Q: Passage: The river originates at the confluence of the Bow and Oldman Rivers near Grassy Lake, Alberta. The waters of these two rivers, in turn, originate from glaciers in the Rocky Mountains near the British Columbia and Montana border. The Red Deer River is a major tributary of the South Saskatchewan merging 16 kilometres (10 mi) east of the Alberta-Saskatchewan border. The Lake Diefenbaker reservoir was created with the construction of the Gardiner and Qu'Appelle River dams in Saskatchewan. Water from the South Saskatchewan flowing through the dams provides approximately 19 percent of the hydro-electricity generated by SaskPower.

Question: Based on this passage, where does the bow river meet the south saskatchewan? Let's give stream of consciousness first:
To answer the above question, the relevant sentence is: The river originates at the confluence of the Bow and Oldman Rivers near Grassy Lake, Alberta. Therefore, the final answer is at the confluence of the Bow and Oldman Rivers near Grassy Lake , Alberta.