The Sabine River runs through Gregg County

The Sabine River is the main natural waterway in Gregg County. It runs through the county from northwest to southeast. Elevation across the county ranges from about 230 to 524 feet, with lower areas near the river and its tributaries more prone to flooding after heavy rains.

The river supports fish and wildlife in the Piney Woods ecosystem. It also marks part of the boundary between Texas and Louisiana farther downstream. If you are buying land near the river or its tributaries, check FEMA flood maps (msc.fema.gov) to understand your flood risk. The TWDB has data on river flows and water quality at twdb.texas.gov.