The Jochenstein is a small rock island on German territory near the German-Austrian border and rises about nine meters high out of the Danube. The rock is located in the upper reaches of the Danube at river kilometer 2202.72 and 78 meters from the left (northern) and 187 meters from the right river bank. It is part of the pile, a chain of quartz rocks in the Bavarian Forest, which runs along the Danube rim break through Lower Bavaria, and like the left (northern) bank of the Danube and the river to the left of the valley path, part of the Gottsdorf district of the Untergriesbach community.
The Jochenstein gives the place Jochenstein, a district (village) of the municipality Untergriesbach, the power plant Jochenstein, a floating pontoon crane and the ruins Altjochenstein and Neujochenstein the name. In addition, it forms the central border point of the two planning areas of the Danube up to and below Jochenstein in the hydrography of Austria. To the right or south of it on the opposite bank of the Danube is the Upper Austrian municipality of Engelhartszell with its cadastral municipality of Stadl.