Dischma is the average of the three long, gently sloping, parallel alpine valleys stretching southeast from the Davos plateau toward the Engadin. Its north-eastern neighbour is the Flüela; its southwestern neighbour is the Sertig valley. The Dischma valley is drained by the Dischmabach. The valley floor is at an altitude of about 1500-2000 meters. The most important side valleys are the Rüedisch Tälli and Rinertälli.