The purpose was to develop a theoretical knowledge to the scientific knowledge of the sustainable Eco-Ethnotourism activity tending to minimize the problems of environmental contamination of the study area and the preservation of the Wayuu culture, based on the empirical dynamics of the community.This study was conducted in the Integrated Management District (DMI) delta of the Ranchería-Riohacha River.The results are made up of a project management and planning tool that helps to strengthen conservation and sustainable management actions in the area.The methodology was based on the qualitative approach of [1], [2], using the ethnographic method of [3] and [4], the observation technique, the survey and the semi-structured interview, the environmental and cultural characteristics of the study area, to make a participative diagnosis, definition of the sustainability indicators of the eco-ethnotourism activity in a participative way with the inhabitants, the potential ecoethnotouristic index was established,.It was concluded that there is illegal occupation of the river bank, constructions without planning, pressure of resources, especially of mangroves; there is inter-institutional disarticulation and community, there is no continuity of the plans and programs of the public institutions in charge of the management and preservation of this ecosystem.Keyword -Delta of the Ranchería River, environmental sustainability, environmental management, ethnotourism, eco-tourism.I. INTRODUCTION Ecotourism and ethnotourism, a duality of specialized tourism that is shared and experienced in the same environment as is the case of La Guajira, which is considered a multi-ethnic and biodiverse department and is enjoyed by the eco and ethno throughout of the department in its unique ecosystems.Starting from this point of view, this study focuses on the development of eco-tourism activity in the delta of the Ranchería River, aimed at improving the environmental quality of the delta and environmental management for the conservation of the ecosystem, which apart from its landscape beauty, is the main habitat that stabilizes and protects that coastal area, contributes to the support of the quality of coastal water and is recognized as a reproduction scenario for many species with commercial importance, such as mammals, birds, reptiles and fish, [5].In addition to this, it is emphasized that being an ecosystem very affected by anthropogenic activities, [6] the lack of clarity of the interinstitutionality to articulate the environmental in the plans and projects executed in the interest of a possible impact on the conservation of this important ecosystem, with potential impacts on fishing, aquaculture and the infrastructure of coastal communities.The objective of the research was to propose sustainable eco-ethnotourism in the District of Integrated Management of the delta of the Ranchería River as an environmental management tool that helps to conserve and protect environmental and cultural aspects of the protected area and the improvement of living conditions of the local populations.For this, it was proposed to carry out a participatory diagnosis that considers the environmental and sociocultural aspects of the area.These findings were the subject of study for the proposal of eco-ethnotourism sustainability indicators in order to be used as applicable strategies in the conservation of biodiversity.The investigation is traced, as a compulsory dynamic before the study of the evidences of the case in the population of the delta of the Ranchería river, since the margin of what has been written and researched in relation to the subject is meager, the hard work that is urged in the research, studies and research conducted by the University of La Guajira, entering the population of the delta Ranchería River, collecting important data on the people, the ecosystem, problems and characteristics, no doubt, are evidences applied as a research reinforcement methodology before the literature review of publications, visits and interviews conducted on the population under study.