They are measures that describe the states and major environmental dynamics qualitatively or quantitatively of an environmental phenomenon and its social and economic relationships, of manner selected, processed and contextualized, reflecting the trends and developments thereof, contributing to sustainable development country.

Through National System of Environmental Indicators SNIA (for its acronym in Spanish), indicators are presented as efficient and systemic tools for the evaluation and validation of the progress goals set in the environmental field, facilitating decision-making for to formulate of Environmental Public Policy.