:Category:Trinity River (Texas)
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- Trinity River — the longest river flowing entirely within Texas, its course is from North Texas to its river mouth at the Gulf of Mexico.
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Category:Drainage basins of the Gulf of Mexico
Category:Rivers of Chambers County, Texas
Category:Rivers of Archer County, Texas
Category:Rivers of Wise County, Texas
Category:Rivers of Jack County, Texas
Category:Rivers of Tarrant County, Texas
Category:Rivers of Dallas County, Texas
Category:Rivers of Madison County, Texas