The Croker River is a waterway

Waterway

A waterway is any navigable body of water. Waterways can include rivers, lakes, seas, oceans, and canals. In order for a waterway to be navigable, it must meet several criteria:...

 located above the Arctic Circle

Arctic Circle

The Arctic Circle is one of the five major circles of latitude that mark maps of the Earth. For Epoch 2011, it is the parallel of latitude that runs north of the Equator....

 on the mainland of Northern Canada

Northern Canada

Northern Canada, colloquially the North, is the vast northernmost region of Canada variously defined by geography and politics. Politically, the term refers to the three territories of Canada: Yukon, Northwest Territories, and Nunavut...

 in western Kitikmeot Region

Kitikmeot Region

Kitikmeot Region can refer to:* Kitikmeot Region, Nunavut, a region of Nunavut.* Kitikmeot Region, Northwest Territories, a region of the Northwest Territories until 1999, with similar but non-coterminal boundaries to the above....

, Nunavut

Nunavut

Nunavut is the largest and newest federal territory of Canada; it was separated officially from the Northwest Territories on April 1, 1999, via the Nunavut Act and the Nunavut Land Claims Agreement Act, though the actual boundaries had been established in 1993...

. It is the largest river between Darnley Bay

Darnley Bay

Darnley Bay is a large inlet in the Northwest Territories, Canada. It is a southern arm of the Amundsen Gulf. The bay measures long, and wide at its mouth.The Parry Peninsula is to the west and Halcro Point is to the east...

 (in Northwest Territories

Northwest Territories

The Northwest Territories is a federal territory of Canada.Located in northern Canada, the territory borders Canada's two other territories, Yukon to the west and Nunavut to the east, and three provinces: British Columbia to the southwest, and Alberta and Saskatchewan to the south...

) and Coronation Gulf

Coronation Gulf

Coronation Gulf lies between Victoria Island and mainland Nunavut in Canada. To the northwest it connects with Dolphin and Union Strait and thence the Beaufort Sea and Arctic Ocean; to the northeast it connects with Dease Strait and thence Queen Maud Gulf. To the southeast lies Bathurst...

 that flows into Amundsen Gulf

Amundsen Gulf

Amundsen Gulf is a gulf located in Canadian Northwest Territories, between Banks Island and Victoria Island and the mainland . It is approximately in length and about across where it meets the Beaufort Sea....

. The Croker averages 180 ft (54.9 m) in width.

It originates at Bluenose Lake

Bluenose Lake

Bluenose Lake is a lake in Kitikmeot Region, Nunavut, Canada. It is located north of the Arctic Circle within the large, shallow basin of the Melville Hills. It is approximately long, wide, and is situated at above sea level...

 then flows northward. It passes through a dolomite

Dolomite

Dolomite is a carbonate mineral composed of calcium magnesium carbonate CaMg2. The term is also used to describe the sedimentary carbonate rock dolostone....

 box canyon

Box canyon

Box Canyon is a Box canyon in Ouray County, Colorado, United States. It was originally founded as a mining camp and helped the city of Ouray establish itself as a permanent community. Box Canyon is home to Box Canyon Falls, a 285-foot waterfall, with quartzite walls that extend almost one hundred...

 5 mi (8 km) from the coast, before reaching a triangular shaped delta 24 km (14.9 mi) east of Clifton Point 69°13′N 118°40′W, and then entering Amundsen Gulf's Dolphin and Union Strait

Dolphin and Union Strait

Dolphin and Union Strait lies in both the Northwest Territories and Nunavut, Canada, between the mainland and Victoria Island. It links Amundsen Gulf, lying to the northwest, with Coronation Gulf, lying to the southeast...

.

Croker River is named after John Wilson Croker

John Wilson Croker

John Wilson Croker was an Irish statesman and author.He was born at Galway, the only son of John Croker, the surveyor-general of customs and excise in Ireland. He was educated at Trinity College, Dublin, where he graduated in 1800...

, Secretary to the Admiralty.

Croker River (PIN 1BG) is a former Distant Early Warning Line

Distant Early Warning Line

The Distant Early Warning Line, also known as the DEW Line or Early Warning Line, was a system of radar stations in the far northern Arctic region of Canada, with additional stations along the North Coast and Aleutian Islands of Alaska, in addition to the Faroe Islands, Greenland, and Iceland...

 and a current North Warning System

North Warning System

The North Warning System is a joint United States and Canadian radar system for the atmospheric air defense of North America. It provides surveillance of airspace from potential incursions or attacks from across North America's polar region...

site.