Earth:Arm (geography)

Short description: A narrow extension of water extending out from a much larger body of water

Shuswap Lake in British Columbia with its three arms

In geography, an arm is a narrow extension, inlet, or smaller reach, of water flowing out from a much larger body of water, such as an ocean, a sea, or a lake. Although different geographically, a sound or bay may also be called an arm.

Both the tributary and distributary of a river are sometimes called an "arm". By extension, a canal arm is a subsidiary branch of a canal or inland waterway.

Arm of water scarcit

• River
• Channel
• Indian Arm
• Alice Arm