Hraunsfjarðarvatn is about 2.5 km² in size and 84 m at its deepest. It is at about 207 m above sea level. River Vatná flows from the lake to Baulárvallavatn. The new “Waterway” in Snæfellsnes means that it is possible to drive almost all the way up to the lake by road, from the western end of Baulárvallavatn, but the last part must be on foot (15 min.). This trail is only accessible to four-wheel drive cars. Hraunsfjarðarvatn only has brown trout, which are often large. The average weight of fish is 2-3 pounds, but it is common for larger fish, 5-6 pounds, to be caught there, especially during daylight hours. Fish can lie deep and then it is necessary for the bait to sink. Spinners and worms generally give excellent fishing. In the twilight, brown trout travel to areas closer to the bank and then it is good to use a fly.