mapping presidio/ojinaga

After looking on a macro level at the sister cities and rivers along the border, I have now zoomed into Presidio/Ojinaga, one of the sister cities along the border in the Marfa region of West Texas. Here one can see their relationship to eachother and to the river. The Rio Grande has been the life line for "the people of the river" allowing for the spread of agriculture along the border. Ojinaga was once called "La Junta de los Rios" or Junction of the Rivers. Practically dry from excess irrigation and domestic and industrial water use, the Rio Grande gains strength again with the convergence of northern Mexico's Conchos River in Presidio/Ojinaga. This particular region is rich in ecological diversity as well as cultural diversity - The mapping of this area will begin to reveal the convergence and divergence of all of these.