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. The area of the river near the Oliver Road crossing revealed four adult specimens in 1997 study and one adult in 1999, but erosion at the road seems to have harmed the habitat and no specimens were found in the last survey conducted in 2003.[3]
^U.S. Geological Survey. "The National Map" (National Hydrography Dataset high-resolution flowline data). Archived from the original on March 29, 2012. Retrieved November 21, 2011.