The Qu'Appelle River is a river in the Canadian provinces of Saskatchewan and Manitoba that flows 430 kilometres (270 mi) east from Lake Diefenbaker in south-western Saskatchewan to join the Assiniboine River in Manitoba, just south of Lake of the Prairies, near the village of St. Lazare. It is in a region called the Prairie Pothole Region of North America, which extends throughout three Canadian provinces and five U.S. states. It is also within Palliser's Triangle and the Great Plains ecoregion.

Pasqua Lake is a lake along the course of the Qu'Appelle River in the Canadian province of Saskatchewan. Pasqua Lake was named after Chief Joseph Pasqua who formed what became the Pasqua First Nation. It is one of four lakes that make up the Fishing Lakes, which are all in the Qu'Appelle Valley. The Qu'Appelle Valley was formed about 14,000 years ago during the last ice age as meltwater from the glaciers carved out the valley. As water levels rose and fell, alluvium was left in the wake. These piles of alluvium are what created the separations between the lakes.