The Arroyo Colorado is an ancient distributary channel of the Rio Grande. It extends 90 miles from Mission to the Laguna Madre. Trout may congregate in the Arroyo Colorado during the winter.
A history of fishing reports for the Arroyo Colorado. Maybe you can find a seasonal pattern or a bait or technique that has worked in the past.
Sep-15-04 . Trout are good on live bait in the Intracoastal to the mouth of the Arroyo Colorado . Flounder are good in the same area on live bait.