[Studies on the quality of water of the right side tributaries of the Po River; Trebbia and Nure, in 1971-1973].
In the period 1971-73 samplings were taken out monthly at the mouths of the two right side tributaries of the river Po, Trebbia and Nure. The aim of the research was to value the water quality, the polluted load conveyed to the river Po and to compare the real load with the one estimated on the basis of inhabitants and the basin area. Both the water courses are torrent-like rivers with highflow values in the winter and low flow values in the summer (July and August). There are no important industries in the basins studied and the high polluted effluents, mainly domestic and agricultural discharges, are placed in the plain tracts of the rivers at few kilometers from the mouths. As far as the water quality of both rivers is concerned, most of the chemical parameters maintain suitable levels for fish life and drinking purposes; on the contrary the microniological indexes exceed the limits for bathing fixed by the Italian Ministry of Health by 100 E.coli 100/ml. and by 1000 total coliforms 100/ml. in about 90 and 70-80% of samplings. The comparison between real and calculated loads has shown a good agreement for BOD and chloride in Trebbia and for BOD and phosphates in Nure.
D007558:Italy; D012621:Seasons; D014871:Water Microbiology; D014876:Water Pollution / Q000032:analysis*; D014881:Water Supply
Indagine sulla qualità declle acque degli affluenti di destra del Po, Trebbia e Nure nel periodo 1971-73