mad river

American A river in northwestern California, United States, that flows approximately 113 miles northwestward from the Coast Ranges into the Pacific Ocean near McKinleyville.

American A tributary of the Great Miami River in west-central Ohio, United States, flowing approximately 66 miles southwestward to join the Great Miami River in Dayton.

American A river in central Vermont, United States, flowing northward through a scenic valley in the Green Mountains before joining the Winooski River.