The incident took place in the afternoon at Bangpani village in the district following an intermittent rain since this morning in the area, the authorities said.
Victims, identified as Narayan Singh (55) and Prahlad Singh (35), were the residents of the Bangpani village.
Chief Minister Harish Rawat expressed grief over the incident and announced an ex gratia of Rs 1 lakh each to the next of kin of the deceased.
Rawat also directed the District Magistrate to ensure all possible help to the bereaved families.