Crossing the River
Depending on the season, this could be very tricky. After heavy rains, the water level will be much higher than normal, making the river dangerous to cross. It is recommended to bring a rope in this situation, and first walking across with out your backpack to secure the rope on the other side.
In any case, be smart: try to walk upstream or downstream along the shore until you find a wider section (which means it shouldn't be as deep). Rivers can be deceivingly powerful, and often times people don't realize just how powerful until too late.