The investigation has long been in need of a public, but the Aragonese associations of Río Aragón and Esa, and Subai Erakuntza and Urbizi of Navarra have denounced that nobody knows anything about the report. In 2019, the Government of Navarra commissioned the company Geodet, who questioned the stability of the lands surrounding the reservoir.

In any case, as in other previous studies, several experts pointed out that Geoconsultor's was rather ambiguous. Precisely to avoid this, the Transsiszo Ministry commissioned the College of Engineers in 2018, with an order of two years. According to the parties, the delivery of the work was postponed until the year 2021.

Given the lack of knowledge of the work, in February 2020 Finance Deputy Carles Mulet asked the Ministry of Transition where the study was, who replied that he had already handed over to the Government of Navarra and the Ebro Hydrographic Confederation CHE. But the work did not appear and last April, EH Bildu’s parliamentarian, Adolfo Araiz, asked the Foral Government about the report, and the government spokesman, Javier Ramírez, told him that the Government of Navarra did not receive the report. "Or one or the other lies," the four associations that have denounced the situation say. In any case, it does not seem so difficult to retrieve the report, because it is to be assumed that it will be original in the ministry and in the worst case it will have a copy of the College of Engineers.

In 2001, works were awarded to expand the Yesa reservoir, with an end order for the year 2005. With a budget of EUR 113 million, the budget has increased fourfold, as reported by the above-mentioned associations. Now they have to end the expansion of the reservoir by 2027. The right side of the reservoir is the one that most doubts, but the works remain uncertain whether what is still being done is entirely safe for the inhabitants living below the reservoir.