The Rio Grande, downstream of where we are, is considered ecologically sound because of fresh water spring flow. But where we’re rafting, and farther upstream, water quality isn’t quite as good.

Item 1 of 3 An asylum-seeking migrant mother from Central America weeps as she carries her son through heavy rainfall after crossing the Rio Grande river into the United States from Mexico in La ...

These are the banks of the Rio Grande in Eagle Pass, Texas. On the other side is Mexico. And a group of people from Central America has just waded into the water to cross into the United States.