Apavatn is located near Laugarvatn in Árnessýsla, about 80 km from Reykjavík. The lake is about 14 km² in size and lies at about 59 m above sea level. This is a rather shallow lake, or with an average depth of 1.5 m, the deepest it has been measured at 2.5 m. Fish can travel between Apavatn and Laugarvatn through Hólaá. There is a lot of fish in Apavatn, mostly brown trout but also Arctic char. The brown trout is usually around 1-3 pounds, but some larger fish have been caught in recent years, up to five pounds. It is best fished at estuaries in Apavatn, both at the estuary of Hólaá and other streams. The fish seem to bite well and, as usual, fishing is best done in the twilight in the morning and in the evening.