Rifsæðarvötn are on the so-called Austursléttuheiði on Melrakkaslétta. They are two lakes at 50 m above sea level. The larger lake is 1.37 km² in area. From there, a stream flows to Skálavatn. The lakes have both brown trout and Arctic char. The lakes were for a long time overcrowded with small char, but after mink hunting began vigorously and, later, organized net fishing, the stocks recovered, and the fishing improved. Now there are decent fish in the lakes, many of 2 -3 pounds, which fish well on a rod. There is a decent trail to the north Rifsæðarvatn via the so-called Mjóvatnsós. It is about 8 km and reaches to a summer house that is 50 m from the lake.