It is the Columbia.
Rio Culiacan: 875 Km (544 mi), flowing into the Pacific Ocean.
The Saint Lawrence River in Canada
it is the Columbia river.
it goes to the Pacific ocean
Columbia
Columbia river
Canada's longest flowing river is Mackenzie River
The Pacific Ocean.
There are 10 rivers that flow to the Pacific Ocean. Umpqua River, Amur, Rogue River, Yachats River, Goascorán River, Columbia River, Burdekin, Burnett, Acaponeta River, and Daintree.
The River Bann (An Bhanna in Gaelic) is the longest river in Northern Ireland, flowing for a total of 129 kilometres (80 miles), from the Mountains of Mourne to the Atlantic Ocean in the north.
That would be the Lena. It is the 10th longest river in the world and has the 9th largest watershed. It flows through Siberia into the Laptev Sea, which is part of the Arctic Ocean.
The longest and fastest flowing river in Scotland is the River Spey!