Coordinates: 52°12′N 9°18′E / 52.200°N 9.300°E
The Deister-Süntel valley (German: Deister-Sünteltal) lies in the northeast Weser Uplands in the north German state of Lower Saxony between the ridges of the Bückeberg, Süntel and Deister in the districts of Schaumburg and Hameln-Pyrmont.
It is not obvious from a glance at a map that the Deister-Süntel valley extends northwards over the Süntel region to the Rodenberg Bowl (Rodenberger Mulde) east of the Bückeberg and the Aue valley, and southwards as far as the Hachmühle Basin (Hachmühle Becken), with the Kleiner Deister to the east, a distance of some 25 km.
The rivers Hamel (which drains south into the Weser) and Rodenberger Aue (running north into the Leine), both rise on the watershed of the Deister-Süntel valley north of Bad Münder. They are fed by some 20 streams from the Deister and Süntel.