Great Lakes are estimated at 900 trillion. The influx of parasitic lamprey populations after the development of the Erie Canal and the much later Welland Canal led to the two federal governments of the US and Canada working on joint proposals to control it. By the mid-1950s, the lake trout populations of Lakes Michigan and Huron were reduced, with the lamprey deemed largely to blame. This led to the launch of the bi-national Great Lakes Fishery Commission. "The Great Lakes: An Environmental Atlas and Resource Book" (1972) noted: "Only pockets remain of the once large commercial fishery." But, water quality improvements realized
Liverpool Canal Link Liverpool Canal Link The Liverpool Canal Link is an English waterway link that connects the Leeds and Liverpool Canal, at the Liverpool Pier Head, to the city's South Docks. It cost £22m and was opened in March 2009. The new link adds of navigable waterway to the canal system. It was intended that the Leeds and Liverpool Canal would be linked to the docks in Liverpool. It was only in 1846, 30 years after the canal's completion, that the canal was directly linked to the docks via the Stanley Dock Branch. Georges Dock was filled in at the beginning of