Abstract
The assessment of the quality of surface water is a complex issue that entails the comprehensive analysis of several parameters that are altered by natural or man-made causes. In this sense, the Grey Clustering method, which is based on Grey Systems theory, and Shannon Entropy, based on the artificial intelligence approach, provide an alternative to evaluate water quality in an integral way considering the uncertainty within the analysis. In the present study, the water quality on the upper watershed of Huallaga river was evaluated taking into account the monitoring results of twenty-one points carried out by the National Water Authority (ANA) analyzing nine parameters of the Prati index. The results showed that all the monitoring points of the Huallaga river were classified as not contaminated, which means that the discharges, generated by economic activities, are carried out through of treatment plants meeting the quality parameters. Finally, the results obtained can be of great help to the ANA and the regional and local authorities of Peru in making decisions to improve the management of the Huallaga river watershed.
Highlights
The Huallaga river watershed is one of the main watersheds of Peru and with a great potential of water resources, this due to the existence of a large number of lagoons, rivers, streams and springs, an important source of resources natural resources, food and work for the native communities and populated centers of the area being the main economic activities: agricultural, industrial, energy, mining and fishing for direct human consumption [1]
This happens because point P1 is on the beginning of the Huallaga river and point P8 is in a lower zone, it means that the quality of Water decreases along the river depending on the activities that take place, such as mining and hydroelectric plants [1]
The results obtained in this study can be useful to the regional and local authorities of Peru, as well as to the National Water Authority to make better decisions regarding the management of this important watershed
Summary
The Huallaga river watershed is one of the main watersheds of Peru and with a great potential of water resources, this due to the existence of a large number of lagoons, rivers, streams and springs, an important source of resources natural resources, food and work for the native communities and populated centers of the area being the main economic activities: agricultural, industrial, energy, mining and fishing for direct human consumption [1]. The benefits provided by the watershed have been diminished, due to its waters have been polluted by domestic wastewater, wastewater municipal, solid waste, as well as mining environmental liabilities, being a risk to public health [2]. This watershed, located on the Atlantic watershed, is one of the largest tributaries of the Marañon River and It is made up of the Lower Huallaga Inter-watershed, Paranapura, Middle Lower Huallaga Inter-watershed, Mayo Watershed, Middle Huallaga Inter-watershed, Biabo Watershed, Middle Upper Huallaga Inter-watershed, Huyabamba Watershed and Upper Inter-watershed Huallaga [1]. Shannon [6], this method was used to calculate the weights objectives of the assessment criteria within the CTWF method
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