Region 15 Lower Rio Grande Flood Planning Region

Region 15This region begins at International Amistad Reservoir in Val Verde County, which separates the Upper and Lower Rio Grande regions, and extends to the Rio Grande Valley region near the Gulf of Mexico. It contains six major lakes/reservoirs, including two that border the U.S. and Mexico.

For a detailed map of Region 15, please visit the Texas Geographic Information Office (TxGIO) Flood Planning Regions Map Collection.

Go to Region 15 Lower Rio Grande RFPG External Host Website

Population Estimate (2019): 1,776,732

Approximate Area: 12,418.81 square miles

Approximate Stream Miles: 5,300

Approximate NFIP Claims (1975-2019): $173,104,689

Counties Represented:

*indicates this county is partially within this RFPG and is also represented by at least one other RFPG

Major Cities (Population greater than 25,000):

Major Lakes & Reservoirs:

Ecoregions of Texas Represented:

Regional Flood Planning Group Meeting Minutes & Updates

Please see the RFPG Meeting Schedule webpage for information on the past and upcoming meetings.


Planning Group Sponsor Contact: Hidalgo County Drainage District No. 1, Jaime Salazar, (956) 292-7080

Planning Group Chair: David Garza, (956) 361-8209

TWDB Contact: Anita Machiavello, (512) 463-5158