Lake Vesturhópsvatn is about 10.3 km² in size and at about 19 meters above sea level. It has been measured at 28 meters maximum depth. The environment of the lake is very beautiful and Borgarvirki, 177 m high, towers over the eastern part. There are quite good fish in the lake and the main catch is Arctic char, but brown trout can also be found. The char and trout caught are up to 3-4 pounds, but most are smaller. Sea trout and salmon are occasionally caught as there is a connection with sea via Faxalækur and river Víðidalsá. There are examples of very large fish from the lake, up to 6 to 7 kg sea trout in recent years. The largest recorded fish are a 12 kg sea trout in 1988 and a 12 kg brown trout in 1993.