Several streams rise within the Amtsberge that are tributaries of the rivers Weser and Leine. The northwestern foothills of the Amtsberge are passed by the upper reaches of the River Lenne (an eastern tributary of the Weser) flowing northwest. The southern end of the hills is passed by the middle reaches of the Spüligbach (northwestern tributary of the Ilme) heading southeast. To the east are the middle reaches of the Bewer.