The anthropic changes that occurred in Danube Delta between 1950 and 1990 due to the need to exploit natural resources and increased navigation had a negative effect on the hydrological regime. The new water channels led to modifications of the water flow.
The efforts to protect this area are correlated with international politics and strategies, like the International Ramsar Convention or the European Strategy for Danube Region. Due to the difficult ground access, the maintenance of a dense network of ground-based water level gauges equally spread on the affected areas was not viable. The employment of InSAR techniques represented a new approach leading to the extension and refinement of the complex hydraulic model of a Delta on a large area.
A service was developed by TERRASIGNA to analyze the dynamics and the evolution of the land in the Danube Delta, as far back as 1992. The service is extremely relevant to the wildlife in the Delta, considering the special geographical features of the area, with numerous lakes and channels with important populations of protected animal and plant species.