Region 10 Lower Colorado-Lavaca Flood Planning Region
As the lower Colorado River emerges from O.H. Ivie Reservoir, it crosses the High Plains and Cross Timbers ecoregions on its way to the Edwards Plateau. The San Saba, Llano, Pedernales Rivers and their many tributaries all feed the lower Colorado as it passes through the Highland Lakes of central Texas. The lower Colorado makes its final dam crossing at the end of Lady Bird Lake in Austin on its way to Matagorda Bay. From its headwaters in Gonzales County, the Lavaca River flows to Lavaca Bay, which drains to the Gulf of Mexico. There are 20 major lakes and reservoirs in the Lower Colorado-Lavaca region, and no other river system crosses as many ecoregions along its course.
For a detailed map of Region 10, please visit the Texas Natural Resources Information System (TNRIS) Flood Planning Regions Map Collection.
Population Estimate (2019): 1,877,786
Approximate Area: 24,380 square miles
Approximate Stream Miles: 20,493
Approximate NFIP Claims (1975-2019): $354,032,694
*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):
*indicates this city is partially within this RFPG and is also represented by at least one other RFPG
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.