U.S. Mexico Border Fence Location The Border Fence Project plan is to build a 700 mile fence all along the U.S.-Mexico border. This fence will cover one-third of the entire 2,100 mile border, and it borders California, Arizona, New Mexico, and Texas.  The very large Rio Grande River will be used as part of the fencing, so there is a big portion that does not need to be built.  The 700 mile fence will be built with dual layers of walls equipped with security cameras.  The border fencing just happens to run through many conservation areas and other refuge lands, which has hurt, and will continue to hurt, the nearby wildlife. These issues and others have led to big problems with the residents who live close to the border fence construction area. Both in the U.S. and Mexico, residents fear having a fence so close to their towns could create various problems, many of which will not be known until after the border fence is finished.  Learn More Texan mayors want to stop border fence San Pedro Riparian NCA Del Rio mayor urges "virtual fence" Border Fence will limit water access in El Paso Other Useful Sites Boder Fence Home Biodiversity Public Lands and Wilderness Environmental Justice