Assiniboine River – Portage Diversion Flows on the Assiniboine River at the Portage Diversion crested at 3:15 a.m. on July 15 at a flow of 51,480 cubic feet per second (cfs), slightly lower than the earlier summer crest. Flows are expected to decline slowly. This morning, flows on the Assiniboine River into the Portage Reservoir
