Gönguskarðsá river is a spring creek in Skagafjörður, Iceland that flows to the ocean in the Gönguskörð estuary in Sauðárkrókur (a little inlet on the shore directly north of the town) off of the north part of Sauðárkrókur.

[2] It is swift and difficult to cross in flood conditions, and has been very deadly; nearly 20 people have drowned there.

At the middle of the pipe is a pressure-equalizing tank (water pressure tower) made from concrete, the first in the country.

In the spring of 2007, the Gönguskarðsá power station’s supply pipe caved in, taking heavy damage when mud and water flooded houses in the town.

In total, the difference between the Gönguskarðsá and Víðidalsá rivers is said to be about 27 kilometres (17 mi).