Kavre, September 25
The water level in the Roshi River has crossed the danger level, with the river rising to 4.51 metres against the danger threshold of 4.5 metres.
The water level was stable at the time of reporting. However, the Flood Forecasting Division sounded a warning siren after the river crossed the danger level.
Flooding has also been reported in the Trishuli River in Nuwakot and the Hanumante River in Bhaktapur. According to the Flood Forecasting Division, water levels in both rivers have reached the warning threshold.
The division has forecast rising water levels in several major rivers and river basins across the country over the next five days, with some rivers likely to cross their alert levels.
Hydrologist engineer Saraswati Bista of the division urged people to remain highly alert, particularly over the next 24 to 48 hours, as sudden rises in water levels are possible in small rivers and streams in several districts.
According to Bista, measurements taken on Friday morning showed water levels in the Koshi, Narayani, Kankai and Kamala rivers and their tributaries at or above alert levels. Water levels in the West Rapti, Babai, Karnali and Mahakali rivers remained below their alert thresholds.
Rising water levels expected in Koshi basin
In the Koshi basin, water levels are expected to rise on Friday in the Saptakoshi at Chatara, Tamor at Majhitar and Triveni, Arun at Turkighat and Simle, as well as the Sunkoshi, Tamakoshi, Likhu and other tributaries.
Some locations could cross their alert levels, according to the Flood Forecasting Division.
The risk level in these areas is expected to remain moderate on Friday, while river flows are forecast to fluctuate normally from Saturday.
Special caution advised in Narayani and Kaligandaki
In the Narayani basin, water levels in the Narayani at Devghat, Trishuli at Betrawati, Budhigandaki at Arughat, Marsyangdi and Seti at Damauli are expected to reach around alert levels on Friday and Saturday.
The Narayani at Devghat is expected to remain at moderate risk through Sunday.
The risk will be high on Friday and Saturday in the Badigad at Rudrabeni and Kaligandaki at Kumalgaun. Although the risk is expected to fall to moderate on Sunday, people living along riverbanks and those travelling through these areas have been urged to exercise particular caution on Friday and Saturday.
High risk forecast for Karnali on September 27 and 28
The Karnali at Chisapani is expected to remain at normal risk on Friday, with moderate risk forecast for Saturday. The river flow could rise significantly on September 27 and 28, bringing a high risk of flooding.
The Karnali at Asarghat is expected to remain at moderate risk from Friday through Sunday, with rising river flows forecast.
The Thulibheri at Rimna is expected to pose moderate risk on Friday, while significantly higher flows are forecast for Saturday and Sunday, requiring heightened vigilance.
In the western region, the Seti at Dipayal could reach around its alert level from Friday through Sunday, with moderate risk expected.
The Mahakali at Parigaun is forecast to see a significant rise in flow on Friday, followed by moderate risk on Saturday and Sunday.
Kankai, Kamala and Bagmati also expected to rise
The Kankai at Mainachuli is forecast to face high risk on Friday. Although river flow is expected to rise significantly on Friday, it is forecast to gradually return to normal from Saturday.
The Kamala at Belsot is expected to face moderate risk on Friday, with a significant rise in flow possible. From Saturday, the flow is expected to fluctuate normally.
The Bagmati at Padhera Dobhan is forecast to face moderate risk on Friday and Saturday, with rising water levels possible.
At Khokana, the Bagmati is already above its alert level and is considered at high risk on Friday. River flow is expected to fluctuate normally from Saturday.
The East Rapti at Rajaiya is forecast to face moderate risk on Friday and Saturday.
Moderate risk and rising flows are also forecast on Friday in the Tinau at Dobhan, Butwal, Banganga, Bardaghat, West Rapti at Kusum and Babai at Chepang.
The division has advised heightened caution on the 11th and 12th, after which river flows are expected to gradually return to normal.
Sudden flooding possible in small rivers and streams
The division said many small rivers and streams across the country could experience sudden rises in water levels over the next 24 hours.
While most areas are expected to face moderate risk, some districts are at high risk of sudden flooding.
From Friday morning through Saturday morning, there is a high risk of sudden rises in small rivers and streams in districts including Mustang, Manang, Kaski, Lamjung, Gorkha, Dang, Banke, Bardiya, Surkhet, Dailekh, Kailali and Kanchanpur, according to the Department of Hydrology and Meteorology.
