Collection of quantitative and qualitative data of the three main indicators and their sub-indicators: social, economic and environmental. Analysis of the current sustainability of the Vjosa River based on the remaining data and their analysis. Important during the collection of quantitative indicators was the clear identification of how values, objectives, goals and indicators are related to each other. In the case of the Vjosa River, with the wide variety of values and goals of different interest groups and decision-makers, the general task is the adequate selection of the set of indicators, which will be able to facilitate the generation of the model and the graphs related to the stability in time of the river, as well as in identifying the different correlations between the variables that affect this stability.

In order to develop a clear framework for the selection of indicators, four main groups were identified according to the broad system being addressed:

1. environmental (air, water, soil and biota);
2. economic (production and consumption);
3. social security (cultural and human) and finally;
4. institutional one.

 Further, each system was identified as having three main dimensions:

1. current state;
2. distribution between generations (options);
3. intergenerational distribution, this part is achieved by collecting respondents from 1970 to 2020.