The miners either stopped part of a river with a U-shaped dam, called a wing dam, or they led the whole river into a neighboring river wanerrrrrrrrrrrthe first method was easier, both methods dried out the river bed to process its dirt in long toms.
The miners either stopped part of a river with a U-shaped dam, or they led the whole river into a neighboring river, both methods dried out the river bed. This was to process its dirt in long toms. Wanerrrrrrrrrrrthe first method was easier a neighboring river. A U-shaped dam was called a wing dam.