The Eisbach (German for "ice brook") is a small man-made river in Munich. It flows through the park Englischer Garten and is a tributary of the Isar River. Just past a bridge near the Haus der Kunst art museum, the river forms a standing wave about 1 metre high, which is a popular river surfing spot. The water is cold and shallow (sometimes only 40 cm deep), making it suitable only for experienced surfers. Swimming in the Eisbach is not allowed, but the rule is not enforced.