Spring is well underway in Saskatchewan, but one of the province's busiest ferries still hasn't been able to open. The Riverhurst Ferry, located northwest of Moose Jaw, typically transports about 30,000 vehicles annually over the South Saskatchewan River, according to the Ministry of Highways, which operates the vessel. But water levels are too low for it to begin operations. Levels in Lake Diefenbaker are about a metre-and-a-half below normal for this time of year, according to a spokesperson for the Ministry of Highways. Diefenbaker is a human-made lake, located north of the Riverhurst Ferry and fed by the South Saskatchewan River.