Network of control points of the Government of Navarre. Physical-chemical surface water quality network (rivers)

Location of the physico-chemical quality measurement points of surface water. Since 1971, the Government of Navarre has carried out a systematic control of the physico-chemical and microbiological quality of surface waters, these controls are carried out by sampling on a network of 124 fixed points in the rivers. In each sample, the temperature, pH, conductivity at 20oC and dissolved oxygen are analyzed in situ, and a sample is also taken to analyze different parameters in the laboratory.