Carp Lake River

{{Short description|River in Michigan, United States}}

{{Use American English|date=February 2025}}

{{Infobox river

| name = Carp Lake River

| image =

| image_size =

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| source1_location = Emmet County, Michigan

| source1_coordinates= {{coord|45.6858|-84.7797|region:US-MI}}

| source1_coord_ref ={{cite gnis|622754|Carp Lake River}}

| mouth_location = Lake Michigan, Michigan

| mouth_coordinates = {{coord|45.7497|-84.8292|region:US-MI|display=inline,title}}

| subdivision_type1 = Country

| subdivision_name1 = United States

| length_mi = 10.5

| source1_elevation =

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| discharge1_avg =

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}}

The Carp Lake River is a {{convert|10.5|mi|km|adj=mid|-long}}{{cite web |author=U.S. Geological Survey |type=National Hydrography Dataset high-resolution flowline data |url=http://viewer.nationalmap.gov/viewer/ |title=The National Map |access-date=November 21, 2011 |url-status=dead |archiveurl=https://web.archive.org/web/20120329155652/http://viewer.nationalmap.gov/viewer/ |archivedate=March 29, 2012 }} river in Emmet County, Michigan, in the United States. It is a tributary of Lake Michigan, joining it {{convert|5|mi|0}} west of the Straits of Mackinac. It is fed by Lake Paradise.

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.{{Cite web |last= Tansey |first= Carrie |date= August 2008 |title= Hungerford's crawling water beetle (Brychius hungerfordi) Draft Recovery Plan |publisher= US Fish and Wildlife Service, Region 3 |url= http://www.fws.gov/midwest/endangered/insects/hcwb_recpln_fnl.pdf |access-date= February 25, 2011}}