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Eagle Pass presents $37 million Aoyo overhaul and a slate of drainage projects to reduce flooding
Summary
City engineers and public works presented a regional drainage strategy including an approximately $37 million overhaul of the Aoyo system, regional detention ponds, multiple subdivision drainage fixes and a proposed regional drainage master plan; staff emphasized grant pursuit and county coordination.
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City engineers and public works staff laid out a multi-project approach to address chronic drainage and flooding vulnerabilities across Eagle Pass, combining small-scale conveyance fixes with large regional investments.
Public Works Director Daniel described an Aoyo system overhaul priced at roughly $37 million to address an 8.1-mile conveyance network that moves much of the city’s stormwater toward the Rio Grande. "This Aoyo project ... sounds a little bit scary, but we got to keep in mind that this AOYO the entire system is about 8.1 miles and it feeds all of the drainage from inside of town," he said, adding that the work would range from repairs to potential replacement and could incorporate green-space design in some segments.
City Engineer Mr. Sto presented a list of targeted projects with planning and cost notes: Foxboro drainage improvements (detention ponds and channel conveyance, ~ $750,000), Ranchos Condido channel lining (~ $1 million), Roosevelt Street underground conveyance to reduce hazardous surface flooding (~ $1.5 million estimated), Treasure Hills improvements (shovel-ready, ~ $1.25 million), a regional detention pond near Highway 277 (serving a large watershed), Kaya de los Santos channel work (~ $2 million), and a pipe-relining approach for a failing Louis Street-to-Aoyo pipe (lining option reduced estimate from ~$600,000 to ~$200,000 for remaining work).
Engineers emphasized interjurisdictional coordination: several channels discharge to county-managed downstream infrastructure, so city work must be paired with county improvements. Staff said many items are prime candidates for state and federal grants (Texas Water Development Board, FEMA and related programs), and they proposed updating the city’s drainage master plan to a regional master plan (estimated ~$500,000) that would formalize coordination with Maverick County.
Next steps: staff will pursue grant opportunities, refine engineering costs and timelines, and present ranked CIP recommendations to Planning & Zoning and City Council; several projects are at design- or shovel-ready stages, while the Aoyo overhaul is in earlier scoping.

