Crean Lake is a large, remote backcountry lake located entirely within Prince Albert National Park (PANP) in Saskatchewan, Canada. Sitting within the Churchill River drainage basin, the lake is fed primarily by Crean Channel flowing in from Hanging Heart Lakes, and its outflow is Crean River, a tributary of the MacLennan River. There are no roads leading directly to the lake — access is exclusively by watercraft, hiking, or cross-country ski trails, making it one of the more wilderness-oriented fishing destinations in the province. The lake stratifies thermally during summer, with median epilimnion temperatures around 20°C at 5 metres depth and cooler hypolimnetic temperatures of approximately 10°C at 20 metres. Hypolimnetic oxygen concentration at 20 metres measures approximately 6.0 mg/L. Shoreline variation is relatively limited, occurring mostly along about 5 kilometres of the southwest shore, with little littoral zone development along most of the lake's perimeter.