River and Weighted Lottery Frequently Asked Questions
The River and Weighted Lottery FAQ's are available as a PDF file and can be viewed with Adobe Acrobat. PDF files retain the look and feel of the original document (including typography, page layout, and graphics).
River Video and Audio includes the River Trip Orientation Video more...
Noncommercial River Trip Regulations view the regulations more...
River Management launch calendars, management plan, river regulations more...
Did You Know?
The more recent Kaibab limestone caprock, on the rims of the Grand Canyon, formed 270 million years ago. In contrast, the oldest rocks within the Inner Gorge at the bottom of Grand Canyon date to 1.84 billion years ago. Geologists currently set the age of Earth at 4.5 billion years.