 That's why we're acting with more immediacy because of the monsoons, because any additional water is just cause for concern. The immediate solution is to redirect some 800 feet of the river away from the waste and install underground pipes to drain water away from it and let it dry out. It started when one of the private owners of the land the mine sits on plugged a horizontal mine shaft, which moved the water to the waste. Connie Weber, Arizona News Radio. Prescott is set to host the world's oldest rodeo once again, with events kicking off next week.