River Sléttuá is the main fishing river in Reyðarfjörður even though there are fish in other rivers, especially in Norðurá. Sléttuá has many source rivers that flow from the highlands to the fjord. River Norðurá comes from Grænavatn and can often be full of char, as there are good spawning grounds. As in other rivers in this area, sea-run char begin to migrate in mid-July. The largest fish come first and later in summer the char have spread all over the rivers and the small fish have also arrived. Salmon are rare and mostly caught in the upper part of the river. As far as Sléttuá is concerned, most of the fishing takes place in the land of farm Slétta. Above Melshorn, where the rivers from Skógdalur and Þórsdalur run into Sléttuá, there is often good fishing. About 500 fish can easily be caught in the river in good years. As with the neighboring river in Eskifjörður, gravel processing has spoiled the fishing, but not as much.