Carp Lake River
 The Carp Lake River is a 10.5-mile-long (16.9 km) river in Emmet County Michigan in the United States. It is a tributary of Lake Michigan joining it 5 miles (8 km) west of the Straits of Mackinac.The Carp Lake River is one of only five locations in the world where the critically endangered Hungerford's Crawling Water Beetle (Brychius hungerfordi) has been found.