Bhaktapur flooding

On Friday, it was raining like a monsoon while I was on the way to Kathmandu. When I reach near Suryabinak bus stop, I saw flooding in the small stream. Usually the streams were almost dry and many people even don’t know that there are streams. The water was flooding nearby paddy fields and restaurants. It was unexpected event for the locals so many people were watching the scene. I was expecting similar rain and flooding in all streams of Bhaktapur to call ‘Bhaktapur flooding’ but when I reach next bus stop, Sallaghari, there was no sign of such flood nor rain. After Thimi area, there were even no rain drops. The road was dry. This type of partial rain is due to environmental change?