Resumen

The reason why this study is carried out, it is because that the Chípalo river, besides being a river that crosses the city of Ibagué and has permanent contact with its inhabitants, is a tributary that supplies community aqueducts in some neighborhoods of the city , in addition, this tributary is used to the north of Tolima to supply the agricultural sector, therefore, with a study demonstrating the contamination that the river presents, one of the most relevant problems that shows us in the study carried out by the environmental agency of the municipality of Ibague in the year 2010 is that great pollution is detected in some sectors of the tributary, thanks to this contamination of large odors detected that are not very pleasant, that with the passage of time can cause diseases to the inhabitants that surrounds the river, which is possible to act on the tributary and therefore positively affect the city, its inhabitants and people who are supplied with their water. For the described, this work of degree has as a general objective the environmental assessment of the Chípalo river basin, taking into account studies carried out in the river and the evaluation is carried out only with secondary information that frames variables related to the environment and a possible field recognition, the methodologies applied in this degree work are the product of the research carried out by the director of this degree work, who proposes the use of them in the Chípalo River. As is understandable, the application of each method requires the use of certain types of information for its proper execution, so it is necessary to have a significant amount of information from the case study, which requires a prior bibliographic review, and given the conditions and availability of resources, a recognition of the study area, this with the purpose of supplying the information required by the methods for the execution of the evaluation and from here determining which of them can environmentally evaluate the river or any of its characteristics, effectively with the information available. The methodologies assigned, prior to the execution of this project, by the director are six, two of them based on landscape and geomorphological observation methods, for which a series of data collected in the field is needed, the third evaluates the vegetation cover of the rivers through analysis of satellite images, the fourth is evaluated flows, in order to determine the self-purification capacity of river waters, I feel this methodology developed for urban canalized rivers, the methodology removed uses information of annual, monthly, means and maximum, to determine the water quality of the river, finally it was intended to make the execution of a method whose purpose is to determine the quality of the water by analyzing the populations of aquatic macroinvertebrates that inhabit the riverbed. The application of the respective methodologies yields results of visual contamination, deterioration or increase of vegetation cover, fluvial auto purification, water quality and ecological flow necessary for the subsistence of ecosystems along the riverbed, it should be emphasized that all these results require secondary information for the execution of said methodologies. With all the evaluations ready, we proceed to analyze the environmental status taking into account all the results and finally we conclude how the basin is and we recommend some actions to be taken to try to improve and mitigate the pollution in the basin. This report served as support for a case of popular action carried out by the legal office of the University of Ibagué, which is why the methodologies for visual recognition, RFV and RQI, were carried out in the company of the representatives who take the case. As a result of this work, the methodologies were automated through spreadsheets programmed in Visual Basic, which makes it possible to evaluate the other parameters through methodologies that were not possible to apply when the information they require is available.