Related Clues:

• Canoeists' peril
• Drops
• Canoeist's danger
• Tippy canoe area
• See 5-Across
• Slips
• See 3-Down
• Declines
• Honeymoon destination, with 'the'
• Goes down
• Topples
• Plummets
• River feature
• Doesn't stay up
• Yosemite attraction