“Rio Grande, How Clean is our River” Presented by: Kavita Idnani Luna and Rick Ferdin. Facts. Rio Grande River is one of the largest rivers in the United States. Flows through Texas and Mexico. Starts from San Juan County, Colorado and flows out into the Gulf of Mexico.
(2 in the U.S) Pecos River and Devil River
(3 in Mexico) Rio Conchos, Rio Salado, and
Rio San Juan