The boat is in the river. vs The boat is on the river.

Examples:

• The boat is in the river, waiting for the tide to change.
• I saw a beautiful boat in the river yesterday.
• There are many boats in the river during the summer.
• The boat got stuck in the river due to low water levels.
• We found the missing boat in the river downstream.

Alternatives:

• The boat is on the riverbank.
• The boat is floating in the river.
• The boat is sailing on the river.
• The boat is cruising down the river.
• The boat is navigating through the river.

Examples:

• The boat is on the river, gliding smoothly along the current.
• We watched the boat on the river as it passed by.
• There is a boat on the river that offers tours to visitors.
• The boat on the river is painted in bright colors.
• She enjoys spending time on the boat on the river.

Alternatives:

• The boat is in the river.
• The boat is cruising on the river.
• The boat is navigating the river.
• The boat is floating downstream.
• The boat is sailing along the river.