We Build the Wall submitted “general information” last week for the project to the International Boundary and Water Commission, foreign affairs officer Sally Spener told McClatchy in an email. The U.S.-Mexico commission oversees issues that arise from boundary, water, sanitation and flood control treaties between the countries.

The general information from Fisher Industries, which is contracted for the project, included a six-page document with broad floodplain information and a one-page summary of the project.

The group is clearing the private riverfront property in Mission, Texas, to make way for the wall, KGBT reported.

“This will be the first border barrier that can be built in a flood plain and it’s built to withstand the floods and there is nothing that (has) been built like it,” Brian Kolfage, founder of We Build the Wall, told KGBT. “And I think it’s going to change the way these border barriers are built in Texas.”