The International Joint Commission, through the Great Lakes Water Quality Board, established the International Reference Group on Great Lakes Pollution from Land Use Activities (PLUARG) to study and report the effects of land uses on water quality. Task C of PLUARG’s study includes intense investigations of six major watersheds in Canada and the United States which are representative of the full range of urban and rural land uses found in the Great Lakes Basin
"Great Lakes Focus on Water Quality: vol.1 iss.2,"
Focus on International Joint Commission Activities: Vol. 1
, Article 1.
Available at: http://scholar.uwindsor.ca/ijcfocus/vol1/iss2/1