River Straumfjarðará is a well known salmon river and is both productive and fun to fish. The river gets its source from the mountains in the north side of Snæfellsnes, mainly from the lake Baulárvallavatn and the sources of Köldukvíslar in Kerlingarskarð. Also, many small streams and rivers fall into Straumfjarðará. In the lower part of the river, the tributaries Fáskrúð, Grímsá and Laxá in Miklaholtshreppi flow into it.
The river is best suited to fishing with single handed rods and floating lines. Still, it can be good to use short double handed- or Switch rods at some fishing pools.