PATNA, Aug. 31 -- Water resources department (WRD) engineers and the district administrations of the areas traversed by the Gandak, Kosi and other major rivers originating from Nepal kept close surveillance on Sunday in view of the fear of another flash flood in Nepal. This heightened vigil follows the devastating glacial collapse and ice-rock avalanche near the Nepal-Tibet border earlier this week, which triggered catastrophic flash floods and mudslides that sent torrents down river systems including the Bhote Koshi and Trishuli, eventually feeding into the Gandak that enters Bihar. Authorities have remained on high alert for any secondary surges or related upstream risks, which was feared earlier in the day. According to the WRD's daily flood information bulletin, the overall flood situation in the state remains under control. Most of the rivers are in spate due to rainfall in Nepal catchments and residual effects from the recent upstream events, but they are generally flowing near the danger level or have jumped past the red mark only slightly at certain points. The Gandak was flowing above the danger level at Dumariaghat in Gopalganj, recording around 62.50 metres against a danger level of 62.22 metres with a steady or slight rising trend, while levels at Chatia in East Champaran, Rewaghat in Muzaffarpur and Hajipur in Vaishali stayed below the danger mark, showing falling or steady trends. Barrage discharges at Valmikinagar continued to be carefully managed. The Kosi remained above the danger level at Baltara in Khagaria (around 34.49 to 34.52 metres against 33.85 metres) and at Kursela in Katihar (around 30.59 to 30.66 metres against 30.00 metres), though it stayed below the mark at Basua in Supaul. Higher discharges through the Birpur barrage, rising toward 1.5 lakh cusecs and more at times due to intermittent rainfall in the Kosi catchment areas of Nepal, were being closely watched for downstream impact. The Burhi Gandak crossed the danger level at Khagaria (around 37.08 to 37.12 metres against 36.58 metres), while upstream sites such as Samastipur, Rosera and Sikandarpur remained well below. Other rivers including those in the Bagmati-Adhwara group, the Kamla, the Mahananda and stretches of the Ganga were mostly flowing below or near the warning and danger levels at key gauge sites, with mixed rising, steady or falling trends. Nepal rainfall in the preceding 24 hours remained moderate to significant at several gauges. District magistrates and WRD teams have been directed to monitor the situation personally, with engineers camping at vulnerable locations. People residing in low-lying areas have been shifted to safer places where required, and all concerned departments remain on alert. Officials emphasised continuous tracking of upstream conditions in Nepal and Tibet while noting that current water levels, though elevated, have not escalated into a widespread crisis across Bihar....