By Megan Wilde
On a sunny November day in Big Bend Ranch State Park, the Rio Grande roils swiftly around a muddy bend into Colorado Canyon. Dragonflies bask on rocks, and a breeze ripples through giant cane on the banks. Looking at this idyllic scene, you might not think anything’s wrong with the Rio Grande. But in our region, the river isn’t really doing its job. What’s going on?