The Rio Grande-Rio Bravo continues to rank as one of the world's 10 Most Endangered Rivers, according to the World Wildlife Fund. Limited water supply is the No. 1 reason, followed by pollution. Below are some of the key reasons for its endangered status.

• Dams, including weir dams
• Agriculture and inefficient irrigation (Nearly 80 percent of Rio Grande water is used for agriculture in the U.S. and Mexico)

• Raw sewage
• Industrial waste
• Trash

• Dams
• Increasing population along the border
• Hydraulic Fracturing (fracking)

• Giant cane – Carrizo
• Salt Cedar
• Guinea Grass
• Asiatic clam (link to some of our native species)