Fire chief Oscar Cotton says they are starting to get people back to their homes.
He says every road is passable and the reserve's housing department was now pumping out a lot of basements with about 200 homes affected by the flood.
Cotton says there are still about 50 people who are being put up in hotels with the reception centre offering meals and accepting donations in Standoff.
Most of the damage was to property located along the Belly River which is not controlled by a dam.
Officials say if they get all the water out quick enough, most homes should survive the flood, but the future of three remains up in the air.
The Alberta government says as many as 500 homes experienced some sort of flooding in southern Alberta because of heavy rains last week in the province's southwest.