Division line- meandering river builds up islands, river is diverted from one country to the other, all islands are cleaned out this is because of 1944 treaty. Big bucks invested in this island cleaning. Irrigation, low salt content on crops, get it as close as possible. Sanitation of the river, pollutants cause diseases and is useless. All want water to be useful when it gets to Mexico.
High salt is a major problem.
Burning up crops. Management meetings in Laredo every 6 months. Hydrographic technician needs to be really precise and experience is the main factor that makes them quality employees. All dams are established in certain spot for a reason, and people are diverting water to their own land. But they have no jurisdiction over the Rio Conchos, until it actually hits the Rio Grande.