The lake is fed at its northern end by both the braided Godley River and Macauley river, which have their sources in the Southern Alps to the north. The snow melt from the Southern Alps is tinged with a light turquoise colour from the glacial silt. This gives Lake Tekapo its distinctive colour. To the east of Lake Tekapo lies the Two Thumb range with Mount Toby (2222m); Braun Elwert Peak (2086m); Dobson Peak (2095m) and Mount Maude (1797m) amongst the mountains over looking Lake Tekapo. On the western side of Lake Tekapo. Mount John (1031m) is closest to the town with Lake Alexandrina further north and Mistake Peak (1931m) sitting towards the head of the lake. Cowans Hill (783m) lies at the southern end of Lake Tekapo behind the township and next to the Tekapo river.