Photo Courtesy: Mike Loyning
DANGEROUS: The bottom of a river is uneven, which may seem obvious, but becomes hazardous when combined with current. Just one square meter of water weighs 1000 kg or 2204 lbs.
If you do not pick up your feet you can get caught and pushed face down by the weight of the river.
These situations are extremely dangerous because rescuers only have a little time to help.
A hole is one of the most common river features that can cause peril including ledge hole, river wide hole, small hole, big hole, recirculating hole and others. Avoid area.