Simplify the following text for a Grade 9 native English-speaking person.
Original: The San Joaquin River eventually meets the Sacramento River , forming the Sacramento-San Joaquin Delta .
Simplified: The San Joaquin River meets the Sacramento River near the city of Antioch . Together they form the Sacramento-San Joaquin Delta , one of the largest estuaries in the United States , before draining into Suisun Bay .