The Embarras River is a 195-mile-long tributary of the Wabash River in southeastern Illinois in the United States. The waters of the Embarras reach the Gulf of Mexico via the Wabash, Ohio, and Mississippi Rivers. The river drains a watershed around 1,566,450 acres in an agricultural region. It arises near Champaign-Urbana and flows south to near Vin…The Embarras River is a 195-mile-long tributary of the Wabash River in southeastern Illinois in the United States. The waters of the Embarras reach the Gulf of Mexico via the Wabash, Ohio, and Mississippi Rivers. The river drains a watershed around 1,566,450 acres in an agricultural region. It arises near Champaign-Urbana and flows south to near Vincennes, Indiana. The name comes from French explorers, who used the French word, embarras, for river navigation obstacles, blockages, and difficulties relating to logjams.