Near Oak Point, Man., rancher Tom Johnson waters his cattle using makeshift troughs made out of old tractor tires. "They probably just drank these dry this morning," he said. The dugouts his 120 head of cattle usually get water from are nearly dry. His cattle also have access to Lake Manitoba, but its level is so low, the water is too far away. So twice a day — morning and night — he hauls water from two wells.