as well as in the Kankai, Kamala, Babai, East Rapti and West Rapti rivers, is below the alert level.According to the three-day flood forecast, water levels will rise significantly in Saptakoshi (Chatara), Tamor (Triveni), Arun (Simle), Dudhkoshi (Rabhubazar), Tamakoshi (Busti) and Sun Koshi (Hampchuar) in the Koshi basin. Similarly, in...