Location: North end of Swan River Delta: 52º 30' N; 100º 45' W
Map sheets: 1:250,000 63C SwanLake
Deltas in Swan Lake
Swan River 1 and Woody River 2 drain the land between the Porcupine Hills 3 and DuckMountain, off the image to the south. Both have deposited sediment into the west side of SwanLake4 to create deltas. That deposited by WoodyRiver and BirchRiver—too small to be visible on this high-level image—is simple in form with just one main projection 5. The delta of SwanRiver and its distributary Rat Creek 6 is more complex, resembling the classic bird’s foot type of delta 7. Within the deltaic area are a number of small lakes, the most obvious of which is PlumLake8. East of Swan Lake is PelicanLake9. The two large lakes—SwanLake and PelicanLake—are very different in colour; SwanLake, with a high suspended sediment concentration, is milky blue, whereas PelicanLake, sediment free, is dark blue. The latter receives only small tributaries from relatively flat land, whereas SwanLake receives WoodyRiver and SwanRiver whose tributaries flow from the Porcupine Hills and DuckMountain.