Quality of Surface Waters of the United States, 1968. Parts 4 and 5. St. Lawrence River Basin, and Hudson Bay and Upper Mississippi River Basins

United States Geological Survey2014-04-032014-04-0319732401-02380http://hdl.handle.net/1993/23385Courtesy of the U.S. Geological Survey. Online document at http://pubs.usgs.gov/wsp/2094/report.pdfengSurface Water QualityUSASt. Lawrence River BasinHudson BayUpper Mississippi River BasinLake Winnipeg BasinNorth DakotaRed RiverSaskatchewan River BasinSouth Saskatchewan RiverOldman RiverPembina RiverSouris RiverGoose RiverLake of the Woods BasinAssiniboine RiverQuality of Surface Waters of the United States, 1968. Parts 4 and 5. St. Lawrence River Basin, and Hudson Bay and Upper Mississippi River BasinsTechnical Report