of with an estimated peak instantaneous discharge of . Flood of 1915 The 1915 flood of the North Saskatchewan River was one of the most dramatic in the history of Edmonton. On 28 June, the Edmonton Bulletin reported the river had risen "10 feet in as many hours." A frantic phone call from Rocky Mountain House alerted local authorities to the flood's arrival. The Canadian Northern Railway had parked a number of train cars on the city's Low Level Bridge to protect against the "tons upon tons of debris" that had been pushed up against its piers, including a house swept away by the current. Thousands of Edmonton residents watched the flood destroy lumber mills along the city's river valley. The river peaked at a stage of , a rise of above low flow, with an estimated peak instantaneous discharge of . However, based on high water marks and 1D modelling, the actual value may have been closer to . Flood of 1986 The river peaked at a stage of with a peak instantaneous discharge of . 2013 Alberta Flooding Along with many other rivers in central and southern Alberta during late June, the North Saskatchewan saw significantly higher water levels and flow rates. The river peaked at a stage of with a peak instantaneous discharge of on June 23 in Edmonton. This is significantly higher than the Bow River's peak height at and peak discharge of on June 21, that caused widespread flooding in Calgary. However, due to the expansive North Saskatchewan River Valley and natural sanctuary/parkland that surrounds it, the City of Edmonton had only minor, isolated flooding, with virtually no major property damage as a result. Commercial navigation The North Saskatchewan River has always been a major trade route from Hudson Bay and central Canada across the Canadian Prairies to the Canadian Rockies. During the fur trade era, birch bark canoes and York boats travelled up and down the Saskatchewan delivering trade goods and amassing furs for transportation to Europe. The North Saskatchewan also witnessed a lively, although short-lived, era of steamboat shipping during the 1870s, 1880s, and 1890s. The Hudson's Bay Company (HBC) purchased a number of steamboats from companies operating on the Red River and trading at Winnipeg/Fort Garry. The HBC desired to avoid paying the labour costs of fur trade brigades, and hoped steamboat shipping would provide a suitable alternative. Several HBC steamboats navigated